Cushion Lab Grown Diamond Price Guide: Size, Quality, and Cost

Shopping for a cushion diamond usually starts with a simple question: what should a fair price look like for the size and quality you want? A cushion Lab Grown Diamond price guide gives you a benchmark Before You Buy a loose stone or a finished ring, whether you are comparing a 1.20ct F-VS2 cushion brilliant with IGI certification or a 2.03ct G-SI1 option in a completed 14K white gold solitaire. It helps you compare carat weight, color, clarity, certification, and setting cost without guessing.

Cushion cuts have a softer outline than round brilliant or princess cut diamonds, with rounded corners and either a square ratio near 1.00 or an elongated ratio closer to 1.10 to 1.20. A well-cut cushion with strong polish and symmetry can still deliver bright white light return, and lab-grown pricing often lets buyers move from a 1.00ct H-VS2 to a 1.50ct G-VS1 without crossing the same budget ceiling.

After helping couples compare center stones for proposals, anniversaries, and wedding rings, one pattern shows up often: cushion cuts appeal to buyers who want a softer shape than a round brilliant but still want strong finger coverage. A 7.00 x 6.40 mm elongated cushion can photograph larger than many shoppers expect, especially once it is mounted in a cathedral setting with a pave band in 14K white gold or 950 platinum.

Prices can vary more than expected. Two cushion Lab Grown Diamonds with the same 2.00ct weight can sit in very different price brackets if one is an IGI-certified G-VS2 modified brilliant with a deep pavilion and the other is a GCAL-certified F-VS1 cushion brilliant with better face-up spread. The difference usually comes down to cut style, millimeter measurements, color, clarity, certification, and whether the listed price is for a loose diamond or a completed ring.

This cushion Lab Grown Diamond Price guide breaks down the factors that move pricing, shows realistic cost ranges, and points out where buyers usually get the best value. It also covers practical shopping advice based on what customers compare first: size, visible quality, certification from IGI, GIA, or GCAL, and the total cost of a setting in 14K white gold, 18K yellow gold, or 950 platinum.

Cushion Lab Grown Diamond Price Guide Basics

A cushion lab grown diamond is a laboratory-created diamond cut in a soft square or slightly rectangular shape with rounded corners, usually produced by either the CVD (Chemical Vapor Deposition) or HPHT (High Pressure High Temperature) growth method. It has the same carbon crystal structure as a mined diamond, so a 1.50ct E-VS2 lab-grown cushion and a mined 1.50ct E-VS2 cushion test the same on standard diamond testers and can be graded by IGI, GIA, or GCAL.

Why use a cushion Lab Grown Diamond Price guide before shopping? Cushion pricing is less predictable than many first-time buyers expect because the shape does not have the same strict cut-grade standard as a round brilliant. A 1.28ct F-VS2 cushion with a bright 6.70 x 6.12 mm spread can cost less than a 1.05ct D-VVS2 cushion that looks smaller face-up and carries a premium for top-paper grades.

Certification matters here too. Many lab-grown diamonds are graded by IGI, while GIA and GCAL also appear in the market, especially on higher-ticket stones and branded inventory. These reports list carat weight, exact measurements, color, clarity, polish, symmetry, and growth method, which makes it far easier to compare a 2.01ct G-VS1 IGI cushion against a 2.03ct F-VS2 GCAL cushion on more than just seller photos.

A good price guide for cushion lab diamonds becomes more useful once you know what affects the final number:

• Carat weight, such as 1.00ct versus 1.20ct or 1.90ct versus 2.00ct
• Cut style and overall make, including chunky brilliant versus modified brilliant faceting
• Color grade, from D colorless through I near-colorless
• Clarity grade, from FL and VVS down to VS2 and SI1
• Polish and symmetry, often Excellent or Very Good on IGI reports
• Certification body, including IGI, GIA, and GCAL
• Setting style and metal choice, such as a hidden halo in 14K white gold or a three-stone ring in 950 platinum

Many buyers focus on the center stone and forget the setting budget. That can throw off the whole purchase. A loose 1.50ct G-VS2 cushion at $2,400 may look attractively priced until you add a hidden halo, micro-pave band, and platinum mounting, which can push the finished ring total closer to $4,200 to $5,400 depending on accent stone weight and labor.

