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Round|Natural|GIA

1.51ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 6442857890

Certificate GIA 6442857890

Diamond specifications and retailer prices

From HK$23,700 HKD
As of November 1, 2026
Save HK$31,926 HKD (57%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: HK$55,626 HKD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6442857890. Listed at 17 retailers as of October 30, 2026, with prices from HK$23,700 to HK$55,626, a HK$31,926 spread on the same certified stone. NZ Jewellers lists it at HK$55,626. 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
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 6442857890
Dimensions7.47 × 7.44 × 4.53 mm
L/W Ratio1.00
Star length45%
Lower girdle80%
Top View
7.47 mm7.44 mm1.51 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6442857890
Side View
Table 59.0%Crown 32°Girdle: MED-NULPavilion 41.8°Culet: NoneDepth 60.8%

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$55,626 HKD|Low: HK$23,499 HKD|High: HK$56,128 HKD|Avg: HK$34,791 HKD|-0.9%
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
Retailer 15
November 1, 2026
Retailer 10HK$23,700 HKD
Retailer 5HK$27,264 HKD
Retailer 7HK$28,166 HKD
Retailer 14HK$29,468 HKD
Retailer 4HK$29,929 HKD
Retailer 6HK$31,932 HKD
Retailer 11HK$31,932 HKD
Retailer 13HK$31,932 HKD
Retailer 9HK$32,458 HKD
Retailer 12HK$33,085 HKD
Retailer 2HK$35,975 HKD
Retailer 15HK$36,468 HKD
Retailer 3HK$36,843 HKD
Retailer 8HK$53,397 HKD
NZ JewellersHK$55,626 HKD

32 data points across 15 retailers

17 retailersHK$23,700 HKD to HK$55,626 HKD

A
Cheapest Retailer
-
HK$23,700 HKD
A
Retailer 2
-
HK$27,264 HKD
$3,475 USD
View
A
Retailer 3
-
HK$28,166 HKD
$3,590 USD
View
B+
Retailer 4
-
HK$29,468 HKD
$3,756 USD
View
Final sale: no returns
A
Retailer 5
-
HK$29,929 HKD
SGD 5,155 SGD
View
B+
Retailer 6
-
HK$30,384 HKD
A$5,958 AUD
View
Retailer 7
-
HK$30,626 HKD
$3,904 USD
View
Price last confirmed 104 days ago
B+
Retailer 8
-
HK$31,932 HKD
$4,070 USD
View
B+
Retailer 9
-
HK$31,932 HKD
$4,070 USD
View
B+
Retailer 10
-
HK$31,932 HKD
$4,070 USD
View
B+
Retailer 11
-
HK$32,458 HKD
£3,258 GBP
View
B+
Retailer 12
-
HK$33,085 HKD
$4,217 USD
View
B+
Retailer 13
-
HK$35,975 HKD
€4,367 EUR
View
B+
Retailer 14
-
HK$36,468 HKD
£3,660 GBP
View
B+
Retailer 15
-
HK$36,843 HKD
$4,696 USD
View
B
Retailer 16
-
HK$53,397 HKD
£5,359 GBP
View
Most Expensive
B
NZ Jewellers
a69f990f-567b-4bf7-a2aa-d4fef9127bd3 · Oct 30
HK$55,626 HKD
$7,090 USD
View
16 more retailers have this diamond
Prices start from HK$23,700 HKDSave up to HK$31,926 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 Round
HK$23,700 HKD