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Cushion|Natural|GIA

1.30ct I SI1 Cushion Natural Diamond

ID • I/SI1 • GIA 6435484641

Certificate GIA 6435484641

Diamond specifications and retailer prices

From $2,791 CAD
As of November 6, 2026
Save $3,462 CAD (55%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $6,252 CAD at MOH London · As of November 4, 2026
View at MOH London

About this 1.3ct natural cushion diamond

This 1.3ct natural cushion sits in the one-and-a-quarter to one-and-a-half carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6435484641. Listed at 23 retailers as of November 4, 2026, with prices from $2,791 to $6,252, a $3,462 spread on the same certified stone. MOH London lists it at $6,252. 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

1.30
Carat
I
Color
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.5°
Pavilion angle57.65°
OriginNatural
Grading LabGIA
CertificateGIA 6435484641
Dimensions6.24 × 5.92 × 4.14 mm
L/W Ratio1.05
Top View
6.24 mm5.92 mm1.30 ctI / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6435484641
Side View
Table 64.0%Crown 38.5°Girdle: STK-VTKPavilion 57.65°Culet: NoneDepth 69.9%

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: $6,252 CAD|Low: $2,791 CAD|High: $6,336 CAD|Avg: $3,884 CAD|-1.3%
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 10$2,791 CAD
Retailer 2$2,792 CAD
Retailer 8$3,194 CAD
Retailer 4$3,470 CAD
Retailer 3$3,545 CAD
Retailer 11$3,595 CAD
Retailer 9$3,785 CAD
Retailer 6$3,886 CAD
Retailer 7$4,366 CAD
Retailer 5$4,442 CAD
MOH London$6,252 CAD

26 data points across 11 retailers

23 retailers$2,791 CAD to $6,252 CAD

A
Cheapest Retailer
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$2,791 CAD
A
Retailer 2
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$2,792 CAD
View
A
Retailer 3
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$3,168 CAD
View
A
Retailer 4
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$3,194 CAD
View
A
Retailer 5
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$3,211 CAD
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A
Retailer 6
-
$3,232 CAD
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A
Retailer 7
-
$3,301 CAD
View
Final sale: no returns
A
Retailer 8
-
$3,470 CAD
View
A
Retailer 9
-
$3,545 CAD
View
Retailer 10
-
$3,578 CAD
View
Price last confirmed 9 days ago
A
Retailer 11
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$3,595 CAD
View
A
Retailer 12
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$3,775 CAD
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A
Retailer 13
-
$3,785 CAD
View
A
Retailer 14
-
$3,874 CAD
View
A
Retailer 15
-
$3,886 CAD
View
A
Retailer 16
-
$3,896 CAD
View
A
Retailer 17
-
$3,954 CAD
View
Retailer 18
-
$4,009 CAD
View
Price last confirmed 31 days ago
B+
Retailer 19
-
$4,366 CAD
View
B+
Retailer 20
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$4,442 CAD
View
B
Retailer 21
-
$5,259 CAD
View
B
Retailer 22
-
$5,406 CAD
View
Most Expensive
B
MOH London
C75FA4012 · Nov 4
$6,252 CAD
£3,500 GBP
View
22 more retailers have this diamond
Prices start from $2,791 CADSave up to $3,462 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
1.30ct Cushion
$2,791 CAD