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Cushion|Natural|GIA

1.30ct F SI1 Cushion Natural Diamond

EX • F/SI1 • GIA 2556450159

Certificate GIA 2556450159

Diamond specifications and retailer prices

From $5,778 CAD
As of November 6, 2026
Save $6,226 CAD (52%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $12,004 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 F 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 2556450159. Listed at 19 retailers as of November 4, 2026, with prices from $5,778 to $12,004, a $6,226 spread on the same certified stone. MOH London lists it at $12,004. 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
F
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle32.67°
Pavilion angle53.38°
OriginNatural
Grading LabGIA
CertificateGIA 2556450159
Dimensions7.93 × 5.64 × 3.89 mm
L/W Ratio1.41
Culet sizeNone
Key to symbols
Crystal, Feather, Needle
Top View
7.93 mm5.64 mm1.30 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2556450159
Side View
Table 66.0%Crown 32.67°Girdle: MED-THKPavilion 53.38°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: $12,004 CAD|Low: $5,778 CAD|High: $12,181 CAD|Avg: $7,692 CAD|-1.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 7, 2026
Retailer 8$5,778 CAD
Retailer 4$5,790 CAD
Retailer 10$6,394 CAD
Retailer 11$6,617 CAD
Retailer 9$6,919 CAD
Retailer 3$6,974 CAD
Retailer 2$7,320 CAD
Retailer 5$7,331 CAD
Retailer 6$8,503 CAD
Retailer 7$9,220 CAD
MOH London$12,004 CAD

29 data points across 11 retailers

19 retailers$5,778 CAD to $12,004 CAD

B+
Cheapest Retailer
-
$5,778 CAD
A
Retailer 2
-
$5,790 CAD
View
B+
Retailer 3
-
$6,394 CAD
View
B+
Retailer 4
-
$6,414 CAD
View
B+
Retailer 5
-
$6,591 CAD
View
B
Retailer 6
-
$6,919 CAD
View
B
Retailer 7
-
$6,974 CAD
View
Final sale: no returns
B+
Retailer 8
-
$7,082 CAD
View
B+
Retailer 9
-
$7,320 CAD
View
B+
Retailer 10
-
$7,331 CAD
View
Retailer 11
-
$7,341 CAD
View
Price last confirmed 22 days ago
B
Retailer 12
-
$7,568 CAD
View
Retailer 13
-
$7,618 CAD
View
Price last confirmed 29 days ago
B
Retailer 14
-
$7,773 CAD
View
B
Retailer 15
-
$7,914 CAD
View
B
Retailer 16
-
$8,503 CAD
View
B
Retailer 17
-
$9,220 CAD
View
B
Retailer 18
-
$11,264 CAD
View
Most Expensive
B
MOH London
6D236D827 · Nov 4
$12,004 CAD
£6,720 GBP
View
18 more retailers have this diamond
Prices start from $5,778 CADSave up to $6,226 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
$5,778 CAD