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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 $2,646 CAD
As of November 6, 2026
Save $3,408 CAD (56%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $6,054 CAD 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 $2,646 to $6,054, a $3,408 spread on the same certified stone. MOH London lists it at $6,054. 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
Color
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: $6,054 CAD|Low: $2,611 CAD|High: $6,754 CAD|Avg: $4,214 CAD|-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$2,646 CAD
Retailer 10$3,197 CAD
Retailer 11$3,358 CAD
Retailer 5$3,446 CAD
Retailer 9$3,666 CAD
Retailer 3$3,681 CAD
Retailer 6$3,687 CAD
Retailer 4$4,178 CAD
Retailer 7$4,228 CAD
Retailer 2$4,301 CAD
Retailer 8$4,411 CAD
Retailer 12$5,656 CAD
MOH London$6,054 CAD

33 data points across 13 retailers

14 retailers$2,646 CAD to $6,054 CAD

A
Cheapest Retailer
-
$2,646 CAD
A
Retailer 2
-
$3,197 CAD
View
Final sale: no returns
A
Retailer 3
-
$3,358 CAD
View
A
Retailer 4
-
$3,446 CAD
View
A
Retailer 5
-
$3,666 CAD
View
A
Retailer 6
-
$3,681 CAD
View
A
Retailer 7
-
$3,687 CAD
View
A
Retailer 8
-
$4,020 CAD
View
A
Retailer 9
-
$4,178 CAD
View
A
Retailer 10
-
$4,228 CAD
View
A
Retailer 11
-
$4,301 CAD
View
A
Retailer 12
-
$4,411 CAD
View
B+
Retailer 13
-
$5,656 CAD
View
Most Expensive
B+
MOH London
53B5DEFF3 · Nov 4
$6,054 CAD
£3,389 GBP
View
13 more retailers have this diamond
Prices start from $2,646 CADSave up to $3,408 CAD

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
$2,646 CAD