Cushion|Natural|GIA

1.51ct J SI1 Cushion Natural Diamond

EX • J/SI1 • GIA 6555299261

Certificate GIA 6555299261

Diamond specifications and retailer prices

From $2,355 USD
As of November 5, 2026
Save $2,955 USD (56%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $5,310 USD at MOH London · As of November 4, 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 6555299261. Listed at 7 retailers as of November 4, 2026, with prices from $2,355 to $5,310, a $2,955 spread on the same certified stone. MOH London lists it at $5,310. 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 6555299261
Dimensions7.68 × 5.91 × 4.12 mm
L/W Ratio1.30
Key to symbols
Crystal, Feather, Pinpoint, Cloud, Needle
Top View
7.68 mm5.91 mm1.51 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6555299261
Side View
Table 65.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 69.6%

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 5
Current: $5,310 USD|Low: $2,355 USD|High: $6,044 USD|Avg: $3,535 USD|-12.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 4$2,355 USD
Retailer 6$2,715 USD
Retailer 5$2,934 USD
Retailer 7$3,041 USD
Retailer 3$3,267 USD
Retailer 2$3,820 USD
MOH London$5,310 USD

33 data points across 7 retailers

7 retailers$2,355 USD to $5,310 USD

A
Cheapest Retailer
-
$2,355 USD
A
Retailer 2
-
$2,715 USD
View
A
Retailer 3
-
$2,934 USD
View
A
Retailer 4
-
$3,041 USD
View
Final sale: no returns
A
Retailer 5
-
$3,267 USD
View
B+
Retailer 6
-
$3,820 USD
View
Most Expensive
B
MOH London
9F507C93D · Nov 4
$5,310 USD
£4,181 GBP
View
6 more retailers have this diamond
Prices start from $2,355 USDSave up to $2,955 USD

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
$2,355 USD