Cushion|Natural|GIA

1.21ct I SI2 Cushion Natural Diamond

GD • I/SI2 • GIA 5306799709

Certificate GIA 5306799709

Diamond specifications and retailer prices

From $1,779 USD
As of November 6, 2026
Save $2,387 USD (57%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $4,166 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 SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 5306799709. Listed at 11 retailers as of November 4, 2026, with prices from $1,779 to $4,166, a $2,387 spread on the same certified stone. MOH London lists it at $4,166. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.21
Carat
I
Color
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 5306799709
Dimensions6.36 × 5.55 × 3.94 mm
L/W Ratio1.15
Top View
6.36 mm5.55 mm1.21 ctI / SI2
OriginNatural
CutGood
PolishVery Good
SymmetryVery Good
FluorescenceMedium
CertificateGIA 5306799709
Side View
Table 57.0%CrownGirdle: Very ThickPavilionCulet: NoneDepth 71.1%

Caratlytics Score

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

Price History

Last verified: Nov 6
Current: $4,166 USD|Low: $1,753 USD|High: $4,221 USD|Avg: $2,577 USD|-1.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 8$1,779 USD
Retailer 10$2,154 USD
Retailer 9$2,201 USD
Retailer 12$2,251 USD
Retailer 2$2,344 USD
Retailer 6$2,465 USD
Retailer 7$2,522 USD
Retailer 11$2,572 USD
Retailer 3$2,590 USD
Retailer 4$2,873 USD
Retailer 5$2,961 USD
MOH London$4,166 USD

30 data points across 12 retailers

11 retailers$1,779 USD to $4,166 USD

B+
Cheapest Retailer
-
$1,779 USD
B+
Retailer 2
-
$2,154 USD
View
B+
Retailer 3
-
$2,201 USD
View
Final sale: no returns
B+
Retailer 4
-
$2,251 USD
View
B+
Retailer 5
-
$2,344 USD
View
B
Retailer 6
-
$2,465 USD
View
B+
Retailer 7
-
$2,522 USD
View
B
Retailer 8
-
$2,572 USD
View
B
Retailer 9
-
$2,590 USD
View
B
Retailer 10
-
$2,961 USD
View
Most Expensive
C
MOH London
6F4A4A01C · Nov 4
$4,166 USD
£3,280 GBP
View
10 more retailers have this diamond
Prices start from $1,779 USDSave up to $2,387 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+
1.21ct Cushion
$1,779 USD