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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 $4,004 NZD
HK$17,600 HKD
As of November 2, 2026
Save $4,880 NZD (55%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $8,884 NZD 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 $4,004 to $8,884, a $4,880 spread on the same certified stone. MOH London lists it at $8,884. 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: $8,884 NZD|Low: $3,936 NZD|High: $9,656 NZD|Avg: $5,606 NZD|-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$4,004 NZD
Retailer 4$4,029 NZD
Retailer 3$4,361 NZD
Retailer 17$4,440 NZD
Retailer 7$4,446 NZD
Retailer 6$4,852 NZD
Retailer 10$4,854 NZD
Retailer 2$4,890 NZD
Retailer 16$4,927 NZD
Retailer 11$5,012 NZD
Retailer 14$5,111 NZD
Retailer 18$5,180 NZD
Retailer 8$5,405 NZD
Retailer 12$5,456 NZD
Retailer 15$6,216 NZD
Retailer 5$6,711 NZD
Retailer 9$8,644 NZD
MOH London$8,884 NZD

20 data points across 18 retailers

20 retailers$4,004 NZD to $8,884 NZD

A
Cheapest Retailer
-
$4,004 NZD
HK$17,600 HKD
A
Retailer 2
-
$4,029 NZD
$2,267 USD
View
A
Retailer 3
-
$4,361 NZD
$2,454 USD
View
A
Retailer 4
-
$4,440 NZD
$2,498 USD
View
Final sale: no returns
A
Retailer 5
-
$4,446 NZD
$2,502 USD
View
A
Retailer 6
-
$4,852 NZD
$2,730 USD
View
A
Retailer 7
-
$4,854 NZD
$2,731 USD
View
A
Retailer 8
-
$4,890 NZD
A$4,233 AUD
View
A
Retailer 9
-
$4,927 NZD
$2,772 USD
View
A
Retailer 10
-
$5,012 NZD
$2,820 USD
View
A
Retailer 11
-
$5,111 NZD
£2,264 GBP
View
A
Retailer 12
-
$5,180 NZD
£2,295 GBP
View
Retailer 13
-
$5,405 NZD
$3,041 USD
View
Price last confirmed 13 days ago
A
Retailer 14
-
$5,456 NZD
$3,070 USD
View
B+
Retailer 15
-
$6,155 NZD
A$5,328 AUD
View
B+
Retailer 16
-
$6,216 NZD
€3,331 EUR
View
Retailer 17
-
$6,253 NZD
A$5,413 AUD
View
Price last confirmed 25 days ago
B+
Retailer 18
-
$6,711 NZD
ZAR 61,001 ZAR
View
Retailer 19
-
$8,644 NZD
$4,863 USD
View
Price last confirmed 9 days ago
Most Expensive
B+
MOH London
F1C44731E · Nov 2
$8,884 NZD
£3,936 GBP
View
19 more retailers have this diamond
Prices start from $4,004 NZDSave up to $4,880 NZD

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
$4,004 NZD