Why Cushion Lab Grown Diamonds Often Price Well

Lab-grown diamonds usually cost much less than comparable natural diamonds. In many online retail comparisons, the gap runs about 60% to 85% depending on shape, quality, and seller markup. A natural 1.00ct F-VS2 cushion may list around $4,800 to $7,200, while a lab-grown 1.00ct F-VS2 cushion with IGI certification often falls near $900 to $1,800.

Cushion cuts also have a value edge for some shoppers because they can look broad and substantial on the hand when the measurements are right. A well-proportioned 1.75ct cushion in the 7.30 x 6.85 mm range often gives generous finger coverage, especially in a four-prong cathedral solitaire or a slim 1.8 mm pave setting, which matters when a buyer wants presence without moving into a 2.50ct budget tier.

Many customers shopping for engagement rings care less about flawless paper grades and more about visible beauty. They want a diamond that looks bright, faces up nicely, and feels worth the price, whether that means a 1.50ct H-VS1 in 18K yellow gold or a 2.02ct G-SI1 in 14K white gold. That is where a cushion lab grown diamond price guide becomes useful.

One of the strongest advantages of shopping lab-grown is freedom to choose what looks best on the hand instead of chasing specs no one notices in daily wear. Moving from a 1.00ct D-VVS1 to a 1.35ct F-VS2 often delivers more visible impact, and the savings can cover a cathedral setting with pave band, a hidden halo, or an upgrade from 14K white gold to 950 platinum.

What Affects Cushion Lab Grown Diamond Prices?

Carat weight is usually the biggest price driver. As size increases, prices climb fast, especially around milestone weights such as 1.00ct, 1.50ct, 2.00ct, and 3.00ct. A 1.90ct G-VS2 cushion may cost $3,200 to $4,400, while a similar 2.00ct G-VS2 can push into the $3,800 to $5,200 range, even when the mounted visual difference is modest.

Color has a strong effect on price too. According to GIA, diamond color is graded from D to Z, with D at the colorless end of the scale. Cushion cuts can show warmth a bit more readily than round brilliants, especially in larger sizes, so a 2.50ct I-VS2 cushion may show more body color than a 2.50ct I-VS2 round brilliant, particularly in a 14K white gold setting with open side profile.

Clarity also changes pricing, but not always in a way that matches what your eye will notice. Many VS2 diamonds and some SI1 diamonds look eye-clean in normal viewing, especially when inclusions sit near the edge under prongs. Because of that, paying a steep premium for a VVS1 or VVS2 grade does not always improve how a 1.80ct F-VS2 cushion looks in a finished halo or solitaire ring.

Cut quality is the harder part. Cushion diamonds do not follow the same standardized cut grading system shoppers often expect in round stones, even when the report comes from IGI, GIA, or GCAL. You need to judge a mix of measurable and visual factors instead:

• Brightness and contrast across the table and crown facets
• Length-to-width ratio, such as 1.00 for square or 1.12 for elongated
• Depth and table balance, often compared around the low-60% to high-60% range
• Face-up spread in millimeters relative to carat weight
• Faceting pattern, including chunky brilliant or modified brilliant
• Polish and symmetry grades, ideally Very Good or Excellent

A poorly made cushion can look dark in the center or smaller than it should for the weight, even at a strong color and clarity combination like F-VS1. A better-made 1.50ct G-VS2 with lively facet patterning can outshine it in real viewing. That is why any cushion lab grown diamond price guide should treat cut appearance as a real pricing factor, not a side note.

