Marquise Lab Grown Diamond Price Guide for Smart Buyers

A marquise Lab Grown Diamond Price guide should help you compare more than a price tag, especially when a 1.00ct G-VS2 marquise can sell for about $900-$1,600 while a 1.00ct D-VVS1 marquise may reach $1,700-$2,400. Cut, color, clarity, millimeter spread, length-to-width ratio, certification from IGI, GIA, or GCAL, and setting style all shape the final value.

At StoneBridge Jewelry, shoppers often notice the marquise shape first because a well-proportioned 1.50ct marquise with measurements near 12.0 x 6.0mm can look larger on the hand than many 1.50ct round brilliants near 7.4mm in diameter. I have helped hundreds of couples compare IGI-graded and GIA-graded engagement diamonds, and marquise stones often get that immediate reaction because the elongated outline creates strong finger coverage. The goal is to choose a diamond with bright light return, even tips, and controlled bow-tie contrast, not just a high carat weight on the grading report.

This marquise Lab Grown Diamond price guide breaks down typical retail ranges, value factors, and buying tips for loose stones from 0.50ct to 3.00ct. If you are comparing an IGI 1.20ct F-VS2 marquise for a 14K white gold solitaire or planning a 2.00ct G-VS1 cathedral setting with a pave band, you will know where to spend and where you can save.

Marquise Lab Grown Diamond Prices: What Shapes the Cost

A marquise lab grown diamond is priced by the same core quality factors used for other diamond shapes: carat weight, color grade, clarity grade, and cut-related measurements such as table percentage, depth percentage, polish, and symmetry. The marquise shape adds a few extra details because tip alignment, shoulder symmetry, length-to-width ratio, girdle thickness, and bow-tie visibility can make a 1.80ct G-VS2 stone look far better than a poorly proportioned 2.00ct F-VS1 stone.

Lab grown diamonds have the same physical, chemical, and optical properties as mined diamonds, according to the Gemological Institute of America, and their laboratory-grown origin should be disclosed on a GIA, IGI, or GCAL report. For many buyers, that means a budget of $2,800-$4,200 can reach a larger certified lab-grown diamond, such as a 2.00ct G-VS2 marquise, instead of a much smaller mined diamond with comparable color and clarity.

Marquise diamonds create strong face-up spread because much of the carat weight is distributed across the length of the stone. A well-cut 1.50ct marquise measuring around 12.0 x 6.0mm can look larger than a 1.50ct round brilliant measuring about 7.4mm, so buyers who want more coverage in a 14K yellow gold, 14K white gold, or 950 platinum engagement ring should compare millimeter dimensions before paying for extra carat weight.

You can compare certified loose stones in our lab-grown diamond collection, then pair a 1.25ct F-VS2 marquise, 1.75ct G-VS1 marquise, or 2.50ct H-VS2 marquise with a 14K white gold, 18K yellow gold, or 950 platinum setting through our ring builder.

Why Marquise Lab Grown Diamonds Look Larger

The marquise cut has an elongated outline with pointed ends, typically with 56 to 58 facets depending on the cutter and final facet arrangement. That long shape helps the stone cover more finger area, and a 1.00ct marquise measuring around 10.0 x 5.0mm can appear more prominent than a 1.00ct round brilliant near 6.5mm in diameter.

That extra spread is one reason a marquise lab grown diamond price guide is useful when comparing a 1.40ct G-VS2 stone priced around $1,400-$2,500 against a 1.70ct H-VS1 stone priced around $2,000-$3,400. You may not need the highest carat weight to get the visual presence you want, because measurements, depth percentage, and length-to-width ratio matter as much as carat weight.

For example, two 2.00ct marquise diamonds may not look the same if one measures 13.7 x 6.5mm with a 2.11 ratio and the other measures 12.5 x 6.7mm with a 1.87 ratio. The longer stone may look larger from knuckle to knuckle, but if the depth is too shallow or the pavilion angles are poorly matched, it may lose brightness and show a stronger dark bow-tie through the center.

A balanced marquise usually gives you the best result when the length-to-width ratio sits around 1.75-2.25, the polish and symmetry grades are Very Good to Excellent, and the girdle is not extremely thin at the pointed ends.

• Strong finger coverage for the carat weight, such as a 1.50ct stone near 12.0 x 6.0mm
• A slim, elegant outline, often strongest between a 1.90 and 2.10 length-to-width ratio
• Good sparkle when the table, depth, polish, and symmetry are well balanced
• A distinctive look compared with a 1.50ct round brilliant, 1.50ct oval, or 1.50ct pear shape

The tradeoff is that marquise diamonds need careful evaluation beyond the lab report number. The tips should line up cleanly, the shoulders should mirror each other, and the center should not look overly dark in 360-degree video; honestly, I think this is where marquise shopping gets fun because a 2.05 ratio can feel sleek and dramatic while a 1.78 ratio can feel fuller and more vintage-inspired in the same 14K white gold solitaire.

