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Cushion|Natural|GIA

2.51ct H SI1 Cushion Natural Diamond

ID • H/SI1 • GIA 2546435877

Certificate GIA 2546435877

Diamond specifications and retailer prices

From $31,644 NZD
As of November 3, 2026
Save $20,159 NZD (39%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $51,803 NZD at MOH London · As of November 2, 2026
View at MOH London

About this 2.51ct natural cushion diamond

This 2.51ct natural cushion sits in the two to three carat band, graded H 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 2546435877. Listed at 12 retailers as of November 2, 2026, with prices from $31,644 to $51,803, a $20,159 spread on the same certified stone. MOH London lists it at $51,803. 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

2.51
Carat
H
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 2546435877
Dimensions8.67 × 6.94 × 4.76 mm
L/W Ratio1.25
Top View
8.67 mm6.94 mm2.51 ctH / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 2546435877
Side View
Table 61.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 68.7%

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 3
Current: $51,803 NZD|Low: $31,447 NZD|High: $61,077 NZD|Avg: $43,354 NZD|-14.2%
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
November 5, 2026
Retailer 3$31,644 NZD
Retailer 7$34,527 NZD
Retailer 10$34,963 NZD
Retailer 11$36,309 NZD
Retailer 13$36,800 NZD
Retailer 14$36,800 NZD
Retailer 4$38,026 NZD
Retailer 12$38,999 NZD
Retailer 8$40,081 NZD
Retailer 9$40,234 NZD
Retailer 5$40,869 NZD
Retailer 2$42,264 NZD
Retailer 6$50,827 NZD
MOH London$51,803 NZD

26 data points across 14 retailers

12 retailers$31,644 NZD to $51,803 NZD

A
Cheapest Retailer
-
$31,644 NZD
A
Retailer 2
-
$34,527 NZD
View
B+
Retailer 3
-
$34,963 NZD
View
B+
Retailer 4
-
$36,309 NZD
View
B+
Retailer 5
-
$36,800 NZD
View
Retailer 6
-
$36,800 NZD
View
Price last confirmed 8 days ago
Retailer 7
-
$38,026 NZD
View
Price last confirmed 8 days ago
B+
Retailer 8
-
$38,999 NZD
View
B+
Retailer 9
-
$40,081 NZD
View
B+
Retailer 10
-
$40,234 NZD
View
B
Retailer 11
-
$42,264 NZD
View
Most Expensive
B
MOH London
F29B78666 · Nov 2
$51,803 NZD
£22,612 GBP
View
11 more retailers have this diamond
Prices start from $31,644 NZDSave up to $20,159 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
2.51ct Cushion
$31,644 NZD