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Cushion|Lab Grown|IGI

3.51ct G VS1 Cushion Lab Grown Diamond

ID • G/VS1 • IGI LG725512307

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG725512307

Diamond specifications and retailer prices

From $889 USD
As of November 1, 2026
Save $2,511 USD (74%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $3,400 USD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

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 VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG725512307 or 725512307. Listed at 14 retailers as of October 31, 2026, with prices from $889 to $3,400, a $2,511 spread on the same certified stone. Brilliant Earth lists it at $3,400. 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
SymmetryVery Good
FluorescenceNone
Crown angle36.2°
Pavilion angle35.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG725512307
Dimensions8.53 × 8.47 × 5.74 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.53 mm8.47 mm3.51 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG725512307
Side View
Table 62.0%Crown 36.2°Girdle: THK-VTKPavilion 35.1°Culet: NoneDepth 67.8%

Caratlytics Score

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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: Nov 1
Current: $3,400 USD|Low: $573 USD|High: $3,680 USD|Avg: $1,513 USD|-7.6%
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
November 1, 2026
Retailer 6$573 USD
Retailer 9$889 USD
Retailer 11$897 USD
Retailer 4$910 USD
Retailer 2$942 USD
Retailer 7$960 USD
Retailer 8$1,208 USD
Retailer 3$1,259 USD
Retailer 13$1,676 USD
Retailer 12$1,874 USD
Retailer 14$2,142 USD
Retailer 10$2,146 USD
Retailer 5$2,390 USD
Brilliant Earth$3,400 USD

44 data points across 14 retailers

14 retailers$889 USD to $3,400 USD

Retailer 1
-
$573 USD
Price last confirmed 15 days ago
A
Retailer 2
-
$889 USD
View
B+
Retailer 3
-
$897 USD
View
A
Retailer 4
-
$910 USD
View
A
Retailer 5
-
$942 USD
£742 GBP
View
A
Retailer 6
-
$960 USD
€914 EUR
View
A
Retailer 7
-
$1,208 USD
View
A
Retailer 8
-
$1,259 USD
ZAR 20,341 ZAR
View
B+
Retailer 9
-
$1,676 USD
£1,320 GBP
View
B+
Retailer 10
-
$1,874 USD
View
B+
Retailer 11
-
$2,142 USD
£1,687 GBP
View
B+
Retailer 12
-
$2,146 USD
View
Retailer 13
-
$2,390 USD
View
Price last confirmed 13 days ago
Most Expensive
B
Brilliant Earth
16723690A · Oct 31
$3,400 USD
View
13 more retailers have this diamond
Prices start from $889 USDSave up to $2,511 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
$889 USD