Key Quality Factors in a Marquise Lab Grown Diamond Price Guide

Price changes quickly once you adjust grade, size, or proportions, especially around 1.00ct, 1.50ct, 2.00ct, and 3.00ct thresholds. Before you buy a certified marquise lab grown diamond, focus on cut appearance, bow-tie control, color grade, clarity grade, millimeter measurements, and the grading lab listed on the report.

Cut, symmetry, and bow-tie control

Cut quality carries the most visual weight for a marquise diamond because fancy shapes do not receive a universal GIA cut grade the way round brilliants do. A strong marquise cut returns light evenly from tip to tip, while a weak 2.00ct stone can look flat, glassy, or dark through the middle even when the color grade is F and the clarity grade is VS1.

Most marquise diamonds show some bow-tie effect, which is the darker area across the center caused by light obstruction in elongated fancy shapes such as marquise, oval, pear, and radiant cuts. A mild bow-tie can be normal in a 1.50ct G-VS2 marquise, but a heavy black band can make even a 3.00ct E-VVS2 diamond look dull in daylight and under jewelry store LEDs.

Check these details before comparing price on any IGI, GIA, or GCAL certified marquise lab grown diamond.

• Even, matched points with no visible tilt from tip to tip
• Balanced curves on both sides, especially through the shoulders and belly
• Very Good to Excellent polish and symmetry grades when available
• Clear 360-degree video or actual photos of the specific diamond, not stock imagery
• A length-to-width ratio that suits your taste, often 1.75-2.25 for engagement rings

Many buyers prefer a length-to-width ratio between 1.75 and 2.25 because a ratio near 1.75 looks fuller while a ratio near 2.25 looks more slender and dramatic. If you are unsure, compare a 1.50ct marquise around 11.4 x 6.3mm with a 1.50ct marquise around 12.4 x 5.8mm on a hand photo or ring rendering, because proportions can feel very different once the diamond sits in a 14K white gold cathedral setting or a 950 platinum bezel.

Color grade

Color affects price because whiter lab grown diamonds usually cost more, and marquise cuts can show tint near the pointed tips, especially at 2.00ct and above. If you want a crisp white look in 950 platinum or 14K white gold, D-F color is worth considering; a 1.50ct F-VS2 marquise may cost around $1,900-$3,000 depending on certification, cut appearance, and inventory.

For value, G and H often work beautifully in marquise lab grown diamonds because these near-colorless grades can look bright in most settings while leaving more budget for size or cut quality. A 2.00ct G-VS2 marquise in 14K yellow gold or 18K rose gold can look clean and white face-up while costing hundreds less than a similar D-F color stone.

Clarity grade

Lab grown diamonds often give shoppers access to higher clarity grades at friendlier prices than mined diamonds, but you do not always need VVS1, VVS2, or IF clarity. Many VS1 and VS2 marquise diamonds look eye-clean, especially when inclusions sit away from the table and outside the central bow-tie area; a 1.20ct F-VS2 marquise can be a smarter buy than a 1.00ct E-VVS1 if both look clean to the naked eye.

SI1 can also be a value pick if the inclusion is small, light-colored, or hidden near the edge under a prong, but the decision should be based on magnified images and face-up video. A lower clarity diamond with stronger light return, such as a 1.80ct G-SI1 with a mild bow-tie, can look better than a cleaner 1.80ct F-VVS2 with poor symmetry and a dark center; trust me, I have seen that happen under both daylight and showroom lighting.

Carat weight and measurements

Carat is a weight measurement, not a visible size measurement, which matters for marquise diamonds because shape, depth, and length-to-width ratio change how large the stone appears. Always compare millimeter measurements alongside carat weight, such as 10.0 x 5.0mm for many 1.00ct marquise diamonds, 12.0 x 6.0mm for many 1.50ct marquise diamonds, and 13.5 x 6.8mm for many 2.00ct marquise diamonds.

Price often jumps near popular milestones such as 1.00ct, 1.50ct, 2.00ct, and 3.00ct. Buying just under a milestone, such as 1.90ct instead of 2.00ct or 2.85ct instead of 3.00ct, may save $300-$1,200 while looking nearly identical on the hand when the measurements, color, clarity, and bow-tie control are strong.

