Round|Natural|GIA

1.51ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 6535966035

Certificate GIA 6535966035

Diamond specifications and retailer prices

From HK$28,456 HKD
$3,627 USD
As of October 28, 2026
Save HK$25,927 HKD (48%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: HK$57,791 HKD at NZ Jewellers · As of October 20, 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 6535966035. Listed at 19 retailers as of October 28, 2026, with a 91% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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 angle35.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 6535966035
Dimensions7.34 × 7.30 × 4.54 mm
L/W Ratio1.01
Top View
7.34 mm7.30 mm1.51 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6535966035
Side View
Table 59.0%Crown 35.5°Girdle: MED-SLIPavilion 41°Culet: NoneDepth 62.0%

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: Oct 28
Current: HK$57,791 HKD|Low: HK$28,456 HKD|High: HK$59,227 HKD|Avg: HK$37,395 HKD|-2.4%
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
October 29, 2026
Retailer 14HK$28,456 HKD
Retailer 13HK$29,578 HKD
Retailer 5HK$29,696 HKD
Retailer 17HK$29,853 HKD
Retailer 15HK$29,931 HKD
Retailer 16HK$32,403 HKD
Retailer 10HK$32,882 HKD
Retailer 7HK$33,172 HKD
Retailer 8HK$33,580 HKD
Retailer 9HK$33,580 HKD
Retailer 4HK$34,333 HKD
Retailer 2HK$36,700 HKD
Retailer 11HK$38,860 HKD
Retailer 6HK$39,221 HKD
Retailer 3HK$40,392 HKD
Retailer 12HK$54,384 HKD
NZ JewellersHK$57,791 HKD

18 data points across 17 retailers

19 retailersHK$28,456 HKD to HK$54,384 HKD

A
Cheapest Retailer
-
HK$28,456 HKD
$3,627 USD
A
Retailer 2
-
HK$29,578 HKD
$3,770 USD
View
Retailer 3
-
HK$29,696 HKD
$3,785 USD
View
Price last confirmed 7 days ago
A
Retailer 4
-
HK$29,853 HKD
$3,805 USD
View
Final sale: no returns
A
Retailer 5
-
HK$29,931 HKD
$3,815 USD
View
B+
Retailer 6
-
HK$32,403 HKD
$4,130 USD
View
B+
Retailer 7
-
HK$32,882 HKD
£3,300 GBP
View
Retailer 8
-
HK$33,172 HKD
$4,228 USD
View
Price last confirmed 12 days ago
Retailer 9
-
HK$33,580 HKD
$4,280 USD
View
Price last confirmed 16 days ago
Retailer 10
-
HK$33,580 HKD
$4,280 USD
View
Price last confirmed 17 days ago
Retailer 11
-
HK$34,090 HKD
$4,345 USD
View
Price last confirmed 7 days ago
B+
Retailer 12
-
HK$34,333 HKD
$4,376 USD
View
B+
Retailer 13
-
HK$36,700 HKD
€4,455 EUR
View
Retailer 14
-
HK$37,138 HKD
A$7,282 AUD
View
Price last confirmed 23 days ago
B+
Retailer 15
-
HK$38,860 HKD
£3,900 GBP
View
Retailer 16
-
HK$39,221 HKD
$4,999 USD
View
Price last confirmed 11 days ago
B+
Retailer 17
-
HK$40,392 HKD
ZAR 83,171 ZAR
View
B
Retailer 18
-
HK$54,384 HKD
£5,458 GBP
View
Most Expensive
NZ Jewellers
0aa1fd7c-629a-41b2-8cb9-a1e3205f0648 · Oct 20
HK$57,791 HKD
$7,366 USD
View
Price last confirmed 12 days ago
18 more retailers have this diamond
Prices start from HK$28,456 HKDSave up to HK$25,927 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$28,456 HKD