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Cushion|Natural|GIA

1.51ct D SI1 Cushion Natural Diamond

EX • D/SI1 • GIA 6511643903

Certificate GIA 6511643903

Diamond specifications and retailer prices

From $8,018 NZD
As of November 6, 2026
Save $5,782 NZD (42%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $13,801 NZD 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 D 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 6511643903. Listed at 11 retailers as of November 4, 2026, with prices from $8,018 to $13,801, a $5,782 spread on the same certified stone. MOH London lists it at $13,801. 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
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6511643903
Dimensions7.13 × 5.95 × 4.15 mm
L/W Ratio1.20
Top View
7.13 mm5.95 mm1.51 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6511643903
Side View
Table 69.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 69.8%

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: $13,801 NZD|Low: $8,018 NZD|High: $14,005 NZD|Avg: $9,689 NZD|-1.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 9$8,018 NZD
Retailer 2$8,083 NZD
Retailer 8$8,289 NZD
Retailer 5$8,554 NZD
Retailer 11$8,688 NZD
Retailer 10$8,758 NZD
Retailer 3$8,960 NZD
Retailer 4$9,777 NZD
Retailer 6$10,600 NZD
Retailer 7$12,007 NZD
MOH London$13,801 NZD

33 data points across 11 retailers

11 retailers$8,018 NZD to $13,801 NZD

A
Cheapest Retailer
-
$8,018 NZD
Final sale: no returns
A
Retailer 2
-
$8,083 NZD
View
A
Retailer 3
-
$8,289 NZD
View
A
Retailer 4
-
$8,554 NZD
View
Retailer 5
-
$8,688 NZD
View
Price last confirmed 9 days ago
Retailer 6
-
$8,758 NZD
View
Price last confirmed 29 days ago
A
Retailer 7
-
$8,960 NZD
View
A
Retailer 8
-
$9,777 NZD
View
A
Retailer 9
-
$10,600 NZD
View
B+
Retailer 10
-
$12,007 NZD
View
Most Expensive
B+
MOH London
69AF21D71 · Nov 4
$13,801 NZD
£6,024 GBP
View
10 more retailers have this diamond
Prices start from $8,018 NZDSave up to $5,782 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
$8,018 NZD