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Cushion|Natural|GIA

1.51ct F SI1 Cushion Natural Diamond

EX • F/SI1 • GIA 2557433923

Certificate GIA 2557433923

Diamond specifications and retailer prices

From $6,282 SGD
As of November 6, 2026
Save $6,278 SGD (50%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $12,560 SGD 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 F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2557433923. Listed at 8 retailers as of November 4, 2026, with prices from $6,282 to $12,560, a $6,278 spread on the same certified stone. MOH London lists it at $12,560. 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
F
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2557433923
Dimensions7.67 × 6.00 × 4.15 mm
L/W Ratio1.28
Key to symbols
Crystal, Cloud, Feather, Needle
Top View
7.67 mm6.00 mm1.51 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2557433923
Side View
Table 63.0%CrownGirdle: STK-VTKPavilionCulet: NDepth 69.3%

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 6
Current: $12,560 SGD|Low: $6,282 SGD|High: $13,540 SGD|Avg: $8,563 SGD|-7.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 5$6,282 SGD
Retailer 2$6,981 SGD
Retailer 4$7,139 SGD
Retailer 6$7,510 SGD
Retailer 8$7,611 SGD
Retailer 7$7,989 SGD
Retailer 3$9,251 SGD
MOH London$12,560 SGD

41 data points across 8 retailers

8 retailers$6,282 SGD to $12,560 SGD

A
Cheapest Retailer
-
$6,282 SGD
A
Retailer 2
-
$6,981 SGD
View
A
Retailer 3
-
$7,139 SGD
View
Price last confirmed 3 days ago
B+
Retailer 4
-
$7,510 SGD
View
Retailer 5
-
$7,611 SGD
View
Price last confirmed 24 days ago
B+
Retailer 6
-
$7,989 SGD
View
Final sale: no returns
B+
Retailer 7
-
$9,251 SGD
View
Most Expensive
B
MOH London
4AF0B12A7 · Nov 4
$12,560 SGD
£7,717 GBP
View
7 more retailers have this diamond
Prices start from $6,282 SGDSave up to $6,278 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
$6,282 SGD