The 4Cs Still Matter, but They Aren’t the Whole Story

The 4Cs remain the foundation of diamond pricing. Carat affects size, color affects how white the stone looks, clarity affects how clean it appears, and cut influences sparkle. A 1.20ct F-VS2 cushion brilliant with strong make will almost always price and perform better than a 1.20ct H-SI2 stone with weak brightness and noticeable inclusions.

Cushion shoppers should go one step further because faceting style can change the whole personality of the stone. Some cushions show broader, chunkier flashes that resemble antique-inspired brilliance, while others have a more splintered modified-brilliant look. A 1.70ct cushion brilliant and a 1.70ct modified cushion with the same G-VS1 grade can feel completely different once set in a four-prong basket.

Ratio matters too. Square cushions and elongated cushions do not always command the same pricing because buyer demand shifts by trend, especially in the 1.50ct to 2.50ct engagement ring market. Fluorescence and grading lab can also influence price, though they usually matter less than size, cut appearance, and color in this category; for example, a faint-fluorescence IGI stone may trade very differently from a no-fluorescence GCAL option.

Two cushions with the same grades on paper can feel completely different once you see them side by side. One 2.01ct G-VS2 may look crisp and lively at 7.65 x 6.95 mm, while another 2.01ct G-VS2 with deeper proportions may read smaller and flatter. That difference often will not show up in a spec sheet unless you review the measurements, video, and facet pattern carefully.

Cushion Lab Grown Diamond Price Guide by Carat Weight

A practical cushion lab grown diamond price guide should show real price ranges by size. The ranges below reflect typical loose-stone listings from online retailers for certified diamonds, most commonly with IGI reports and occasional GIA or GCAL grading. Pricing changes with inventory, brand markup, ratio preference, and overall make, so use these as shopping benchmarks rather than fixed market rules.

Estimated Loose Diamond Price Ranges

Carat Weight	Budget Tier	Mid-Range Tier	Premium Tier
1.00 ct	$700-$1,200	$1,200-$1,900	$1,900-$2,800
1.50 ct	$1,100-$1,900	$1,900-$3,000	$3,000-$4,300
2.00 ct	$1,800-$3,000	$3,000-$4,800	$4,800-$6,800
3.00 ct	$3,500-$5,500	$5,500-$8,500	$8,500-$12,000

These numbers cover loose cushion lab grown diamonds, not complete rings. Once you add a setting, the total can rise by about $700 to $1,400 for a simple 14K white gold solitaire, $1,300 to $2,400 for a cathedral setting with pave band, or $2,000 to $4,500 for a halo, hidden halo, or three-stone design in 950 platinum with accent diamonds.

Here is a simple way to read the tiers:

1. Budget tier: usually lower color grades such as H to J, more warmth, SI clarity, or make issues that need careful review on video and measurements.
2. Mid-range tier: often the sweet spot for eye-clean VS2 to SI1 clarity, near-colorless G to H color, and reliable IGI certification.
3. Premium tier: typically stronger cut appeal, better finishing, F color or higher, VS1 clarity or better, and higher-demand combinations such as square 1.50ct+ stones with lively faceting.

Most buyers start by comparing 1ct, 1.5ct, 2ct, and 3ct categories. The visual jump between them is real, but the price curve is not perfectly even. That is why this cushion lab grown diamond price guide works best when you compare size with measurements, such as 6.00 mm versus 6.80 mm or 7.20 mm versus 7.80 mm, not size with carat alone.

A 1.00ct cushion lab grown diamond can be a strong choice for shoppers who want quality and price control, with many solid IGI-certified options between $900 and $1,800 in G-VS2 to F-VS1 grades. Around 1.50ct, many buyers hit a nice balance between finger coverage and cost, especially in the $2,000 to $3,000 range. At 2.00ct, buyers tend to pay much closer attention to color, cut, and spread, while 3.00ct pricing widens because clean, lively stones in grades like F-VS2 or G-VS1 remain more limited.

