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Cushion|Lab Grown|IGI

3.15ct G VS1 Cushion Lab Grown Diamond

ID • G/VS1 • IGI LG668409650

Shape and cutting style on the report: Cushion modified brilliant cut

Certificate IGI LG668409650

Diamond specifications and retailer prices

From $425 USD
As of November 1, 2026
Save $2,375 USD (85%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $2,800 USD at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

About this 3.15ct lab-grown cushion diamond

This 3.15ct 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 LG668409650 or 668409650. Listed at 14 retailers as of November 1, 2026, with prices from $425 to $2,800, a $2,375 spread on the same certified stone. Brilliant Earth lists it at $2,800. 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

3.15
Carat
G
Color
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle37.6°
Pavilion angle34.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG668409650
Dimensions9.20 × 7.49 × 5.34 mm
L/W Ratio1.23
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.20 mm7.49 mm3.15 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG668409650
Side View
Table 58.0%Crown 37.6°Girdle: STK-VTKPavilion 34.2°Culet: NoneDepth 71.3%

Caratlytics Score

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

Price History

Last verified: Nov 1
Current: $2,800 USD|Low: $425 USD|High: $2,900 USD|Avg: $1,190 USD
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 2, 2026
Retailer 6$425 USD
Retailer 5$477 USD
Retailer 10$735 USD
Retailer 14$751 USD
Retailer 12$781 USD
Retailer 9$823 USD
Retailer 7$845 USD
Retailer 2$1,026 USD
Retailer 11$1,097 USD
Retailer 3$1,553 USD
Retailer 13$1,763 USD
Retailer 4$1,829 USD
Retailer 8$1,840 USD
Brilliant Earth$2,800 USD

44 data points across 14 retailers

14 retailers$425 USD to $2,800 USD

A
Cheapest Retailer
-
$425 USD
Final sale: no returns
Retailer 2
-
$477 USD
View
Price last confirmed 8 days ago
A
Retailer 3
-
$735 USD
View
B+
Retailer 4
-
$751 USD
View
A
Retailer 5
-
$781 USD
View
A
Retailer 6
-
$823 USD
€784 EUR
View
A
Retailer 7
-
$845 USD
£665 GBP
View
A
Retailer 8
-
$1,026 USD
ZAR 16,577 ZAR
View
A
Retailer 9
-
$1,097 USD
View
B+
Retailer 10
-
$1,553 USD
View
B+
Retailer 11
-
$1,763 USD
View
B+
Retailer 12
-
$1,829 USD
£1,440 GBP
View
B+
Retailer 13
-
$1,840 USD
£1,449 GBP
View
Most Expensive
B
Brilliant Earth
13160590A · Nov 2
$2,800 USD
View
13 more retailers have this diamond
Prices start from $425 USDSave up to $2,375 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
3.15ct Cushion
$425 USD