Cushion|Natural|GIA

1.51ct J SI1 Cushion Natural Diamond

EX • J/SI1 • GIA 2516339828

Certificate GIA 2516339828

Diamond specifications and retailer prices

From HK$32,726 HKD
$4,171 USD
As of November 2, 2026
Save HK$36,079 HKD (52%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: HK$68,805 HKD at MOH London · As of November 1, 2026
View at MOH London

About this 1.51ct natural cushion diamond

This 1.51ct natural cushion 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 2516339828. Listed at 25 retailers as of November 1, 2026, with prices from HK$32,726 to HK$68,805, a HK$36,079 spread on the same certified stone. MOH London lists it at HK$68,805. 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 (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.63°
Pavilion angle36.01°
OriginNatural
Grading LabGIA
CertificateGIA 2516339828
Dimensions7.68 × 5.91 × 4.11 mm
L/W Ratio1.30
Top View
7.68 mm5.91 mm1.51 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2516339828
Side View
Table 64.0%Crown 38.63°Girdle: STK-VTKPavilion 36.01°Culet: NoneDepth 69.5%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: HK$68,805 HKD|Low: HK$31,282 HKD|High: HK$69,632 HKD|Avg: HK$44,207 HKD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 10HK$32,726 HKD
Retailer 7HK$34,413 HKD
Retailer 11HK$36,837 HKD
Retailer 8HK$39,136 HKD
Retailer 9HK$41,176 HKD
Retailer 4HK$42,148 HKD
Retailer 6HK$43,267 HKD
Retailer 3HK$47,673 HKD
Retailer 2HK$48,870 HKD
Retailer 5HK$53,100 HKD
MOH LondonHK$68,805 HKD

43 data points across 11 retailers

25 retailersHK$32,726 HKD to HK$68,805 HKD

B+
Cheapest Retailer
-
HK$32,726 HKD
$4,171 USD
B+
Retailer 2
-
HK$33,746 HKD
$4,301 USD
View
B+
Retailer 3
-
HK$34,131 HKD
$4,350 USD
View
B+
Retailer 4
-
HK$34,413 HKD
$4,386 USD
View
Final sale: no returns
B+
Retailer 5
-
HK$34,548 HKD
$4,403 USD
View
B
Retailer 6
-
HK$35,630 HKD
A$6,986 AUD
View
B
Retailer 7
-
HK$36,689 HKD
CA$6,495 CAD
View
B
Retailer 8
-
HK$36,759 HKD
$4,685 USD
View
B
Retailer 9
-
HK$36,837 HKD
$4,695 USD
View
B+
Retailer 10
-
HK$38,776 HKD
$4,942 USD
View
B
Retailer 11
-
HK$39,136 HKD
$4,988 USD
View
B
Retailer 12
-
HK$39,811 HKD
$5,074 USD
View
B
Retailer 13
-
HK$41,176 HKD
$5,248 USD
View
B
Retailer 14
-
HK$41,231 HKD
$5,255 USD
View
B
Retailer 15
-
HK$42,148 HKD
£4,230 GBP
View
Retailer 16
-
HK$43,267 HKD
A$8,484 AUD
View
Price last confirmed 23 days ago
B
Retailer 17
-
HK$43,860 HKD
$5,590 USD
View
B
Retailer 18
-
HK$43,860 HKD
$5,590 USD
View
B
Retailer 19
-
HK$45,272 HKD
$5,770 USD
View
Retailer 20
-
HK$47,673 HKD
$6,076 USD
View
Price last confirmed 10 days ago
B
Retailer 21
-
HK$48,870 HKD
€5,932 EUR
View
B
Retailer 22
-
HK$49,760 HKD
$6,342 USD
View
B
Retailer 23
-
HK$53,100 HKD
ZAR 109,332 ZAR
View
B
Retailer 24
-
HK$62,555 HKD
$7,973 USD
View
Most Expensive
B
MOH London
66A04432A · Nov 1
HK$68,805 HKD
£6,905 GBP
View
24 more retailers have this diamond
Prices start from HK$32,726 HKDSave up to HK$36,079 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 Cushion
HK$32,726 HKD