At StoneBridge, the 1.50ct to 2.00ct range is where many people stop and start comparing details seriously. A 1.76ct G-VS2 in a 14K white gold hidden halo often delivers the look buyers want, while a 2.05ct F-VS1 in 950 platinum tends to appeal to shoppers who want a stronger color grade and a heavier, denser metal feel.

How Cut Style and Certification Change Price

Not all cushion cuts look alike. Some have broader, chunkier brilliance with larger virtual facets, while others show busier modified faceting with more scattered sparkle. Neither look is automatically better, but pricing can shift when demand favors elongated ratios around 1.10 or square outlines near 1.00, especially in the 1.50ct to 2.50ct range.

Videos matter here. Two diamonds can share similar grades and still look very different on screen, even if both carry IGI certificates and Excellent polish. One 1.58ct F-VS2 may appear lively and crisp with balanced contrast, while another 1.61ct F-VS2 looks sleepy or overly deep. That is the cut story in real life, and it affects what shoppers are willing to pay.

Certification gives you a baseline. An IGI report usually lists carat weight, color, clarity, measurements, growth method, polish, and symmetry, while GIA and GCAL reports are also trusted reference points for market comparison. That does not guarantee beauty, but it makes price comparisons more honest when you are evaluating a 2.03ct G-VS1 cushion or a 1.27ct E-VS2 elongated cushion across multiple sellers.

Loose Diamond vs. Finished Ring Cost

A loose diamond price is only the starting point. The final ring cost depends on the setting style, metal, accent stones, and labor, whether you choose a plain 14K yellow gold solitaire or a 950 platinum cathedral setting with micro-pave shoulders and a hidden halo.

Common cost add-ons include:

• Solitaire setting: usually the lowest-cost route, often $700 to $1,400 in 14K white gold
• Hidden halo: adds detail with a moderate price bump, often $1,100 to $2,000 depending on accent stone weight
• Halo setting: raises cost through extra melee diamonds and added labor, commonly $1,500 to $3,000+
• Pave band: adds sparkle and setting work, often increasing price by several hundred dollars over a plain shank
• Three-stone ring: increases total because of side stones and mounting complexity, often $2,000 to $4,500+ before the center stone
• Platinum instead of gold: usually a meaningful jump in price, with 950 platinum often several hundred dollars more than 14K white gold

For example, a 2.00ct cushion lab grown diamond priced at $3,500 loose may end up around $4,500 to $6,500 as a finished ring, depending on whether it is set in a 14K white gold solitaire, an 18K yellow gold cathedral pave setting, or a 950 platinum hidden halo. That is why a cushion lab grown diamond price guide should always separate center-stone cost from full ring cost.

If you are comparing styles, you can shop our lab-grown diamonds, explore engagement ring settings, or build your ring online to see how pricing changes between a four-prong basket, a cathedral setting with pave band, and a halo design in 14K white gold or platinum.

How to Get the Best Value

The best buy usually is not the cheapest listing. It is the diamond that gives you the strongest visible result for the money, such as a 1.50ct G-VS2 elongated cushion with bright faceting and solid 7.10 x 6.30 mm measurements instead of a cheaper 1.50ct J-SI2 that faces up dull or noticeably warm in 14K white gold.

Many shoppers get good value in the near-colorless range. G, H, and sometimes I color can look excellent, especially in 18K yellow gold or 14K rose gold where a touch of warmth blends naturally with the metal tone. In 14K white gold or 950 platinum, buyers often prefer D through H, though a well-cut I color can still surprise you when the faceting is bright and the setting is not overly open.

For clarity, eye-clean matters more than flawless. VS1, VS2, and selected SI1 diamonds often offer the best balance of appearance and price, especially in cushion cuts where facet structure can help mask smaller inclusions. If a 1.80ct H-VS2 looks clean face-up and the inclusions do not affect durability, there is usually little reason to stretch to VVS1.

