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Marquise|Lab Grown|IGI

3.51ct G VS1 Marquise Lab Grown Diamond

ID • G/VS1 • IGI LG801635337

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG801635337

Diamond specifications and retailer prices

From $494 USD
As of October 31, 2026
Save $2,796 USD (85%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $3,290 USD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 3.51ct lab-grown marquise diamond

This 3.51ct lab-grown marquise sits in the three to five carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG801635337 or 801635337. Listed at 25 retailers as of October 31, 2026, with prices from $494 to $3,290, a $2,796 spread on the same certified stone. Brilliant Earth lists it at $3,290. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

3.51
Carat
G
Color
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.6°
Pavilion angle39.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG801635337
Dimensions15.81 × 8.02 × 4.74 mm
L/W Ratio1.97
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
15.81 mm8.02 mm3.51 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG801635337
Side View
Table 63.0%Crown 34.6°Girdle: STK-THKPavilion 39.9°Culet: NoneDepth 59.1%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 31
Current: $3,290 USD|Low: $490 USD|High: $3,400 USD|Avg: $1,333 USD|-3.2%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 1, 2026
Retailer 17$494 USD
Retailer 9$510 USD
Retailer 6$633 USD
Retailer 10$633 USD
Retailer 8$730 USD
Retailer 2$735 USD
Retailer 13$865 USD
Retailer 12$904 USD
Retailer 5$1,004 USD
Retailer 14$1,200 USD
Retailer 18$1,336 USD
Retailer 4$1,373 USD
Retailer 7$1,480 USD
Retailer 16$1,792 USD
Retailer 11$1,964 USD
Retailer 15$2,047 USD
Retailer 3$2,654 USD
Brilliant Earth$3,290 USD

38 data points across 18 retailers

25 retailers$494 USD to $3,290 USD

A
Cheapest Retailer
-
$494 USD
Final sale: no returns
A
Retailer 2
-
$510 USD
View
Retailer 3
-
$510 USD
View
Price last confirmed 24 days ago
Retailer 4
-
$510 USD
View
Price last confirmed 15 days ago
Retailer 5
-
$510 USD
View
Price last confirmed 10 days ago
Retailer 6
-
$571 USD
View
Price last confirmed 7 days ago
Retailer 7
-
$571 USD
View
Price last confirmed 33 days ago
Retailer 8
-
$624 USD
View
Price last confirmed 37 days ago
Retailer 9
-
$633 USD
View
Price last confirmed 29 days ago
Retailer 10
-
$633 USD
View
Price last confirmed 16 days ago
A
Retailer 11
-
$730 USD
View
B+
Retailer 12
-
$735 USD
View
A
Retailer 13
-
$865 USD
View
A
Retailer 14
-
$904 USD
£712 GBP
View
A
Retailer 15
-
$1,200 USD
View
A
Retailer 16
-
$1,336 USD
A$2,055 AUD
View
A
Retailer 17
-
$1,373 USD
ZAR 22,184 ZAR
View
B+
Retailer 18
-
$1,480 USD
View
Retailer 19
-
$1,664 USD
View
Price last confirmed 31 days ago
Retailer 20
-
$1,664 USD
View
Price last confirmed 7 days ago
B+
Retailer 21
-
$1,792 USD
View
B+
Retailer 22
-
$1,964 USD
View
B+
Retailer 23
-
$2,047 USD
View
B
Retailer 24
-
$2,654 USD
£2,090 GBP
View
Most Expensive
B
Brilliant Earth
20042804A · Oct 31
$3,290 USD
View
24 more retailers have this diamond
Prices start from $494 USDSave up to $2,796 USD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
3.51ct Marquise
$494 USD