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Radiant|Natural|GIA

0.51ct D SI2 Radiant Natural Diamond

EX • D/SI2 • GIA 6223495631

Certificate GIA 6223495631

Diamond specifications and retailer prices

From $1,103 USD
As of October 30, 2026
Save $536 USD (33%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $1,639 USD at 77 Diamonds · As of October 31, 2026
View at 77 Diamonds

About this 0.51ct natural radiant diamond

This 0.51ct natural radiant sits in the half to three-quarter carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6223495631. Listed at 2 retailers as of October 30, 2026, with prices from $1,103 to $1,639, a $536 spread on the same certified stone. 77 Diamonds lists it at $1,639. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

0.51
Carat
D
Color
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishGood
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6223495631
Dimensions6.16 × 3.87 × 2.53 mm
L/W Ratio1.59
Top View
6.16 mm3.87 mm0.51 ctD / SI2
OriginNatural
CutExcellent
PolishGood
SymmetryVery Good
FluorescenceNone
CertificateGIA 6223495631
Side View
Table 60.0%CrownGirdle: Very ThickPavilionCuletDepth 65.4%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 30
Current: $1,639 USD|Low: $1,087 USD|High: $1,642 USD|Avg: $1,363 USD|+2.3%
77 Diamonds
Retailer 2
October 31, 2026
Retailer 2$1,103 USD
77 Diamonds$1,639 USD

33 data points across 2 retailers

2 retailers$1,103 USD to $1,639 USD

B
Cheapest Retailer
-
$1,103 USD
Most Expensive
B
77 Diamonds
RADZVSHGMDFT · Oct 31
$1,639 USD
£1,291 GBP
View
1 more retailer has this diamond
Prices start from $1,103 USDSave up to $536 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.

B
0.51ct Radiant
$1,103 USD