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Radiant|Natural|GIA

1.51ct I SI2 Radiant Natural Diamond

ID • I/SI2 • GIA 1518170862

Certificate GIA 1518170862

Diamond specifications and retailer prices

From HK$29,241 HKD
As of November 7, 2026
Save HK$26,600 HKD (48%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: HK$55,841 HKD at NZ Jewellers · As of November 3, 2026
View at NZ Jewellers

About this 1.51ct natural radiant diamond

This 1.51ct natural radiant sits in the one-and-a-half to two 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 1518170862. Listed at 7 retailers as of November 3, 2026, with prices from HK$29,241 to HK$55,841, a HK$26,600 spread on the same certified stone. NZ Jewellers lists it at HK$55,841. 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

1.51
Carat
I
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.77°
Pavilion angle31.26°
OriginNatural
Grading LabGIA
CertificateGIA 1518170862
Dimensions7.73 × 5.92 × 3.71 mm
L/W Ratio1.31
Girdle conditionSlightly Thick
Key to symbols
Crystal, Twinning Wisp, Feather, Needle
Top View
7.73 mm5.92 mm1.51 ctI / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1518170862
Side View
Table 70.0%Crown 44.77°Girdle: MediumPavilion 31.26°Culet: NoneDepth 62.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 7
Current: HK$55,841 HKD|Low: HK$29,241 HKD|High: HK$56,578 HKD|Avg: HK$38,645 HKD|-1.3%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 7, 2026
Retailer 3HK$29,241 HKD
Retailer 4HK$31,256 HKD
Retailer 2HK$32,047 HKD
Retailer 6HK$32,047 HKD
Retailer 7HK$33,168 HKD
Retailer 9HK$33,716 HKD
Retailer 8HK$36,554 HKD
Retailer 10HK$37,698 HKD
Retailer 5HK$53,592 HKD
NZ JewellersHK$55,841 HKD

35 data points across 10 retailers

7 retailersHK$29,241 HKD to HK$55,841 HKD

A
Cheapest Retailer
-
HK$29,241 HKD
A
Retailer 2
-
HK$31,256 HKD
View
A
Retailer 3
-
HK$32,047 HKD
View
A
Retailer 4
-
HK$32,047 HKD
View
A
Retailer 5
-
HK$33,168 HKD
View
B+
Retailer 6
-
HK$53,592 HKD
View
Most Expensive
B
NZ Jewellers
84c6226e-ee67-4228-a4df-b55c55477ffb · Nov 3
HK$55,841 HKD
$7,125 USD
View
6 more retailers have this diamond
Prices start from HK$29,241 HKDSave up to HK$26,600 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.

A
1.51ct Radiant
HK$29,241 HKD