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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 $2,881 SGD
HK$17,600 HKD
As of November 2, 2026
Save $3,512 SGD (55%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $6,393 SGD at MOH London · As of November 2, 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 2, 2026, with prices from $2,881 to $6,393, a $3,512 spread on the same certified stone. MOH London lists it at $6,393. 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
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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $6,393 SGD|Low: $2,832 SGD|High: $6,948 SGD|Avg: $4,034 SGD|-8.0%
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 13$2,881 SGD
Retailer 4$2,899 SGD
Retailer 3$3,138 SGD
Retailer 17$3,195 SGD
Retailer 7$3,199 SGD
Retailer 6$3,491 SGD
Retailer 10$3,493 SGD
Retailer 2$3,519 SGD
Retailer 16$3,545 SGD
Retailer 11$3,606 SGD
Retailer 14$3,677 SGD
Retailer 18$3,727 SGD
Retailer 8$3,889 SGD
Retailer 12$3,926 SGD
Retailer 15$4,473 SGD
Retailer 5$4,829 SGD
Retailer 9$6,220 SGD
MOH London$6,393 SGD

20 data points across 18 retailers

20 retailers$2,881 SGD to $6,393 SGD

A
Cheapest Retailer
-
$2,881 SGD
HK$17,600 HKD
A
Retailer 2
-
$2,899 SGD
$2,267 USD
View
A
Retailer 3
-
$3,138 SGD
$2,454 USD
View
A
Retailer 4
-
$3,195 SGD
$2,498 USD
View
Final sale: no returns
A
Retailer 5
-
$3,199 SGD
$2,502 USD
View
A
Retailer 6
-
$3,491 SGD
$2,730 USD
View
A
Retailer 7
-
$3,493 SGD
$2,731 USD
View
A
Retailer 8
-
$3,519 SGD
A$4,233 AUD
View
A
Retailer 9
-
$3,545 SGD
$2,772 USD
View
A
Retailer 10
-
$3,606 SGD
$2,820 USD
View
A
Retailer 11
-
$3,677 SGD
£2,264 GBP
View
A
Retailer 12
-
$3,727 SGD
£2,295 GBP
View
Retailer 13
-
$3,889 SGD
$3,041 USD
View
Price last confirmed 13 days ago
A
Retailer 14
-
$3,926 SGD
$3,070 USD
View
B+
Retailer 15
-
$4,429 SGD
A$5,328 AUD
View
B+
Retailer 16
-
$4,473 SGD
€3,331 EUR
View
Retailer 17
-
$4,499 SGD
A$5,413 AUD
View
Price last confirmed 25 days ago
B+
Retailer 18
-
$4,829 SGD
ZAR 61,001 ZAR
View
Retailer 19
-
$6,220 SGD
$4,863 USD
View
Price last confirmed 9 days ago
Most Expensive
B+
MOH London
F1C44731E · Nov 2
$6,393 SGD
£3,936 GBP
View
19 more retailers have this diamond
Prices start from $2,881 SGDSave up to $3,512 SGD

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
$2,881 SGD