Shopping just below milestone sizes can also save money. A 1.40ct, 1.90ct, or 2.80ct cushion may look very close to the next benchmark size but cost less, particularly when the millimeter spread is strong for the weight. That strategy comes up often when comparing IGI-certified listings in the 1.50ct to 3.00ct range.

Value Tips That Hold Up Well

• Prioritize cut appearance over ultra-high clarity grades like VVS1 if a VS2 is already eye-clean.
• Compare millimeter measurements, such as 7.25 x 6.78 mm, not just carat weight.
• Watch videos to spot dark areas, weak contrast, or a sleepy center under the table.
• Check the ratio so the outline matches your taste, whether you want a square 1.00 look or an elongated 1.12 shape.
• Stick with certified stones, most often IGI for lab-grown inventory, with GIA and GCAL also offering strong credibility.
• Read the return policy before you buy, especially on custom rings in 14K gold or platinum.

The seller matters too. A low list price loses appeal fast if the return terms are weak or the ring has no service support. Look for magnified media, a clear return window, setting warranty options, and responsive guidance, especially when you are choosing between a 1.25ct F-VS2 loose cushion and a completed ring with a cathedral setting and pave band.

Buyers comparing complete rings should also pay attention to build quality. Delicate micro-pave, hidden halos, and very thin 1.5 mm bands can look beautiful, but everyday wear usually benefits from practical structure such as a 1.8 mm to 2.0 mm shank, secure prong placement, and a stable basket. You can also browse our jewelry collection if you are comparing styles beyond classic engagement rings.

Practical Buying Notes Before You Order

Price is only one part of the decision. The ring also needs to fit well, wear well, and hold up over time, whether you are ordering a 1.30ct cushion solitaire in 14K white gold or a 2.40ct hidden halo ring in 950 platinum with melee accents.

Sizing deserves care, especially for surprise proposals or online orders. Wider bands fit tighter than thin solitaires, and finger size often changes with temperature, time of day, and travel. Before ordering, review our ring size guide to avoid resizing delays, especially for eternity-style pave bands or custom platinum mountings that can be more complex to adjust.

Lifestyle matters as much as style. If the ring will be worn every day during active routines, a lower-set solitaire or a sturdier cathedral design may be a better choice than a very delicate high-profile setting. Cushion corners are softer than princess corners, but prong protection still matters, particularly on a 2.00ct+ center stone with a tall basket.

Metal choice affects both look and cost. 14K white gold usually costs less than 950 platinum and supports a bright, crisp appearance, though it may require periodic rhodium plating to maintain a whiter finish. 18K yellow gold can make slightly warmer color grades like H or I look intentional and elegant, while 14K rose gold gives cushion cuts a softer tone many buyers like in vintage-inspired designs.

There is also an emotional side to this purchase that deserves room alongside the technical details. A ring can be smart on paper, with excellent polish, a G-VS2 center stone, and a well-made platinum setting, and still not feel right once it is on the hand. Buyers usually know quickly when a specific combination of shape, ratio, metal, and setting style feels personal.

Care and Long-Term Wear

A little routine care goes a long way, and lab-grown diamonds are maintained the same way as mined diamonds because both rank 10 on the Mohs scale. Most rings with secure settings are safe for an ultrasonic cleaner, though pieces with fragile pave, loosened prongs, or treated accent stones should be checked first by a jeweler.

• Clean the ring with mild soap, warm water, and a soft brush, especially around the basket and under-gallery where lotion collects.
• Use an ultrasonic cleaner only when the setting is secure; a sturdy solitaire in 14K white gold is usually a safer candidate than delicate micro-pave.
• Store the ring separately from other jewelry so a diamond does not scratch softer metals or gemstones.
• Remove it during heavy lifting, chlorine exposure, or harsh chemical contact that can wear down prongs or damage rhodium finish on white gold.
• Ask a jeweler to check prongs, pave seats, and the center basket every 6 to 12 months.

