1.7 Carat Marquise Lab Grown Diamond Prices Comparison
As of February 2026, 1.7 carat marquise lab grown diamonds usually range from $510 to $4,522, with an average price of $1,039.In the last month, prices for these diamonds are down 1.8%.Compare 198 verified listings across 9 retailers tracked by CaratRadar.
1.7 Carat Marquise Lab Grown Diamond Market Overview
CaratRadar currently tracks 198 verified 1.7-carat marquise lab grown diamonds listed across 9 online retailers. Prices in this segment range from $510 to $4,522, with an average asking price of $1,039 and a median of $754.
The price spread of $4,013 (88.7% from highest to lowest) highlights why comparing identical certified diamonds across multiple retailers matters. Two identical certified diamonds can differ by hundreds or even thousands of dollars depending on the retailer.
These figures are based on our latest daily market data, matched by certification lab and certificate number across retailers, so you are comparing the exact same diamond.
198 diamonds tracked in this segment
Price range: $510 to $4,522
Average price: $1,039
Median price: $754
Available across 9 retailers
Savings potential: up to 88.7%
Price Range Overview
As of Feb 28, 2026Real market range for this carat, shape, and diamond type.
198
$510
$1,039
$754
$4,522
Price History
Price Comparison Matrix
Live Listings
See all listingsCompare current retailer offers for this exact segment and open any listing for full details.
IGISave 53.3%1.65ct | Marquise | E | VS1 | Ideal
From $637
Compare at $1,365
IGISave 48.3%1.65ct | Marquise | F | VVS1 | Excellent
From $716
Compare at $1,385
IGISave 63.6%1.65ct | Marquise | D | VVS1 | Excellent
From $1,136
Compare at $3,120
IGISave 67.4%1.65ct | Marquise | D | VVS2 | Ideal
From $954
Compare at $2,930
IGISave 49.3%1.65ct | Marquise | F | VS1 | Very Good
From $636
Compare at $1,255
1.65ct | Marquise | D | VVS2 | Very Good
From $791
Compare at $2,770
IGISave 61.6%1.65ct | Marquise | D | VVS1 | Excellent
From $1,264
Compare at $3,291
IGISave 15.6%1.65ct | Marquise | E | VS1 | Very Good
From $1,086
Compare at $1,287
IGISave 53.3%1.65ct | Marquise | E | VS1 | Ideal
From $637
Compare at $1,365
IGISave 53.4%1.65ct | Marquise | G | VVS2 | Very Good
From $1,203
Compare at $2,583
IGISave 29.7%1.65ct | Marquise | E | VS1 | Very Good
From $643
Compare at $915
IGISave 70.8%1.65ct | Marquise | D | VVS2 | Very Good
From $954
Compare at $3,270
IGISave 48.6%1.66ct | Marquise | E | VVS2 | Excellent
From $791
Compare at $1,540
IGISave 61.6%1.66ct | Marquise | D | VVS1 | Very Good
From $1,271
Compare at $3,311
IGISave 62.9%1.66ct | Marquise | D | VS1 | Very Good
From $824
Compare at $2,220
IGISave 51.6%1.66ct | Marquise | F | VS1 | Excellent
From $669
Compare at $1,384
IGISave 67.5%1.66ct | Marquise | D | VVS1 | Ideal
From $1,076
Compare at $3,311
IGISave 55.1%1.66ct | Marquise | F | VS1 | Very Good
From $556
Compare at $1,236
IGISave 81%1.66ct | Marquise | D | IF | Excellent
From $1,796
Compare at $9,450
1.66ct | Marquise | D | VVS2 | Very Good
From $900
Compare at $2,870
IGISave 54.4%1.66ct | Marquise | E | VS1 | Very Good
From $627
Compare at $1,375
IGISave 50.3%1.66ct | Marquise | F | VS2 | Very Good
From $600
Compare at $1,208
IGISave 51.8%1.66ct | Marquise | E | VS2 | Ideal
From $615
Compare at $1,275
IGISave 74.7%1.66ct | Marquise | D | VVS2 | Ideal
From $834
Compare at $3,290
IGISave 64.6%1.66ct | Marquise | E | VVS1 | Ideal
From $1,114
Compare at $3,145
IGISave 50.3%1.66ct | Marquise | F | VS2 | Very Good
From $600
Compare at $1,208
IGISave 69.2%1.66ct | Marquise | D | VVS2 | Very Good
From $782
Compare at $2,540
IGISave 32.9%1.66ct | Marquise | D | VVS2 | Very Good
From $757
Compare at $1,128
IGISave 69.2%1.66ct | Marquise | D | VVS1 | Excellent
From $1,179
Compare at $3,830
IGISave 52.9%1.66ct | Marquise | E | VS1 | Excellent
From $627
Compare at $1,330
GIASave 84.2%1.66ct | Marquise | D | VVS1 | Excellent
From $1,292
Compare at $8,170
IGISave 51.9%1.67ct | Marquise | E | VS2 | Very Good
From $618
Compare at $1,285
IGISave 81%1.67ct | Marquise | D | IF | Good
From $1,805
Compare at $9,510
IGISave 69.7%1.67ct | Marquise | E | VVS2 | Very Good
From $990
Compare at $3,270
IGISave 47%1.67ct | Marquise | F | VS1 | Ideal
From $1,524
Compare at $2,877
IGISave 69.6%1.67ct | Marquise | D | IF | Excellent
From $2,502
Compare at $8,217
GIASave 81.8%1.67ct | Marquise | E | IF | Excellent
From $2,893
Compare at $15,870
IGISave 51.9%1.67ct | Marquise | E | VS2 | Ideal
