Cushion|Natural|GIA

1.20ct K SI1 Cushion Natural Diamond

EX • K/SI1 • GIA 1555689564

Certificate GIA 1555689564

Diamond specifications and retailer prices

From $2,341 USD
As of November 6, 2026
Save $2,240 USD (49%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $4,581 USD 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 1555689564. Listed at 8 retailers as of November 2, 2026, with prices from $2,341 to $4,581, a $2,240 spread on the same certified stone. MOH London lists it at $4,581. 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
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1555689564
Dimensions7.26 × 5.38 × 3.70 mm
L/W Ratio1.35
Culet sizeNone
Key to symbols
Feather, Crystal, Cloud, Cavity, Needle
Top View
7.26 mm5.38 mm1.20 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1555689564
Side View
Table 63.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 68.8%

Caratlytics Score

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

Price History

Last verified: Nov 6
Current: $4,581 USD|Low: $1,771 USD|High: $4,636 USD|Avg: $2,496 USD|+44.2%
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 3$1,771 USD
Retailer 11$1,814 USD
Retailer 10$1,982 USD
Retailer 8$2,341 USD
Retailer 6$2,472 USD
Retailer 2$2,512 USD
Retailer 7$2,585 USD
Retailer 9$2,755 USD
Retailer 4$2,931 USD
Retailer 5$3,191 USD
MOH London$4,581 USD

34 data points across 11 retailers

8 retailers$2,341 USD to $4,581 USD

B+
Cheapest Retailer
-
$2,341 USD
B+
Retailer 2
-
$2,472 USD
View
B+
Retailer 3
-
$2,512 USD
View
B
Retailer 4
-
$2,585 USD
View
B
Retailer 5
-
$2,755 USD
View
B
Retailer 6
-
$2,931 USD
View
B
Retailer 7
-
$3,191 USD
View
Most Expensive
B
MOH London
57F3EF09A · Nov 2
$4,581 USD
£3,607 GBP
View
7 more retailers have this diamond
Prices start from $2,341 USDSave up to $2,240 USD

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+
1.20ct Cushion
$2,341 USD