Certification

A grading report adds confidence because it documents the diamond's laboratory-grown origin, carat weight, color, clarity, measurements, polish, symmetry, fluorescence, and growth method notes when applicable. GIA, IGI, and GCAL are recognized certification bodies for lab grown diamonds, and a report for a 2.01ct G-VS2 marquise should let you verify the exact measurements, proportions, and inscription before purchase.

A marquise lab grown diamond price guide is only useful if you can compare real specs from real reports. Avoid listings that hide millimeter measurements, use only stock photos, skip the IGI, GIA, or GCAL grading report, or describe a diamond only as "excellent quality" without listing carat weight, color grade, clarity grade, polish, symmetry, and actual stone media.

Typical Marquise Lab Grown Diamond Price Ranges by Carat

The table below gives broad retail ranges for certified marquise lab grown diamonds in common engagement-ring grades such as F-H color and VS1-VS2 clarity. Actual prices can move based on brand, GIA, IGI, or GCAL grading, length-to-width ratio, bow-tie control, inventory, and current lab-grown diamond market shifts.

Carat Weight	Typical Price Range	Smart Buying Notes
0.50 ct	$500 - $1,100	Good for petite rings, east-west solitaires, side-stone looks, and lower-profile 14K gold designs
1.00 ct	$900 - $2,000	Popular size with strong finger coverage, often around 10.0 x 5.0mm depending on proportions
1.50 ct	$1,500 - $3,200	Strong value range for engagement rings, especially G-H color and VS clarity stones
2.00 ct	$2,400 - $5,000	Big visual impact; bow-tie control, symmetry, and protected tips matter more at this size
3.00 ct	$4,500 - $9,000+	Premium size tier where IGI, GIA, or GCAL certification and precision setting work are key

Use these numbers as a starting point, not a fixed quote, because a 1.00ct D-VVS1 marquise can cost more than a 1.20ct G-VS2 marquise with better face-up size. The better buy depends on how each certified diamond looks in real video, how the measurements compare, and whether the color grade suits the metal, such as 14K white gold, 18K yellow gold, or 950 platinum.

Our customers often compare three or four stones side by side before choosing, such as a 1.52ct F-VS2, a 1.60ct G-VS1, and a 1.72ct H-VS2 marquise. That comparison helps them see whether a higher grade creates a visible difference, and often the best value sits in a well-cut G-H color and VS1-VS2 clarity diamond with a mild bow-tie and a clean IGI or GIA report.

How to Spot Better Value Before You Buy

A low price can be tempting, especially when a 2.00ct marquise appears online for under $2,400. Still, a marquise lab grown diamond price guide should help you avoid stones that look inexpensive because they have an obvious bow-tie, poor symmetry, overly thin tips, a hidden grading report, or measurements that face up smaller than expected.

Start with the video and look for brightness across the full length of the stone, including both pointed tips. Rotate the diamond if 360-degree video is available, and watch whether the bow-tie flashes on and off naturally or turns dark and stays dark across the center of a 1.50ct, 2.00ct, or 3.00ct marquise.

Next, compare the measurements because a diamond that carries too much weight in depth may look smaller than expected on the hand. A 2.00ct marquise measuring 12.4 x 6.4mm may face up smaller than a better-spread 1.85ct marquise measuring 13.0 x 6.2mm, while an overly shallow stone may look large but weak in sparkle.

Use this order when judging value for a certified marquise lab grown diamond.

1. Pick the shape and length-to-width ratio you like, such as 1.85, 2.00, or 2.15.
2. Confirm certification from GIA, IGI, GCAL, or another recognized grading lab.
3. Check symmetry, polish, girdle description, and exact millimeter measurements.
4. Choose an eye-clean clarity grade, often VS1 or VS2 for the best value.
5. Select color based on the setting metal, such as F-G for 14K white gold or G-H for 18K yellow gold.
6. Use carat weight to fine-tune the final look after confirming spread and bow-tie control.

This approach keeps you from overpaying for a paper grade you cannot see, such as VVS1 clarity on a diamond that already looks eye-clean at VS2. It also keeps you focused on the details that make a marquise diamond beautiful in daily wear: even light return, protected pointed tips, balanced shoulders, and a setting built in durable metal such as 14K gold or 950 platinum.

Here is what many shoppers learn during side-by-side comparison: the best diamond is rarely the one with the most impressive certificate. It is the 1.70ct G-VS2 with lively light return, the 2.05ct H-VS1 with a graceful 2.05 ratio, or the 1.25ct F-VS2 that looks crisp in a 14K white gold cathedral solitaire and feels right for the person who will wear it every day.

