CaratHunter
Plans
Radiant|Natural|GIA

1.21ct J SI1 Radiant Natural Diamond

EX • J/SI1 • GIA 2558197624

Certificate GIA 2558197624

Diamond specifications and retailer prices

From $2,051 SGD
As of November 6, 2026
Save $2,751 SGD (57%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $4,802 SGD at MOH London · As of November 2, 2026
View at MOH London

About this 1.21ct natural radiant diamond

This 1.21ct natural radiant sits in the classic one-carat band, graded J 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 2558197624. Listed at 14 retailers as of November 2, 2026, with prices from $2,051 to $4,802, a $2,751 spread on the same certified stone. MOH London lists it at $4,802. 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
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2558197624
Dimensions7.23 × 5.56 × 3.78 mm
L/W Ratio1.30
Top View
7.23 mm5.56 mm1.21 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2558197624
Side View
Table 68.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 68.0%

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: $4,802 SGD|Low: $2,051 SGD|High: $4,888 SGD|Avg: $3,020 SGD|-1.8%
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 7, 2026
Retailer 11$2,051 SGD
Retailer 5$2,154 SGD
Retailer 8$2,550 SGD
Retailer 3$2,757 SGD
Retailer 6$2,858 SGD
Retailer 10$2,871 SGD
Retailer 12$2,917 SGD
Retailer 2$2,976 SGD
Retailer 4$3,160 SGD
Retailer 9$3,344 SGD
Retailer 7$3,723 SGD
MOH London$4,802 SGD

30 data points across 12 retailers

14 retailers$2,051 SGD to $4,802 SGD

A
Cheapest Retailer
-
$2,051 SGD
A
Retailer 2
-
$2,154 SGD
View
B+
Retailer 3
-
$2,550 SGD
View
B+
Retailer 4
-
$2,598 SGD
View
Retailer 5
-
$2,757 SGD
View
Price last confirmed 9 days ago
B+
Retailer 6
-
$2,858 SGD
View
B+
Retailer 7
-
$2,871 SGD
View
B+
Retailer 8
-
$2,880 SGD
View
B+
Retailer 9
-
$2,917 SGD
View
B+
Retailer 10
-
$2,976 SGD
View
B
Retailer 11
-
$3,344 SGD
View
Retailer 12
-
$3,409 SGD
View
Price last confirmed 32 days ago
B
Retailer 13
-
$3,723 SGD
View
Most Expensive
B
MOH London
599C3FF43 · Nov 2
$4,802 SGD
£2,950 GBP
View
13 more retailers have this diamond
Prices start from $2,051 SGDSave up to $2,751 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 Radiant
$2,051 SGD