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Radiant|Natural|GIA

0.51ct I SI2 Radiant Natural Diamond

EX • I/SI2 • GIA 2215619618

Certificate GIA 2215619618

Diamond specifications and retailer prices

From HK$5,579 HKD
$711 USD
As of November 2, 2026
Save HK$3,883 HKD (41%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: HK$9,461 HKD at 77 Diamonds · As of November 2, 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2215619618. Listed at 6 retailers as of November 2, 2026, with prices from HK$5,579 to HK$9,461, a HK$3,883 spread on the same certified stone. 77 Diamonds lists it at HK$9,461. 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
I
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2215619618
Dimensions5.87 × 3.85 × 2.58 mm
L/W Ratio1.52
Culet sizeNone
Top View
5.87 mm3.85 mm0.51 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2215619618
Side View
Table 70.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 66.9%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: HK$9,461 HKD|Low: HK$5,069 HKD|High: HK$9,557 HKD|Avg: HK$7,621 HKD|+0.1%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 2, 2026
Retailer 2HK$5,579 HKD
Retailer 5HK$6,528 HKD
Retailer 4HK$8,003 HKD
Retailer 6HK$8,003 HKD
Retailer 3HK$8,238 HKD
77 DiamondsHK$9,461 HKD

37 data points across 6 retailers

6 retailersHK$5,579 HKD to HK$9,461 HKD

B+
Cheapest Retailer
-
HK$5,579 HKD
$711 USD
Final sale: no returns
B+
Retailer 2
-
HK$6,528 HKD
$832 USD
View
B
Retailer 3
-
HK$8,003 HKD
$1,020 USD
View
B
Retailer 4
-
HK$8,003 HKD
$1,020 USD
View
B
Retailer 5
-
HK$8,238 HKD
$1,050 USD
View
Most Expensive
B
77 Diamonds
RADMB5PMVXPDB · Nov 2
HK$9,461 HKD
£950 GBP
View
5 more retailers have this diamond
Prices start from HK$5,579 HKDSave up to HK$3,883 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$5,579 HKD