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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 $8,843 NZD
As of November 6, 2026
Save $8,571 NZD (49%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $17,414 NZD at MOH London · As of November 7, 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 6, 2026, with prices from $8,843 to $17,414, a $8,571 spread on the same certified stone. MOH London lists it at $17,414. 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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $17,414 NZD|Low: $8,843 NZD|High: $19,058 NZD|Avg: $12,038 NZD|-8.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 7, 2026
Retailer 5$8,843 NZD
Retailer 2$9,826 NZD
Retailer 4$10,048 NZD
Retailer 6$10,571 NZD
Retailer 8$10,713 NZD
Retailer 7$11,246 NZD
Retailer 3$13,021 NZD
MOH London$17,414 NZD

42 data points across 8 retailers

8 retailers$8,843 NZD to $17,414 NZD

A
Cheapest Retailer
-
$8,843 NZD
A
Retailer 2
-
$9,826 NZD
View
Retailer 3
-
$10,048 NZD
View
Price last confirmed 3 days ago
B+
Retailer 4
-
$10,571 NZD
View
Retailer 5
-
$10,713 NZD
View
Price last confirmed 24 days ago
B+
Retailer 6
-
$11,246 NZD
View
Final sale: no returns
B+
Retailer 7
-
$13,021 NZD
View
Most Expensive
B
MOH London
4AF0B12A7 · Nov 7
$17,414 NZD
£7,601 GBP
View
7 more retailers have this diamond
Prices start from $8,843 NZDSave up to $8,571 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
$8,843 NZD