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Cushion|Natural|GIA

1.21ct I SI1 Cushion Natural Diamond

EX • I/SI1 • GIA 7553811117

Certificate GIA 7553811117

Diamond specifications and retailer prices

From $2,124 USD
As of November 6, 2026
Save $2,811 USD (57%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $4,935 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 7553811117. Listed at 17 retailers as of November 4, 2026, with prices from $2,124 to $4,935, a $2,811 spread on the same certified stone. MOH London lists it at $4,935. 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
I
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 7553811117
Dimensions7.05 × 5.38 × 3.74 mm
L/W Ratio1.31
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Knot, Feather, Needle
Top View
7.05 mm5.38 mm1.21 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 7553811117
Side View
Table 64.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 69.4%

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: $4,935 USD|Low: $2,124 USD|High: $5,000 USD|Avg: $3,120 USD|-1.3%
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
November 6, 2026
Retailer 13$2,124 USD
Retailer 2$2,213 USD
Retailer 11$2,516 USD
Retailer 4$2,606 USD
Retailer 6$2,740 USD
Retailer 5$2,838 USD
Retailer 8$2,955 USD
Retailer 3$2,966 USD
Retailer 9$2,972 USD
Retailer 12$3,070 USD
Retailer 7$3,287 USD
Retailer 10$3,447 USD
MOH London$4,935 USD

25 data points across 13 retailers

17 retailers$2,124 USD to $4,935 USD

A
Cheapest Retailer
-
$2,124 USD
A
Retailer 2
-
$2,213 USD
View
B+
Retailer 3
-
$2,516 USD
View
B+
Retailer 4
-
$2,606 USD
View
Final sale: no returns
B+
Retailer 5
-
$2,671 USD
View
B+
Retailer 6
-
$2,675 USD
View
B+
Retailer 7
-
$2,740 USD
View
Retailer 8
-
$2,838 USD
View
Price last confirmed 9 days ago
B+
Retailer 9
-
$2,845 USD
View
B+
Retailer 10
-
$2,955 USD
View
B+
Retailer 11
-
$2,966 USD
View
B+
Retailer 12
-
$2,972 USD
View
B
Retailer 13
-
$3,070 USD
View
Retailer 14
-
$3,212 USD
View
Price last confirmed 31 days ago
B+
Retailer 15
-
$3,287 USD
View
B
Retailer 16
-
$3,447 USD
View
Most Expensive
B
MOH London
A1072B078 · Nov 4
$4,935 USD
£3,886 GBP
View
16 more retailers have this diamond
Prices start from $2,124 USDSave up to $2,811 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
$2,124 USD