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Radiant|Natural|GIA

1.51ct J SI1 Radiant Natural Diamond

ID • J/SI1 • GIA 1236729301

Certificate GIA 1236729301

Diamond specifications and retailer prices

From HK$21,184 HKD
As of November 2, 2026
Save HK$24,860 HKD (54%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: HK$46,045 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1236729301. Listed at 8 retailers as of November 2, 2026, with prices from HK$21,184 to HK$46,045, a HK$24,860 spread on the same certified stone. NZ Jewellers lists it at HK$46,045. 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
J
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceStrong
Crown angle44.89°
Pavilion angle31.06°
OriginNatural
Grading LabGIA
CertificateGIA 1236729301
Dimensions7.31 × 5.60 × 3.89 mm
L/W Ratio1.31
Girdle conditionVery Thick
Key to symbols
Crystal, Feather, Needle, Indented Natural
Top View
7.31 mm5.60 mm1.51 ctJ / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 1236729301
Side View
Table 67.0%Crown 44.89°Girdle: ThickPavilion 31.06°Culet: NoneDepth 69.6%

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 2
Current: HK$46,045 HKD|Low: HK$21,177 HKD|High: HK$47,957 HKD|Avg: HK$28,137 HKD|-4.0%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 3HK$21,184 HKD
Retailer 5HK$21,592 HKD
Retailer 7HK$22,023 HKD
Retailer 4HK$22,870 HKD
Retailer 6HK$23,183 HKD
Retailer 8HK$24,923 HKD
Retailer 10HK$25,957 HKD
Retailer 9HK$27,188 HKD
Retailer 2HK$38,584 HKD
NZ JewellersHK$46,045 HKD

35 data points across 10 retailers

8 retailersHK$21,184 HKD to HK$46,045 HKD

A
Cheapest Retailer
-
HK$21,184 HKD
A
Retailer 2
-
HK$21,592 HKD
View
A
Retailer 3
-
HK$22,023 HKD
View
A
Retailer 4
-
HK$22,870 HKD
View
Retailer 5
-
HK$23,183 HKD
View
Price last confirmed 9 days ago
Retailer 6
-
HK$24,923 HKD
View
Price last confirmed 31 days ago
B+
Retailer 7
-
HK$38,584 HKD
View
Most Expensive
B
NZ Jewellers
ba55ec91-1321-4ed6-b548-4f3c073efa7c · Nov 3
HK$46,045 HKD
$5,875 USD
View
7 more retailers have this diamond
Prices start from HK$21,184 HKDSave up to HK$24,860 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$21,184 HKD