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Cushion|Natural|GIA

1.21ct D SI1 Cushion Natural Diamond

ID • D/SI1 • GIA 1558366202

Certificate GIA 1558366202

Diamond specifications and retailer prices

From $2,483 USD
As of November 6, 2026
Save $3,008 USD (55%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $5,491 USD at MOH London · As of November 4, 2026
View at MOH London

About this 1.21ct natural cushion diamond

This 1.21ct natural cushion sits in the classic one-carat band, graded D 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 1558366202. Listed at 17 retailers as of November 4, 2026, with prices from $2,483 to $5,491, a $3,008 spread on the same certified stone. MOH London lists it at $5,491. 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

1.21
Carat
D
Color
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 1558366202
Dimensions7.16 × 5.34 × 3.62 mm
L/W Ratio1.34
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Cavity, Indented Natural
Top View
7.16 mm5.34 mm1.21 ctD / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 1558366202
Side View
Table 67.0%CrownGirdle: THN-STKPavilionCulet: NoneDepth 67.7%

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: $5,491 USD|Low: $2,457 USD|High: $5,780 USD|Avg: $3,502 USD|-5.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 6, 2026
Retailer 12$2,483 USD
Retailer 2$2,592 USD
Retailer 5$2,968 USD
Retailer 10$3,002 USD
Retailer 3$3,038 USD
Retailer 13$3,185 USD
Retailer 14$3,293 USD
Retailer 11$3,407 USD
Retailer 8$3,452 USD
Retailer 4$3,520 USD
Retailer 6$3,650 USD
Retailer 7$3,833 USD
Retailer 9$4,019 USD
MOH London$5,491 USD

29 data points across 14 retailers

17 retailers$2,483 USD to $5,491 USD

A
Cheapest Retailer
-
$2,483 USD
A
Retailer 2
-
$2,592 USD
View
B+
Retailer 3
-
$2,968 USD
View
B+
Retailer 4
-
$3,002 USD
View
B+
Retailer 5
-
$3,038 USD
View
Final sale: no returns
B+
Retailer 6
-
$3,160 USD
View
B+
Retailer 7
-
$3,185 USD
View
Retailer 8
-
$3,293 USD
View
Price last confirmed 8 days ago
B+
Retailer 9
-
$3,365 USD
View
B+
Retailer 10
-
$3,407 USD
View
B+
Retailer 11
-
$3,452 USD
View
B+
Retailer 12
-
$3,520 USD
View
B+
Retailer 13
-
$3,650 USD
View
Retailer 14
-
$3,661 USD
View
Price last confirmed 33 days ago
B+
Retailer 15
-
$3,833 USD
View
B+
Retailer 16
-
$4,019 USD
View
Most Expensive
B
MOH London
ED05D376F · Nov 4
$5,491 USD
£4,324 GBP
View
16 more retailers have this diamond
Prices start from $2,483 USDSave up to $3,008 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.

A
1.21ct Cushion
$2,483 USD