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Cushion|Natural|GIA

1.51ct K SI1 Cushion Natural Diamond

GD • K/SI1 • GIA 6445506666

Certificate GIA 6445506666

Diamond specifications and retailer prices

From $3,193 CAD
As of November 4, 2026
Save $3,556 CAD (53%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $6,749 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 standard cut grade stated by the retailer rather than the lab and certified by GIA 6445506666. Listed at 15 retailers as of November 4, 2026, with prices from $3,193 to $6,749, a $3,556 spread on the same certified stone. MOH London lists it at $6,749. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
K
Color
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6445506666
Dimensions6.60 × 5.95 × 4.24 mm
L/W Ratio1.11
Top View
6.60 mm5.95 mm1.51 ctK / SI1
OriginNatural
CutGood
PolishVery Good
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6445506666
Side View
Table 66.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 71.2%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $6,749 CAD|Low: $3,193 CAD|High: $6,840 CAD|Avg: $4,363 CAD|-1.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 6$3,193 CAD
Retailer 7$3,459 CAD
Retailer 8$3,666 CAD
Retailer 2$3,888 CAD
Retailer 4$4,258 CAD
Retailer 3$4,664 CAD
Retailer 5$4,939 CAD
MOH London$6,749 CAD

38 data points across 8 retailers

15 retailers$3,193 CAD to $6,749 CAD

B+
Cheapest Retailer
-
$3,193 CAD
B+
Retailer 2
-
$3,284 CAD
View
B+
Retailer 3
-
$3,459 CAD
View
B+
Retailer 4
-
$3,622 CAD
View
Retailer 5
-
$3,666 CAD
View
Price last confirmed 9 days ago
B+
Retailer 6
-
$3,720 CAD
View
B+
Retailer 7
-
$3,735 CAD
View
B+
Retailer 8
-
$3,888 CAD
View
B+
Retailer 9
-
$3,951 CAD
View
B+
Retailer 10
-
$3,981 CAD
View
B+
Retailer 11
-
$4,258 CAD
View
B+
Retailer 12
-
$4,664 CAD
View
Retailer 13
-
$4,699 CAD
View
Price last confirmed 15 days ago
B+
Retailer 14
-
$4,939 CAD
View
Most Expensive
B
MOH London
6ED3F1AE5 · Nov 4
$6,749 CAD
£3,778 GBP
View
14 more retailers have this diamond
Prices start from $3,193 CADSave up to $3,556 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
$3,193 CAD