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Cushion|Lab Grown|IGI

3.51ct G VS2 Cushion Lab Grown Diamond

EX • G/VS2 • IGI LG645459123

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG645459123

Diamond specifications and retailer prices

From $717 USD
As of October 31, 2026
Save $4,973 USD (87%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $5,690 USD at Do Amore Diamonds · As of November 1, 2026
View at Do Amore Diamonds

About this 3.51ct lab-grown cushion diamond

This 3.51ct lab-grown cushion sits in the three to five carat band, graded G colour (near-colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG645459123 or 645459123. Listed at 14 retailers as of October 31, 2026, with prices from $717 to $5,690, a $4,973 spread on the same certified stone. Do Amore Diamonds lists it at $5,690. 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
VS2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.8°
Pavilion angle35.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG645459123
Dimensions8.89 × 8.51 × 5.50 mm
L/W Ratio1.04
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.89 mm8.51 mm3.51 ctG / VS2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG645459123
Side View
Table 62.0%Crown 39.8°Girdle: STK-VTKPavilion 35.7°Culet: NoneDepth 64.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $5,690 USD|Low: $717 USD|High: $5,690 USD|Avg: $2,112 USD
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 1, 2026
Retailer 10$717 USD
Retailer 7$840 USD
Retailer 8$995 USD
Retailer 4$1,026 USD
Retailer 12$1,142 USD
Retailer 5$1,314 USD
Retailer 9$2,532 USD
Retailer 3$2,545 USD
Retailer 11$2,578 USD
Retailer 2$3,219 USD
Retailer 6$3,450 USD
Do Amore Diamonds$5,690 USD

42 data points across 12 retailers

14 retailers$717 USD to $5,690 USD

A
Cheapest Retailer
-
$717 USD
Final sale: no returns
A
Retailer 2
-
$840 USD
View
A
Retailer 3
-
$902 USD
View
Retailer 4
-
$995 USD
£784 GBP
View
Price last confirmed 15 days ago
B+
Retailer 5
-
$1,026 USD
View
A
Retailer 6
-
$1,142 USD
View
A
Retailer 7
-
$1,314 USD
£1,035 GBP
View
B
Retailer 8
-
$2,532 USD
View
B
Retailer 9
-
$2,545 USD
£2,004 GBP
View
B
Retailer 10
-
$2,578 USD
View
B
Retailer 11
-
$2,936 USD
View
B
Retailer 12
-
$3,219 USD
£2,535 GBP
View
B
Retailer 13
-
$3,450 USD
View
Most Expensive
B
Do Amore Diamonds
27-0EB6B45EE · Nov 1
$5,690 USD
View
13 more retailers have this diamond
Prices start from $717 USDSave up to $4,973 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 Cushion
$717 USD