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Cushion|Natural|GIA

1.50ct K SI1 Cushion Natural Diamond

EX • K/SI1 • GIA 1543520312

Certificate GIA 1543520312

Diamond specifications and retailer prices

From $3,393 NZD
As of November 6, 2026
Save $4,371 NZD (56%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $7,764 NZD at MOH London · As of November 4, 2026
View at MOH London

About this 1.5ct natural cushion diamond

This 1.5ct 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 1543520312. Listed at 14 retailers as of November 4, 2026, with prices from $3,393 to $7,764, a $4,371 spread on the same certified stone. MOH London lists it at $7,764. 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

1.50
Carat
K
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Pavilion angle37.5°
OriginNatural
Grading LabGIA
CertificateGIA 1543520312
Dimensions7.45 × 6.07 × 4.17 mm
L/W Ratio1.23
Girdle conditionFaceted
Top View
7.45 mm6.07 mm1.50 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1543520312
Side View
Table 64.0%CrownGirdle: MED-THKPavilion 37.5°Culet: NoneDepth 68.8%

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: $7,764 NZD|Low: $3,348 NZD|High: $8,662 NZD|Avg: $5,404 NZD|-10.4%
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 6, 2026
Retailer 13$3,393 NZD
Retailer 10$4,100 NZD
Retailer 11$4,306 NZD
Retailer 5$4,420 NZD
Retailer 9$4,701 NZD
Retailer 3$4,721 NZD
Retailer 6$4,728 NZD
Retailer 4$5,358 NZD
Retailer 7$5,423 NZD
Retailer 2$5,516 NZD
Retailer 8$5,657 NZD
Retailer 12$7,253 NZD
MOH London$7,764 NZD

33 data points across 13 retailers

14 retailers$3,393 NZD to $7,764 NZD

A
Cheapest Retailer
-
$3,393 NZD
A
Retailer 2
-
$4,100 NZD
View
Final sale: no returns
A
Retailer 3
-
$4,306 NZD
View
A
Retailer 4
-
$4,420 NZD
View
A
Retailer 5
-
$4,701 NZD
View
A
Retailer 6
-
$4,721 NZD
View
A
Retailer 7
-
$4,728 NZD
View
A
Retailer 8
-
$5,156 NZD
View
A
Retailer 9
-
$5,358 NZD
View
A
Retailer 10
-
$5,423 NZD
View
A
Retailer 11
-
$5,516 NZD
View
A
Retailer 12
-
$5,657 NZD
View
B+
Retailer 13
-
$7,253 NZD
View
Most Expensive
B+
MOH London
53B5DEFF3 · Nov 4
$7,764 NZD
£3,389 GBP
View
13 more retailers have this diamond
Prices start from $3,393 NZDSave up to $4,371 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
1.50ct Cushion
$3,393 NZD