Cushion|Natural|GIA

1.51ct K SI1 Cushion Natural Diamond

EX • K/SI1 • GIA 1343477968

Certificate GIA 1343477968

Diamond specifications and retailer prices

From $6,626 CAD
As of November 6, 2026
Save $6,309 CAD (49%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $12,935 CAD 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 $6,626 to $12,935, a $6,309 spread on the same certified stone. MOH London lists it at $12,935. 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
Color
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $12,935 CAD|Low: $6,626 CAD|High: $13,126 CAD|Avg: $8,711 CAD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 8$6,626 CAD
Retailer 5$6,752 CAD
Retailer 9$7,455 CAD
Retailer 6$7,975 CAD
Retailer 7$8,340 CAD
Retailer 3$8,362 CAD
Retailer 2$9,056 CAD
Retailer 4$10,741 CAD
MOH London$12,935 CAD

44 data points across 9 retailers

15 retailers$6,626 CAD to $12,935 CAD

B
Cheapest Retailer
-
$6,626 CAD
Retailer 2
-
$6,752 CAD
View
Price last confirmed 10 days ago
B+
Retailer 3
-
$6,877 CAD
View
B+
Retailer 4
-
$6,956 CAD
View
B+
Retailer 5
-
$7,044 CAD
View
B
Retailer 6
-
$7,424 CAD
View
B
Retailer 7
-
$7,455 CAD
View
Retailer 8
-
$7,975 CAD
View
Price last confirmed 9 days ago
B
Retailer 9
-
$8,340 CAD
View
B
Retailer 10
-
$8,362 CAD
View
B
Retailer 11
-
$8,407 CAD
View
B
Retailer 12
-
$9,056 CAD
View
Retailer 13
-
$9,710 CAD
View
Price last confirmed 15 days ago
B
Retailer 14
-
$10,741 CAD
View
Most Expensive
B
MOH London
5FC1F0D5D · Nov 4
$12,935 CAD
£7,241 GBP
View
14 more retailers have this diamond
Prices start from $6,626 CADSave up to $6,309 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.

B+
1.51ct Cushion
$6,626 CAD