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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 $2,411 SGD
As of November 6, 2026
Save $3,105 SGD (56%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $5,516 SGD 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 $2,411 to $5,516, a $3,105 spread on the same certified stone. MOH London lists it at $5,516. 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: $5,516 SGD|Low: $2,379 SGD|High: $6,154 SGD|Avg: $3,840 SGD|-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$2,411 SGD
Retailer 10$2,913 SGD
Retailer 11$3,059 SGD
Retailer 5$3,140 SGD
Retailer 9$3,340 SGD
Retailer 3$3,354 SGD
Retailer 6$3,359 SGD
Retailer 4$3,806 SGD
Retailer 7$3,852 SGD
Retailer 2$3,919 SGD
Retailer 8$4,019 SGD
Retailer 12$5,153 SGD
MOH London$5,516 SGD

33 data points across 13 retailers

14 retailers$2,411 SGD to $5,516 SGD

A
Cheapest Retailer
-
$2,411 SGD
A
Retailer 2
-
$2,913 SGD
View
Final sale: no returns
A
Retailer 3
-
$3,059 SGD
View
A
Retailer 4
-
$3,140 SGD
View
A
Retailer 5
-
$3,340 SGD
View
A
Retailer 6
-
$3,354 SGD
View
A
Retailer 7
-
$3,359 SGD
View
A
Retailer 8
-
$3,663 SGD
View
A
Retailer 9
-
$3,806 SGD
View
A
Retailer 10
-
$3,852 SGD
View
A
Retailer 11
-
$3,919 SGD
View
A
Retailer 12
-
$4,019 SGD
View
B+
Retailer 13
-
$5,153 SGD
View
Most Expensive
B+
MOH London
53B5DEFF3 · Nov 4
$5,516 SGD
£3,389 GBP
View
13 more retailers have this diamond
Prices start from $2,411 SGDSave up to $3,105 SGD

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
$2,411 SGD