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Radiant|Lab Grown|IGI

15.31ct F VVS2 Radiant Lab Grown Diamond

ID • F/VVS2 • IGI LG797691346

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG797691346

Diamond specifications and retailer prices

From $4,976 USD
As of November 1, 2026
Save $18,076 USD (78%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $32,920 USD at Do Amore Diamonds · As of November 2, 2026
View at Do Amore Diamonds

About this 15.31ct lab-grown radiant diamond

This 15.31ct lab-grown radiant 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 LG797691346 or 797691346. Listed at 16 retailers as of October 31, 2026, with a 363% 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

15.31
Carat
F
Color
VVS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle47.3°
Pavilion angle30.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG797691346
Dimensions17.87 × 12.02 × 7.67 mm
L/W Ratio1.49
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
17.87 mm12.02 mm15.31 ctF / VVS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG797691346
Side View
Table 69.0%Crown 47.3°Girdle: STK-THKPavilion 30.5°Culet: NoneDepth 63.8%

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: $5,252 USD|Low: $4,976 USD|High: $32,420 USD|Avg: $14,100 USD|-1.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 6$4,976 USD
Retailer 1$5,252 USD
Retailer 8$5,925 USD
Retailer 9$5,925 USD
Retailer 2$5,969 USD
Retailer 4$8,330 USD
Retailer 7$10,123 USD
Retailer 5$12,475 USD
Retailer 3$16,841 USD
Retailer 11$18,963 USD
Retailer 10$31,450 USD

40 data points across 11 retailers

16 retailers$4,976 USD to $23,052 USD

A
Cheapest Retailer
-
$4,976 USD
A
Retailer 2
-
$5,252 USD
£4,136 GBP
View
B+
Retailer 3
-
$5,363 USD
CA$7,448 CAD
View
Retailer 4
-
$5,925 USD
View
Price last confirmed 21 days ago
B+
Retailer 5
-
$5,925 USD
View
B+
Retailer 6
-
$5,969 USD
View
B+
Retailer 7
-
$8,330 USD
£6,559 GBP
View
B
Retailer 8
-
$8,557 USD
View
B+
Retailer 9
-
$10,123 USD
ZAR 163,539 ZAR
View
Retailer 10
-
$10,531 USD
View
Price last confirmed 85 days ago
B
Retailer 11
-
$12,475 USD
A$19,192 AUD
View
B
Retailer 12
-
$12,945 USD
View
B
Retailer 13
-
$16,841 USD
View
B
Retailer 14
-
$23,052 USD
View
Retailer 15
-
$31,450 USD
View
Price under review
Most Expensive
Do Amore Diamonds
25-1509702-082 · Nov 2
$32,920 USD
View
Price under review
15 more retailers have this diamond
Prices start from $4,976 USDSave up to $18,076 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
15.31ct Radiant
$4,976 USD