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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 HK$8,654 HKD
$1,103 USD
As of October 31, 2026
Save HK$4,099 HKD (32%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: HK$12,753 HKD at 77 Diamonds · As of November 1, 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 31, 2026, with prices from HK$8,654 to HK$12,753, a HK$4,099 spread on the same certified stone. 77 Diamonds lists it at HK$12,753. 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
Colour
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

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: HK$12,753 HKD|Low: HK$8,528 HKD|High: HK$12,881 HKD|Avg: HK$10,696 HKD|+1.5%
77 Diamonds
Retailer 2
November 1, 2026
Retailer 2HK$8,654 HKD
77 DiamondsHK$12,753 HKD

34 data points across 2 retailers

2 retailersHK$8,654 HKD to HK$12,753 HKD

B
Cheapest Retailer
-
HK$8,654 HKD
$1,103 USD
Most Expensive
B
77 Diamonds
RADZVSHGMDFT · Nov 1
HK$12,753 HKD
£1,280 GBP
View
1 more retailer has this diamond
Prices start from HK$8,654 HKDSave up to HK$4,099 HKD

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
HK$8,654 HKD