Matching a Marquise Diamond to the Right Setting

The setting affects both price and wearability, especially because marquise diamonds have pointed tips that need protection from knocks during daily wear. A simple 14K white gold solitaire usually costs less than a halo or three-stone ring, while a 950 platinum cathedral setting, pave band, hidden halo, or bezel design adds metal weight, small diamonds, and bench labor to the finished ring price.

Solitaire settings

A solitaire puts the marquise shape in the spotlight, especially in a 14K yellow gold, 14K white gold, or 950 platinum four-prong or six-prong design with V-prongs protecting the tips. Because there are fewer design details around the center stone, color, cut, symmetry, and bow-tie control become easier to see; for proposals, a 1.50ct G-VS2 marquise solitaire has old-soul romance while still feeling clean and confident.

Halo settings

A halo adds sparkle and can make the center diamond look larger by surrounding it with melee diamonds, often in the 0.8-1.5mm range depending on the design. A 1.00ct H-VS2 marquise in a 14K white gold halo may look closer in presence to a larger center stone, but the added diamonds and labor can raise the finished ring price by $600-$1,800 or more.

Bezel settings

A bezel wraps metal around the diamond and protects the tips, making it a smart option for active wearers who want a sleek modern style. A 950 platinum bezel or 14K yellow gold bezel can be excellent for a 1.20ct to 2.00ct marquise, but because more metal covers the edge, choose a bright diamond with strong light return and avoid stones with a heavy central bow-tie.

Three-stone settings

Three-stone rings add width and symbolism, especially when a marquise center is paired with tapered baguettes, pear-shaped side stones, round brilliant sides, or shield-cut accents. Side stones should be scaled carefully, such as 0.20ct to 0.35ct each for a 1.50ct marquise center, so they support the center instead of crowding the elongated outline.

In my 10 years at StoneBridge, people choosing anniversary rings or meaningful gifts often love three-stone designs because a 2.00ct G-VS2 marquise with tapered baguette sides in 950 platinum feels personal without needing a long explanation. The style has presence, but the proportions still keep the marquise center as the star.

If you are still choosing a style, browse our engagement ring settings or compare finished designs in our jewelry collection, including 14K white gold solitaires, 18K yellow gold halos, 950 platinum bezels, and cathedral settings with pave bands.

Care and Maintenance for a Marquise Lab Grown Diamond Ring

Lab grown diamonds are durable at 10 on the Mohs hardness scale, so the diamond itself is safe for daily wear, but the pointed tips and setting still need routine checks. For a marquise engagement ring, inspect the V-prongs, bezel edge, or tip guards every few months, especially on 14K gold prongs that can wear faster than 950 platinum over years of use.

An ultrasonic cleaner is generally safe for lab-grown diamonds, but it should be used carefully when the ring has pave diamonds, a halo, or delicate prongs. If your marquise ring has a cathedral setting with a pave band, use warm water, mild dish soap, and a soft baby toothbrush for weekly cleaning, then reserve ultrasonic cleaning for stones and settings confirmed secure by a jeweler.

Avoid chlorine bleach, harsh household chemicals, and abrasive cleaners on 14K white gold, 18K yellow gold, 18K rose gold, and 950 platinum jewelry. White gold rings may need rhodium plating every 12-24 months depending on wear, while platinum develops a natural patina and may need polishing rather than replating.

Schedule a professional inspection at least once a year so a jeweler can check prong tension, pave stones, the center diamond seat, and any engraving or hidden halo details. This is especially important for marquise rings because the pointed ends can chip if a loose V-prong leaves a tip exposed during daily wear.

Practical Buying Checklist

Before you buy, slow down and check the details on the grading report, stone video, and ring specifications. The right questions can save you from a poor match, whether you are buying a 0.90ct F-VS2 marquise for a petite solitaire or a 2.50ct G-VS1 marquise for a 950 platinum three-stone ring.

Ask these before checkout on any marquise lab grown diamond or finished engagement ring.

• Is the diamond certified by GIA, IGI, GCAL, or another known lab?
• Are the exact millimeter measurements listed, such as 12.1 x 6.0mm?
• Does the listing show the actual diamond through video or photos, not just a sample image?
• Is the bow-tie mild enough for your taste under rotation?
• Are the points protected by V-prongs, a bezel, or another secure setting detail?
• Does the color grade suit the metal color, such as F-G for 14K white gold or G-H for yellow gold?
• Is the return policy clear enough to inspect the diamond under home lighting?