Insurance is worth considering once the value climbs, especially for rings in the $4,000 to $10,000 range. Your grading report from IGI, GIA, or GCAL, purchase receipt, and clear photos make that process easier. Professional inspections can also catch loose prongs, worn pave, or thinning shanks before they turn into expensive repairs.

FAQ: Cushion Lab Grown Diamond Price Guide Questions

How much should I pay for a 2 carat cushion lab grown diamond?

A 2 carat cushion lab grown diamond usually falls between about $1,800 and $6,800 as a loose stone, depending on color, clarity, faceting, and certification. Many buyers shop the $3,000 to $4,800 range because it often balances size, eye-clean clarity, and strong color, such as a 2.01ct G-VS2 or 2.03ct F-SI1 with IGI grading. If you are buying a finished ring, expect the total to rise with the setting, metal, and accent stones, often reaching $4,500 to $6,500 in 14K white gold or more in 950 platinum. A cushion lab grown diamond price guide helps you separate the center-stone budget from the full ring cost.

Why is one cushion lab grown diamond much cheaper than another with the same carat weight?

Carat weight is only one part of the price. Cut style, face-up spread, color, clarity, certification, and demand for certain length-to-width ratios all affect value. A cheaper 1.50ct cushion may have weaker brightness, more visible warmth, or a less attractive outline, even if it shares the same carat weight as a better-performing stone. Use a cushion lab grown diamond price guide to compare measurements, grading reports from IGI, GIA, or GCAL, and video performance, not just headline specs.

What color and clarity grades give the best value in a cushion lab grown diamond?

Many shoppers get the best value in G to I color and VS2 to SI1 clarity, especially when the stone is going into 18K yellow gold, 14K rose gold, or a well-designed 14K white gold setting. That range often looks bright and clean without the premium attached to D-F color or VVS clarity. The key is to confirm the diamond is eye-clean and well cut, whether that means a 1.20ct H-VS2 or a 1.75ct G-SI1. In a cushion lab grown diamond price guide, those combinations often sit in the strongest value band.

Is a cushion lab grown diamond a good choice for an engagement ring?

Yes, especially if you want a romantic shape and better size potential for the budget. Cushion cuts work well in solitaires, hidden halos, halos, and three-stone settings, with popular combinations including a 1.50ct elongated cushion in a cathedral setting with pave band or a 2.00ct square cushion in a platinum solitaire. Lab-grown pricing can also make it easier to choose a larger center stone or upgrade the setting metal from 14K white gold to 950 platinum. For many couples, that balance makes cushion cuts a strong engagement-ring option.

How do I compare cushion lab grown diamond prices online without overpaying?

Start with certified stones and match carat, exact measurements, color, clarity, and ratio side by side, such as comparing two 1.50ct options at 7.05 x 6.40 mm and 6.80 x 6.55 mm. Then review videos closely, since two diamonds with similar grades can look very different, especially in cushion cuts with modified brilliant faceting. Make sure you know whether the listed price covers a loose stone or a complete ring in 14K gold or platinum. A cushion lab grown diamond price guide works best when you compare both visible quality and final purchase terms.

Shop With a Clearer Price Benchmark

A strong cushion lab grown diamond price guide does more than list numbers. It shows how cost changes with size, visible quality, certification, cut style, and setting choice, whether you are considering a 1.00ct F-VS2 loose stone or a 2.25ct G-VS1 cushion in a cathedral pave setting. The best purchase usually is not the highest grade on paper. It is the one that gives you the best mix of beauty, confidence, and long-term wear for your budget.

If you are narrowing down options, keep the basics in view: choose a certified stone from IGI, GIA, or GCAL, compare videos and millimeter measurements, aim for eye-clean clarity such as VS2 or SI1, and look at the full ring cost before you decide. Ready to compare stones and settings side by side? shop our lab-grown diamonds, browse our jewelry collection, or contact our jewelry experts for help finding the right cushion shape, metal, and setting style for your budget.