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Cushion|Natural|GIA

1.51ct J SI1 Cushion Natural Diamond

EX • J/SI1 • GIA 1236988663

Certificate GIA 1236988663

Diamond specifications and retailer prices

From $3,148 CAD
HK$17,600 HKD
As of November 2, 2026
Save $3,708 CAD (54%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $6,856 CAD 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 1236988663. Listed at 20 retailers as of November 1, 2026, with prices from $3,148 to $6,856, a $3,708 spread on the same certified stone. MOH London lists it at $6,856. 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
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1236988663
Dimensions7.23 × 5.78 × 3.97 mm
L/W Ratio1.25
Girdle conditionFaceted
Top View
7.23 mm5.78 mm1.51 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1236988663
Side View
Table 67.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 68.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $6,856 CAD|Low: $3,094 CAD|High: $7,592 CAD|Avg: $4,406 CAD|-9.7%
MOH London
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
November 2, 2026
Retailer 11$3,148 CAD
Retailer 4$3,168 CAD
Retailer 17$3,429 CAD
Retailer 15$3,491 CAD
Retailer 7$3,496 CAD
Retailer 3$3,783 CAD
Retailer 6$3,815 CAD
Retailer 10$3,816 CAD
Retailer 18$3,871 CAD
Retailer 14$3,874 CAD
Retailer 12$4,018 CAD
Retailer 16$4,073 CAD
Retailer 8$4,249 CAD
Retailer 2$4,290 CAD
Retailer 13$4,887 CAD
Retailer 5$5,277 CAD
Retailer 9$6,796 CAD
MOH London$6,856 CAD

21 data points across 18 retailers

20 retailers$3,148 CAD to $6,856 CAD

A
Cheapest Retailer
-
$3,148 CAD
HK$17,600 HKD
A
Retailer 2
-
$3,168 CAD
$2,267 USD
View
A
Retailer 3
-
$3,429 CAD
$2,454 USD
View
A
Retailer 4
-
$3,491 CAD
$2,498 USD
View
Final sale: no returns
A
Retailer 5
-
$3,496 CAD
$2,502 USD
View
A
Retailer 6
-
$3,783 CAD
A$4,165 AUD
View
A
Retailer 7
-
$3,815 CAD
$2,730 USD
View
A
Retailer 8
-
$3,816 CAD
$2,731 USD
View
A
Retailer 9
-
$3,871 CAD
$2,770 USD
View
A
Retailer 10
-
$3,874 CAD
$2,772 USD
View
A
Retailer 11
-
$4,018 CAD
£2,264 GBP
View
A
Retailer 12
-
$4,073 CAD
£2,295 GBP
View
Retailer 13
-
$4,249 CAD
$3,041 USD
View
Price last confirmed 13 days ago
A
Retailer 14
-
$4,290 CAD
$3,070 USD
View
B+
Retailer 15
-
$4,839 CAD
A$5,328 AUD
View
B+
Retailer 16
-
$4,887 CAD
€3,331 EUR
View
Retailer 17
-
$4,916 CAD
A$5,413 AUD
View
Price last confirmed 25 days ago
B+
Retailer 18
-
$5,277 CAD
ZAR 61,001 ZAR
View
Retailer 19
-
$6,796 CAD
$4,863 USD
View
Price last confirmed 9 days ago
Most Expensive
B+
MOH London
F1C44731E · Nov 1
$6,856 CAD
£3,863 GBP
View
19 more retailers have this diamond
Prices start from $3,148 CADSave up to $3,708 CAD

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 Cushion
$3,148 CAD