Cushion|Natural|GIA

1.21ct E SI1 Cushion Natural Diamond

EX • E/SI1 • GIA 5231993495

Certificate GIA 5231993495

Diamond specifications and retailer prices

From $2,240 USD
As of November 6, 2026
Save $2,671 USD (54%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $4,911 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 E 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 5231993495. Listed at 15 retailers as of November 4, 2026, with prices from $2,240 to $4,911, a $2,671 spread on the same certified stone. MOH London lists it at $4,911. 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
E
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.4°
Pavilion angle36.5°
OriginNatural
Grading LabGIA
CertificateGIA 5231993495
Dimensions6.42 × 6.10 × 4.01 mm
L/W Ratio1.05
Culet sizeNone
Top View
6.42 mm6.10 mm1.21 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5231993495
Side View
Table 59.0%Crown 38.4°Girdle: MED-ETKPavilion 36.5°Culet: NoneDepth 65.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $4,911 USD|Low: $2,210 USD|High: $5,190 USD|Avg: $3,095 USD|-5.4%
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 10$2,240 USD
Retailer 8$2,253 USD
Retailer 9$2,391 USD
Retailer 3$2,462 USD
Retailer 14$2,512 USD
Retailer 5$2,745 USD
Retailer 4$2,890 USD
Retailer 12$2,890 USD
Retailer 13$2,990 USD
Retailer 7$3,117 USD
Retailer 2$3,228 USD
Retailer 6$3,276 USD
Retailer 11$3,608 USD
MOH London$4,911 USD

41 data points across 14 retailers

15 retailers$2,240 USD to $4,911 USD

A
Cheapest Retailer
-
$2,240 USD
A
Retailer 2
-
$2,253 USD
View
A
Retailer 3
-
$2,391 USD
View
A
Retailer 4
-
$2,462 USD
View
Final sale: no returns
A
Retailer 5
-
$2,512 USD
View
B+
Retailer 6
-
$2,745 USD
View
B+
Retailer 7
-
$2,890 USD
View
B+
Retailer 8
-
$2,890 USD
View
B+
Retailer 9
-
$2,990 USD
View
B+
Retailer 10
-
$3,117 USD
View
B+
Retailer 11
-
$3,228 USD
View
Retailer 12
-
$3,276 USD
View
Price last confirmed 30 days ago
Retailer 13
-
$3,559 USD
View
Price last confirmed 14 days ago
B+
Retailer 14
-
$3,608 USD
View
Most Expensive
B
MOH London
B80125C31 · Nov 4
$4,911 USD
£3,867 GBP
View
14 more retailers have this diamond
Prices start from $2,240 USDSave up to $2,671 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
$2,240 USD