A marquise lab grown diamond price guide should make shopping feel less like guesswork and more like a technical comparison of real stones. Once you know how to compare a 1.50ct G-VS2 against a 1.70ct H-VS1 by measurements, ratio, bow-tie, certification, and setting metal, the stronger options stand out quickly, and yes, you can find a beautiful marquise diamond on a budget if you know which grades change the look and which ones mainly change the receipt.

Shop Marquise Lab Grown Diamonds with Confidence

The best marquise diamond is not always the largest carat weight or the highest paper grade. It is the stone with the right mix of brightness, proportions, certification, and price, such as a 1.25ct F-VS2 with clean symmetry, a 1.80ct G-VS1 with a mild bow-tie, or a 2.20ct H-VS2 that looks balanced in a 14K yellow gold cathedral setting.

Use this marquise lab grown diamond price guide as a checklist while you shop for a certified stone from IGI, GIA, or GCAL. Compare millimeter measurements, review the grading report, choose a setting that protects the pointed ends, and when you are ready, shop lab-grown diamonds at StoneBridge Jewelry to build a ring in 14K white gold, 18K yellow gold, 18K rose gold, or 950 platinum that fits your style and budget.

FAQ

How much does a marquise lab grown diamond cost?

A marquise lab grown diamond often costs between $900 and $2,000 for a 1.00ct certified stone in common grades such as G-H color and VS1-VS2 clarity, while 2.00ct options may range from about $2,400 to $5,000. Prices rise with higher color, higher clarity, stronger symmetry, better bow-tie control, and larger carat weight, so use a marquise lab grown diamond price guide to compare stones by measurements as well as carat weight. A well-cut 1.50ct G-H color and VS clarity diamond often gives strong value for a 14K white gold or 950 platinum engagement ring.

Are marquise lab grown diamonds cheaper than mined marquise diamonds?

Yes, lab grown marquise diamonds are usually less expensive than mined diamonds with similar grades, especially when comparing certified stones from GIA, IGI, or GCAL. GIA notes that lab grown diamonds have the same chemical and optical properties as natural diamonds, but they have a different origin. That price difference can help you choose a larger stone, such as a 2.00ct G-VS2 marquise, or upgrade to a better setting, such as a 950 platinum cathedral ring with a pave band. Always compare certified diamonds with similar carat weight, color, clarity, measurements, and symmetry for a fair price check.

What is the best length-to-width ratio for a marquise lab grown diamond?

Many shoppers like a length-to-width ratio between 1.75 and 2.25 for marquise lab grown diamonds. A lower ratio near 1.75 looks fuller, while a higher ratio near 2.25 looks longer and more dramatic, especially in a north-south solitaire. The best choice depends on your hand, setting, and style preference; a 1.50ct marquise in a 14K yellow gold bezel may look best at a fuller ratio, while a 2.00ct marquise in a 950 platinum solitaire may look elegant around 2.05. Before buying, compare videos of different ratios so you can see which shape feels balanced to you.

Do marquise lab grown diamonds show bow-tie?

Yes, most marquise diamonds show some bow-tie because of their elongated shape and facet pattern. A small bow-tie is normal and may not hurt the look of a 1.20ct F-VS2 or 1.80ct G-VS1 marquise, but a strong, dark bow-tie can reduce brightness through the center. Review actual photos or 360-degree video before you buy, especially for 2.00ct and 3.00ct stones where the center area is easier to see. If possible, compare several IGI, GIA, or GCAL certified marquise lab grown diamonds side by side.

What should I check before buying a marquise lab grown diamond online?

Check the grading report, exact millimeter measurements, color grade, clarity grade, polish, symmetry, girdle description, and actual stone images or video. Look closely at the tips, shoulders, and center area for symmetry and bow-tie control, then make sure the setting protects the pointed ends with V-prongs, a bezel, or another secure design. Match the color grade to the metal, such as F-G for 14K white gold or 950 platinum and G-H for 18K yellow gold or 18K rose gold. A clear return policy gives you room to inspect the diamond under daylight, indoor lighting, and normal daily conditions at home.

Can I clean a marquise lab grown diamond ring in an ultrasonic cleaner?

An ultrasonic cleaner is generally safe for lab-grown diamonds because they have the same hardness and crystal structure as mined diamonds, but the full ring setting matters. A secure 14K gold solitaire with a tight center stone may be suitable, while a halo, pave band, hidden halo, or older prong setting should be inspected before ultrasonic cleaning because vibration can loosen small melee diamonds. For routine care, clean a marquise Lab Grown Diamond Ring with warm water, mild dish soap, and a soft brush, then have a jeweler check the V-prongs and pointed tips at least once a year.