CaratHunter
Plans
Cushion|Natural|GIA

1.51ct I SI2 Cushion Natural Diamond

EX • I/SI2 • GIA 6551796873

Certificate GIA 6551796873

Diamond specifications and retailer prices

From $3,378 SGD
As of November 6, 2026
Save $4,394 SGD (57%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $7,772 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6551796873. Listed at 8 retailers as of November 2, 2026, with prices from $3,378 to $7,772, a $4,394 spread on the same certified stone. MOH London lists it at $7,772. 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
I
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle35.97°
OriginNatural
Grading LabGIA
CertificateGIA 6551796873
Dimensions7.56 × 5.87 × 4.09 mm
L/W Ratio1.29
Key to symbols
Crystal, Cloud, Feather, Knot, Needle
Top View
7.56 mm5.87 mm1.51 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6551796873
Side View
Table 64.0%CrownGirdle: MED-VTKPavilion 35.97°Culet: NoneDepth 69.7%

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 6
Current: $7,772 SGD|Low: $3,378 SGD|High: $8,586 SGD|Avg: $5,206 SGD|-9.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 2$3,378 SGD
Retailer 7$4,202 SGD
Retailer 3$4,439 SGD
Retailer 5$4,702 SGD
Retailer 6$4,926 SGD
Retailer 4$5,442 SGD
MOH London$7,772 SGD

43 data points across 7 retailers

8 retailers$3,378 SGD to $7,772 SGD

A
Cheapest Retailer
-
$3,378 SGD
A
Retailer 2
-
$4,202 SGD
View
A
Retailer 3
-
$4,439 SGD
View
A
Retailer 4
-
$4,702 SGD
View
A
Retailer 5
-
$4,926 SGD
View
A
Retailer 6
-
$5,121 SGD
View
A
Retailer 7
-
$5,442 SGD
View
Most Expensive
B
MOH London
FA73139D7 · Nov 2
$7,772 SGD
£4,775 GBP
View
7 more retailers have this diamond
Prices start from $3,378 SGDSave up to $4,394 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
$3,378 SGD