CaratHunter
Plans
Cushion|Natural|GIA

1.21ct I SI1 Cushion Natural Diamond

ID • I/SI1 • GIA 1309792916

Certificate GIA 1309792916

Diamond specifications and retailer prices

From $2,427 SGD
As of November 6, 2026
Save $3,256 SGD (57%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $5,684 SGD at MOH London · As of November 7, 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 1309792916. Listed at 14 retailers as of November 6, 2026, with prices from $2,427 to $5,684, a $3,256 spread on the same certified stone. MOH London lists it at $5,684. 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
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 1309792916
Dimensions6.26 × 5.49 × 3.94 mm
L/W Ratio1.14
Key to symbols
Feather, Twinning Wisp, Indented Natural, Natural
Top View
6.26 mm5.49 mm1.21 ctI / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceStrong
CertificateGIA 1309792916
Side View
Table 58.0%CrownGirdle: Very ThickPavilionCulet: NoneDepth 71.8%

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: $5,684 SGD|Low: $2,411 SGD|High: $5,776 SGD|Avg: $3,519 SGD|-1.5%
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 7, 2026
Retailer 9$2,427 SGD
Retailer 10$2,948 SGD
Retailer 11$3,009 SGD
Retailer 3$3,058 SGD
Retailer 6$3,164 SGD
Retailer 12$3,262 SGD
Retailer 2$3,451 SGD
Retailer 4$3,526 SGD
Retailer 5$3,550 SGD
Retailer 13$3,654 SGD
Retailer 8$3,981 SGD
Retailer 7$4,051 SGD
MOH London$5,684 SGD

32 data points across 13 retailers

14 retailers$2,427 SGD to $5,684 SGD

A
Cheapest Retailer
-
$2,427 SGD
B+
Retailer 2
-
$2,946 SGD
View
B+
Retailer 3
-
$2,948 SGD
View
B+
Retailer 4
-
$3,009 SGD
View
Final sale: no returns
B+
Retailer 5
-
$3,058 SGD
View
B+
Retailer 6
-
$3,164 SGD
View
Retailer 7
-
$3,262 SGD
View
Price last confirmed 30 days ago
B+
Retailer 8
-
$3,374 SGD
View
B+
Retailer 9
-
$3,451 SGD
View
B+
Retailer 10
-
$3,550 SGD
View
Retailer 11
-
$3,654 SGD
View
Price last confirmed 31 days ago
B
Retailer 12
-
$3,981 SGD
View
B
Retailer 13
-
$4,051 SGD
View
Most Expensive
B
MOH London
BFA899C27 · Nov 7
$5,684 SGD
£3,492 GBP
View
13 more retailers have this diamond
Prices start from $2,427 SGDSave up to $3,256 SGD

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
$2,427 SGD