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Radiant|Natural|GIA

1.51ct H SI2 Radiant Natural Diamond

EX • H/SI2 • GIA 1555665977

Certificate GIA 1555665977

Diamond specifications and retailer prices

From HK$36,428 HKD
$4,643 USD
As of November 1, 2026
Save HK$35,580 HKD (49%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: HK$72,008 HKD at NZ Jewellers · As of October 30, 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 H 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 1555665977. Listed at 15 retailers as of October 30, 2026, with prices from HK$36,428 to HK$72,008, a HK$35,580 spread on the same certified stone. NZ Jewellers lists it at HK$72,008. 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
H
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.22°
OriginNatural
Grading LabGIA
CertificateGIA 1555665977
Dimensions7.78 × 5.83 × 3.99 mm
L/W Ratio1.33
Culet sizeNone
Key to symbols
Crystal, Cloud
Top View
7.78 mm5.83 mm1.51 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1555665977
Side View
Table 68.0%Crown 43.22°Girdle: Slightly ThickPavilionCulet: NoneDepth 68.4%

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 1
Current: HK$72,008 HKD|Low: HK$35,290 HKD|High: HK$76,676 HKD|Avg: HK$48,563 HKD|-6.1%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 2, 2026
Retailer 4HK$36,428 HKD
Retailer 14HK$37,550 HKD
Retailer 3HK$39,738 HKD
Retailer 2HK$41,708 HKD
Retailer 8HK$42,006 HKD
Retailer 5HK$43,049 HKD
Retailer 6HK$43,049 HKD
Retailer 12HK$43,049 HKD
Retailer 13HK$44,260 HKD
Retailer 11HK$45,042 HKD
Retailer 7HK$48,711 HKD
Retailer 10HK$49,679 HKD
Retailer 9HK$68,573 HKD
NZ JewellersHK$72,008 HKD

26 data points across 14 retailers

15 retailersHK$36,428 HKD to HK$72,008 HKD

A
Cheapest Retailer
-
HK$36,428 HKD
$4,643 USD
A
Retailer 2
-
HK$37,550 HKD
$4,786 USD
View
A
Retailer 3
-
HK$39,738 HKD
$5,065 USD
View
Final sale: no returns
A
Retailer 4
-
HK$41,708 HKD
£4,186 GBP
View
A
Retailer 5
-
HK$42,006 HKD
£4,216 GBP
View
A
Retailer 6
-
HK$43,049 HKD
$5,487 USD
View
A
Retailer 7
-
HK$43,049 HKD
$5,487 USD
View
A
Retailer 8
-
HK$43,049 HKD
$5,487 USD
View
A
Retailer 9
-
HK$44,260 HKD
$5,641 USD
View
B+
Retailer 10
-
HK$45,042 HKD
$5,741 USD
View
B+
Retailer 11
-
HK$48,711 HKD
€5,913 EUR
View
B+
Retailer 12
-
HK$49,679 HKD
$6,332 USD
View
Retailer 13
-
HK$50,212 HKD
$6,400 USD
View
Price last confirmed 12 days ago
B
Retailer 14
-
HK$68,573 HKD
£6,882 GBP
View
Most Expensive
B
NZ Jewellers
4550dc16-0292-4ea4-b8e9-ba98c68b4e06 · Oct 30
HK$72,008 HKD
$9,178 USD
View
14 more retailers have this diamond
Prices start from HK$36,428 HKDSave up to HK$35,580 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$36,428 HKD