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Cushion|Natural|GIA

1.20ct K SI1 Cushion Natural Diamond

ID • K/SI1 • GIA 1555890599

Certificate GIA 1555890599

Diamond specifications and retailer prices

From $2,071 CAD
As of November 6, 2026
Save $2,787 CAD (57%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $4,857 CAD at MOH London · As of November 2, 2026
View at MOH London

About this 1.2ct natural cushion diamond

This 1.2ct natural cushion sits in the classic one-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 1555890599. Listed at 15 retailers as of November 2, 2026, with prices from $2,071 to $4,857, a $2,787 spread on the same certified stone. MOH London lists it at $4,857. 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

1.20
Carat
K
Color
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1555890599
Dimensions7.26 × 5.39 × 3.65 mm
L/W Ratio1.35
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Crystal, Needle, Cloud
Top View
7.26 mm5.39 mm1.20 ctK / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1555890599
Side View
Table 66.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 67.8%

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: $4,857 CAD|Low: $2,071 CAD|High: $4,916 CAD|Avg: $3,131 CAD|-1.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 9$2,071 CAD
Retailer 2$2,175 CAD
Retailer 6$2,559 CAD
Retailer 3$2,689 CAD
Retailer 10$2,772 CAD
Retailer 5$2,888 CAD
Retailer 8$3,010 CAD
Retailer 7$3,383 CAD
Retailer 4$3,765 CAD
MOH London$4,857 CAD

26 data points across 10 retailers

15 retailers$2,071 CAD to $4,857 CAD

A
Cheapest Retailer
-
$2,071 CAD
A
Retailer 2
-
$2,175 CAD
View
B+
Retailer 3
-
$2,559 CAD
View
B+
Retailer 4
-
$2,594 CAD
View
B+
Retailer 5
-
$2,595 CAD
View
B+
Retailer 6
-
$2,689 CAD
View
Retailer 7
-
$2,772 CAD
View
Price last confirmed 8 days ago
B+
Retailer 8
-
$2,841 CAD
View
B+
Retailer 9
-
$2,888 CAD
View
B+
Retailer 10
-
$2,898 CAD
View
B+
Retailer 11
-
$2,967 CAD
View
B+
Retailer 12
-
$3,010 CAD
View
B+
Retailer 13
-
$3,383 CAD
View
B
Retailer 14
-
$3,765 CAD
View
Most Expensive
B
MOH London
4A1957514 · Nov 2
$4,857 CAD
£2,719 GBP
View
14 more retailers have this diamond
Prices start from $2,071 CADSave up to $2,787 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
1.20ct Cushion
$2,071 CAD