From $618
Compare at $1,285
IGISave 54.5%1.67ct | Marquise | E | VS1 | Ideal
From $631
Compare at $1,385
IGISave 21.1%1.67ct | Marquise | D | VVS2 | Excellent
From $824
Compare at $1,044
IGISave 45.9%1.67ct | Marquise | E | VS2 | Very Good
From $668
Compare at $1,235
IGISave 68.6%1.67ct | Marquise | D | VVS2 | Excellent
From $838
Compare at $2,666
IGISave 49.3%1.67ct | Marquise | F | VVS2 | Very Good
From $650
Compare at $1,284
IGISave 80.7%1.67ct | Marquise | D | IF | Ideal
From $1,835
Compare at $9,510
IGISave 52.4%1.67ct | Marquise | F | VVS1 | Excellent
From $667
Compare at $1,400
GIASave 63.6%1.67ct | Marquise | D | VVS1 | Excellent
From $1,700
Compare at $4,676
GIASave 80.2%1.67ct | Marquise | D | IF | Excellent
From $2,919
Compare at $14,710
IGISave 67.5%1.68ct | Marquise | D | VVS1 | Excellent
From $1,258
Compare at $3,870
IGISave 52.9%1.68ct | Marquise | E | VS2 | Ideal
From $607
Compare at $1,290
IGISave 78.9%1.68ct | Marquise | E | VS1 | Ideal
From $593
Compare at $2,810
Entry pricing in this category starts around $510.
What to Know When Shopping for 1.7 Carat Marquise Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $4,013 or more.
- Focus on the 4Cs that matter most to you. Color and clarity grades drive price more than cut in many segments, but cut affects sparkle the most.
- The median price of $754 is a useful benchmark. If you see a deal significantly below this, verify the retailer's reputation and return policy.
- Consider eye-clean alternatives. Moving one clarity grade down (e.g., VS2 to SI1) can save 10-15% with no visible difference to the naked eye.
- Lab-grown diamonds offer excellent value. Ensure the stone comes with a GIA or IGI certificate confirming it is laboratory-grown.
- Check shipping, insurance, and return policies. The lowest sticker price is not always the best deal once you factor in total cost of purchase.
- Marquise diamonds maximize carat weight face-up and appear larger than their actual weight. Check symmetry carefully.
Frequently Asked Questions
We currently track 198 comparable stones in this segment. Prices start around $510 and go up to $4,522.
Based on the latest market data, the average asking price is about $1,039 with a median around $754.
The observed spread is roughly $4,013 across tracked listings, which is about 88.7% from highest to lowest offer in this bucket.
We refresh pricing data daily so these pages stay current with market changes.
Based on our data, the median price is $754, which represents the midpoint of the market. Anything below this figure from a reputable retailer is a solid deal.
We currently track this stone category across 9 online retailers, giving you a broad view of the competitive landscape.
For most buyers, color differences below G are hard to detect once set in a ring. Clarity grades of VS2 and above are typically eye-clean. Prioritize cut quality for maximum brilliance, then balance color and clarity based on your budget.
Retailer pricing strategies, overhead costs, and margin targets all contribute. The exact certified diamond can differ by $4,013 across sellers, which is why direct certified-diamond comparison is essential.
We match diamonds across retailers by their certification lab and certificate number. This means the prices you see are for the exact same physical diamond, not just stones with similar specs. It is a true apples-to-apples comparison.
Diamond prices fluctuate based on supply and demand. Our data refreshes regularly so you can track trends over time. Use the price range on this page as a benchmark and compare it to historical averages when available.
Diamond Terminology
- Carat
- A unit of weight for diamonds equal to 200 milligrams. Larger carat weights are exponentially rarer, which is why prices increase non-linearly with size.
- Cut
- Refers to how well a diamond's facets interact with light. Cut quality ranges from Ideal to Poor and is the single biggest factor affecting a diamond's brilliance.
- Color
- Grades a diamond's lack of color on a scale from D (colorless) to Z (light yellow). Grades D-F are considered colorless; G-J are near-colorless and offer good value.
- Clarity
- Measures the presence of internal inclusions or surface blemishes. Grades range from Flawless (FL) to Included (I3). Most inclusions in VS2 and above are invisible to the naked eye.
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Tracking Lab Grown inventory for 1.7 carat Marquise diamonds.