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Cushion|Natural|GIA

1.51ct D SI1 Cushion Natural Diamond

EX • D/SI1 • GIA 6511643903

Certificate GIA 6511643903

Diamond specifications and retailer prices

From $6,252 CAD
As of November 6, 2026
Save $4,509 CAD (42%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $10,761 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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6511643903. Listed at 11 retailers as of November 4, 2026, with prices from $6,252 to $10,761, a $4,509 spread on the same certified stone. MOH London lists it at $10,761. 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
D
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6511643903
Dimensions7.13 × 5.95 × 4.15 mm
L/W Ratio1.20
Top View
7.13 mm5.95 mm1.51 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6511643903
Side View
Table 69.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 69.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $10,761 CAD|Low: $6,252 CAD|High: $10,920 CAD|Avg: $7,555 CAD|-1.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 9$6,252 CAD
Retailer 2$6,303 CAD
Retailer 8$6,463 CAD
Retailer 5$6,670 CAD
Retailer 11$6,774 CAD
Retailer 10$6,829 CAD
Retailer 3$6,987 CAD
Retailer 4$7,624 CAD
Retailer 6$8,265 CAD
Retailer 7$9,362 CAD
MOH London$10,761 CAD

33 data points across 11 retailers

11 retailers$6,252 CAD to $10,761 CAD

A
Cheapest Retailer
-
$6,252 CAD
Final sale: no returns
A
Retailer 2
-
$6,303 CAD
View
A
Retailer 3
-
$6,463 CAD
View
A
Retailer 4
-
$6,670 CAD
View
Retailer 5
-
$6,774 CAD
View
Price last confirmed 8 days ago
Retailer 6
-
$6,829 CAD
View
Price last confirmed 28 days ago
A
Retailer 7
-
$6,987 CAD
View
A
Retailer 8
-
$7,624 CAD
View
A
Retailer 9
-
$8,265 CAD
View
B+
Retailer 10
-
$9,362 CAD
View
Most Expensive
B+
MOH London
69AF21D71 · Nov 4
$10,761 CAD
£6,024 GBP
View
10 more retailers have this diamond
Prices start from $6,252 CADSave up to $4,509 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
1.51ct Cushion
$6,252 CAD