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Round|Natural|GIA

1.51ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 6425906823

Certificate GIA 6425906823

Diamond specifications and retailer prices

From HK$37,659 HKD
As of November 1, 2026
Save HK$47,914 HKD (56%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: HK$85,573 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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6425906823. Listed at 19 retailers as of October 30, 2026, with prices from HK$37,659 to HK$85,573, a HK$47,914 spread on the same certified stone. NZ Jewellers lists it at HK$85,573. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6425906823
Dimensions7.31 × 7.27 × 4.55 mm
L/W Ratio1.01
Top View
7.31 mm7.27 mm1.51 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6425906823
Side View
Table 58.0%Crown 36°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.4%

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 1
Current: HK$85,573 HKD|Low: HK$37,024 HKD|High: HK$85,573 HKD|Avg: HK$53,143 HKD
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
Retailer 16
Retailer 17
Retailer 18
Retailer 19
November 2, 2026
Retailer 15HK$37,659 HKD
Retailer 18HK$40,484 HKD
Retailer 5HK$42,783 HKD
Retailer 16HK$43,151 HKD
Retailer 6HK$46,352 HKD
Retailer 8HK$46,352 HKD
Retailer 19HK$46,352 HKD
Retailer 2HK$48,346 HKD
Retailer 7HK$51,703 HKD
Retailer 9HK$51,703 HKD
Retailer 11HK$51,719 HKD
Retailer 10HK$52,398 HKD
Retailer 17HK$53,429 HKD
Retailer 3HK$53,484 HKD
Retailer 12HK$55,656 HKD
Retailer 4HK$56,403 HKD
Retailer 14HK$62,863 HKD
Retailer 13HK$75,378 HKD
NZ JewellersHK$85,573 HKD

43 data points across 19 retailers

19 retailersHK$37,659 HKD to HK$85,573 HKD

B+
Cheapest Retailer
-
HK$37,659 HKD
B+
Retailer 2
-
HK$40,484 HKD
$5,160 USD
View
B
Retailer 3
-
HK$42,783 HKD
$5,453 USD
View
Final sale: no returns
B
Retailer 4
-
HK$43,151 HKD
$5,500 USD
View
B
Retailer 5
-
HK$46,352 HKD
$5,908 USD
View
B
Retailer 6
-
HK$46,352 HKD
$5,908 USD
View
B
Retailer 7
-
HK$46,352 HKD
$5,908 USD
View
B+
Retailer 8
-
HK$48,346 HKD
£4,852 GBP
View
B
Retailer 9
-
HK$51,703 HKD
$6,590 USD
View
B
Retailer 10
-
HK$51,703 HKD
$6,590 USD
View
Retailer 11
-
HK$51,719 HKD
A$10,142 AUD
View
Price last confirmed 29 days ago
B
Retailer 12
-
HK$52,398 HKD
$6,679 USD
View
B
Retailer 13
-
HK$53,429 HKD
$6,810 USD
View
B
Retailer 14
-
HK$53,484 HKD
$6,817 USD
View
B
Retailer 15
-
HK$55,656 HKD
€6,756 EUR
View
Retailer 16
-
HK$56,403 HKD
$7,189 USD
View
Price last confirmed 10 days ago
B
Retailer 17
-
HK$62,863 HKD
ZAR 129,441 ZAR
View
B
Retailer 18
-
HK$75,378 HKD
£7,565 GBP
View
Most Expensive
B
NZ Jewellers
69390dd0-34a5-44b5-99bc-6831c853a27d · Oct 30
HK$85,573 HKD
$10,907 USD
View
18 more retailers have this diamond
Prices start from HK$37,659 HKDSave up to HK$47,914 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+
1.51ct Round
HK$37,659 HKD