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Radiant|Lab Grown|IGI

5.21ct F VS2 Radiant Lab Grown Diamond

EX • F/VS2 • IGI LG665442716

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

Certificate IGI LG665442716

Diamond specifications and retailer prices

From $760 USD
As of November 2, 2026
Save $2,845 USD (79%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $3,605 USD at Rare Carat · As of November 1, 2026
View at Rare Carat

About this 5.21ct lab-grown radiant diamond

This 5.21ct lab-grown radiant sits in the over five carat band, graded F colour (colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG665442716 or 665442716. Listed at 22 retailers as of November 1, 2026, with prices from $760 to $3,605, a $2,845 spread on the same certified stone. Rare Carat lists it at $3,605. 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

5.21
Carat
F
Color
VS2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.7°
Pavilion angle34.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG665442716
Dimensions12.53 × 8.50 × 5.55 mm
L/W Ratio1.47
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.53 mm8.50 mm5.21 ctF / VS2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG665442716
Side View
Table 68.0%Crown 44.7°Girdle: MED-STKPavilion 34.1°Culet: NoneDepth 65.3%

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 2
Current: $3,605 USD|Low: $723 USD|High: $3,630 USD|Avg: $1,995 USD|-0.7%
Rare Carat
Retailer 2
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Retailer 11
Retailer 12
Retailer 13
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Retailer 18
November 3, 2026
Retailer 3$760 USD
Retailer 18$827 USD
Retailer 8$882 USD
Retailer 9$882 USD
Retailer 12$970 USD
Retailer 17$1,060 USD
Retailer 2$1,351 USD
Retailer 15$1,405 USD
Retailer 16$1,426 USD
Retailer 4$1,964 USD
Retailer 11$1,968 USD
Retailer 5$2,479 USD
Retailer 6$2,743 USD
Retailer 14$2,981 USD
Retailer 7$3,043 USD
Retailer 13$3,305 USD
Retailer 10$3,411 USD
Rare Carat$3,605 USD

41 data points across 18 retailers

22 retailers$760 USD to $3,605 USD

A
Cheapest Retailer
-
$760 USD
A
Retailer 2
-
$827 USD
View
A
Retailer 3
-
$843 USD
View
Final sale: no returns
A
Retailer 4
-
$882 USD
View
Retailer 5
-
$882 USD
View
Price last confirmed 17 days ago
A
Retailer 6
-
$970 USD
£764 GBP
View
A
Retailer 7
-
$1,050 USD
HK$8,200 HKD
View
A
Retailer 8
-
$1,060 USD
View
A
Retailer 9
-
$1,351 USD
£1,064 GBP
View
A
Retailer 10
-
$1,405 USD
€1,338 EUR
View
B+
Retailer 11
-
$1,426 USD
View
B+
Retailer 12
-
$1,964 USD
View
B+
Retailer 13
-
$1,968 USD
View
B+
Retailer 14
-
$2,479 USD
View
B
Retailer 15
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$2,743 USD
£2,160 GBP
View
B
Retailer 16
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$2,866 USD
View
B
Retailer 17
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$2,981 USD
View
B
Retailer 18
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$3,024 USD
SGD 4,087 SGD
View
Retailer 19
-
$3,043 USD
View
Price last confirmed 15 days ago
B
Retailer 20
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$3,305 USD
£2,602 GBP
View
Retailer 21
-
$3,411 USD
A$5,247 AUD
View
Price last confirmed 25 days ago
Most Expensive
B
Rare Carat
KI7164427KF665 · Nov 1
$3,605 USD
View
21 more retailers have this diamond
Prices start from $760 USDSave up to $2,845 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
5.21ct Radiant
$760 USD