Cushion|Lab Grown|IGI

5.15ct F VVS2 Cushion Lab Grown Diamond

EX • F/VVS2 • IGI LG831679631

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG831679631

Diamond specifications and retailer prices

From $779 USD
As of November 1, 2026
Save $548 USD (41%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $4,310 USD at Rare Carat · As of October 19, 2026
View at Rare Carat

About this 5.15ct lab-grown cushion diamond

This 5.15ct lab-grown cushion sits in the over five carat band, graded F colour (colourless) and VVS2 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG831679631 or 831679631. Listed at 3 retailers as of November 1, 2026, with a 70% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

5.15
Carat
F
Color
VVS2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle35.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831679631
Dimensions12.12 × 9.09 × 5.98 mm
L/W Ratio1.33
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.12 mm9.09 mm5.15 ctF / VVS2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG831679631
Side View
Table 64.0%Crown 36.5°Girdle: MED-STKPavilion 35.6°Culet: NoneDepth 65.8%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: $4,310 USD|Low: $779 USD|High: $4,330 USD|Avg: $2,219 USD|+0.3%
Rare Carat
Retailer 2
Retailer 3
November 2, 2026
Retailer 3$779 USD
Retailer 2$1,327 USD
Rare Carat$4,310 USD

37 data points across 3 retailers

3 retailers$779 USD to $1,327 USD

A
Cheapest Retailer
-
$779 USD
Final sale: no returns
A
Retailer 2
-
$1,327 USD
£1,045 GBP
View
Most Expensive
Rare Carat
831679631 · Oct 19
$4,310 USD
View
Price last confirmed 14 days ago
2 more retailers have this diamond
Prices start from $779 USDSave up to $548 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
5.15ct Cushion
$779 USD