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Cushion|Natural|GIA

1.51ct J SI1 Cushion Natural Diamond

EX • J/SI1 • GIA 2516339828

Certificate GIA 2516339828

Diamond specifications and retailer prices

From $5,952 AUD
$4,171 USD
As of November 2, 2026
Save $6,561 AUD (52%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $12,513 AUD 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 $5,952 to $12,513, a $6,561 spread on the same certified stone. MOH London lists it at $12,513. 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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $12,513 AUD|Low: $5,689 AUD|High: $12,663 AUD|Avg: $8,040 AUD
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 10$5,952 AUD
Retailer 7$6,258 AUD
Retailer 11$6,699 AUD
Retailer 8$7,117 AUD
Retailer 9$7,488 AUD
Retailer 4$7,665 AUD
Retailer 6$7,869 AUD
Retailer 3$8,670 AUD
Retailer 2$8,888 AUD
Retailer 5$9,657 AUD
MOH London$12,513 AUD

43 data points across 11 retailers

25 retailers$5,952 AUD to $12,513 AUD

B+
Cheapest Retailer
-
$5,952 AUD
$4,171 USD
B+
Retailer 2
-
$6,137 AUD
$4,301 USD
View
B+
Retailer 3
-
$6,207 AUD
$4,350 USD
View
B+
Retailer 4
-
$6,258 AUD
$4,386 USD
View
Final sale: no returns
B+
Retailer 5
-
$6,283 AUD
$4,403 USD
View
B
Retailer 6
-
$6,480 AUD
View
B
Retailer 7
-
$6,672 AUD
CA$6,495 CAD
View
B
Retailer 8
-
$6,685 AUD
$4,685 USD
View
B
Retailer 9
-
$6,699 AUD
$4,695 USD
View
B+
Retailer 10
-
$7,052 AUD
$4,942 USD
View
B
Retailer 11
-
$7,117 AUD
$4,988 USD
View
B
Retailer 12
-
$7,240 AUD
$5,074 USD
View
B
Retailer 13
-
$7,488 AUD
$5,248 USD
View
B
Retailer 14
-
$7,498 AUD
$5,255 USD
View
B
Retailer 15
-
$7,665 AUD
£4,230 GBP
View
Retailer 16
-
$7,869 AUD
View
Price last confirmed 23 days ago
B
Retailer 17
-
$7,976 AUD
$5,590 USD
View
B
Retailer 18
-
$7,976 AUD
$5,590 USD
View
B
Retailer 19
-
$8,233 AUD
$5,770 USD
View
Retailer 20
-
$8,670 AUD
$6,076 USD
View
Price last confirmed 10 days ago
B
Retailer 21
-
$8,888 AUD
€5,932 EUR
View
B
Retailer 22
-
$9,049 AUD
$6,342 USD
View
B
Retailer 23
-
$9,657 AUD
ZAR 109,332 ZAR
View
B
Retailer 24
-
$11,376 AUD
$7,973 USD
View
Most Expensive
B
MOH London
66A04432A · Nov 1
$12,513 AUD
£6,905 GBP
View
24 more retailers have this diamond
Prices start from $5,952 AUDSave up to $6,561 AUD

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
$5,952 AUD