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Cushion|Natural|GIA

1.51ct K SI1 Cushion Natural Diamond

EX • K/SI1 • GIA 3555303625

Certificate GIA 3555303625

Diamond specifications and retailer prices

From $4,883 NZD
As of November 5, 2026
Save $5,820 NZD (54%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $10,703 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 3555303625. Listed at 14 retailers as of November 4, 2026, with prices from $4,883 to $10,703, a $5,820 spread on the same certified stone. MOH London lists it at $10,703. 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
K
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 3555303625
Dimensions7.82 × 6.01 × 4.00 mm
L/W Ratio1.30
Girdle conditionFaceted
Top View
7.82 mm6.01 mm1.51 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 3555303625
Side View
Table 65.0%CrownGirdle: ThickPavilionCulet: NoneDepth 66.6%

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 5
Current: $10,703 NZD|Low: $4,883 NZD|High: $11,340 NZD|Avg: $6,784 NZD|-5.6%
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
November 7, 2026
Retailer 5$4,883 NZD
Retailer 3$4,941 NZD
Retailer 8$5,251 NZD
Retailer 10$5,347 NZD
Retailer 9$5,367 NZD
Retailer 12$5,637 NZD
Retailer 4$5,993 NZD
Retailer 13$6,593 NZD
Retailer 2$6,640 NZD
Retailer 6$7,472 NZD
Retailer 7$7,833 NZD
Retailer 11$10,107 NZD
MOH London$10,703 NZD

34 data points across 13 retailers

14 retailers$4,883 NZD to $10,703 NZD

A
Cheapest Retailer
-
$4,883 NZD
A
Retailer 2
-
$4,941 NZD
View
A
Retailer 3
-
$5,251 NZD
View
A
Retailer 4
-
$5,347 NZD
View
A
Retailer 5
-
$5,367 NZD
View
Final sale: no returns
A
Retailer 6
-
$5,637 NZD
View
A
Retailer 7
-
$5,993 NZD
View
B+
Retailer 8
-
$6,593 NZD
View
B+
Retailer 9
-
$6,640 NZD
View
B+
Retailer 10
-
$6,692 NZD
View
B+
Retailer 11
-
$7,472 NZD
View
B+
Retailer 12
-
$7,833 NZD
View
B
Retailer 13
-
$10,107 NZD
View
Most Expensive
B
MOH London
A225B3F8E · Nov 4
$10,703 NZD
£4,672 GBP
View
13 more retailers have this diamond
Prices start from $4,883 NZDSave up to $5,820 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
$4,883 NZD