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Cushion|Natural|GIA

1.51ct K SI1 Cushion Natural Diamond

EX • K/SI1 • GIA 1343477968

Certificate GIA 1343477968

Diamond specifications and retailer prices

From $8,498 NZD
As of November 6, 2026
Save $8,091 NZD (49%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $16,589 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 1343477968. Listed at 15 retailers as of November 4, 2026, with prices from $8,498 to $16,589, a $8,091 spread on the same certified stone. MOH London lists it at $16,589. 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 1343477968
Dimensions6.60 × 6.58 × 4.43 mm
L/W Ratio1.00
Culet sizeNone
Top View
6.60 mm6.58 mm1.51 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1343477968
Side View
Table 60.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 67.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $16,589 NZD|Low: $8,498 NZD|High: $16,834 NZD|Avg: $11,171 NZD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 7, 2026
Retailer 8$8,498 NZD
Retailer 5$8,659 NZD
Retailer 9$9,561 NZD
Retailer 6$10,228 NZD
Retailer 2$10,692 NZD
Retailer 7$10,695 NZD
Retailer 3$11,614 NZD
Retailer 4$13,775 NZD
MOH London$16,589 NZD

45 data points across 9 retailers

15 retailers$8,498 NZD to $16,589 NZD

B
Cheapest Retailer
-
$8,498 NZD
Retailer 2
-
$8,659 NZD
View
Price last confirmed 10 days ago
B+
Retailer 3
-
$8,819 NZD
View
B+
Retailer 4
-
$8,920 NZD
View
B+
Retailer 5
-
$9,034 NZD
View
B
Retailer 6
-
$9,521 NZD
View
B
Retailer 7
-
$9,561 NZD
View
Retailer 8
-
$10,228 NZD
View
Price last confirmed 9 days ago
B
Retailer 9
-
$10,692 NZD
View
B
Retailer 10
-
$10,695 NZD
View
B
Retailer 11
-
$10,782 NZD
View
B
Retailer 12
-
$11,614 NZD
View
Retailer 13
-
$12,452 NZD
View
Price last confirmed 15 days ago
B
Retailer 14
-
$13,775 NZD
View
Most Expensive
B
MOH London
5FC1F0D5D · Nov 4
$16,589 NZD
£7,241 GBP
View
14 more retailers have this diamond
Prices start from $8,498 NZDSave up to $8,091 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.

B+
1.51ct Cushion
$8,498 NZD