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Radiant|Natural|GIA

1.21ct I SI2 Radiant Natural Diamond

EX • I/SI2 • GIA 2557742575

Certificate GIA 2557742575

Diamond specifications and retailer prices

From $2,394 SGD
As of November 6, 2026
Save $3,345 SGD (58%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $6,867 SGD at NZ Jewellers · As of October 11, 2026
View at NZ Jewellers

About this 1.21ct natural radiant diamond

This 1.21ct natural radiant sits in the classic one-carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2557742575. Listed at 12 retailers as of November 4, 2026, with a 140% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2557742575
Dimensions7.22 × 5.34 × 3.51 mm
L/W Ratio1.35
Girdle conditionPolished
Top View
7.22 mm5.34 mm1.21 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2557742575
Side View
Table 67.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 65.7%

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: $6,867 SGD|Low: $2,379 SGD|High: $6,972 SGD|Avg: $3,792 SGD|-1.5%
NZ Jewellers
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 9$2,394 SGD
Retailer 12$2,908 SGD
Retailer 11$3,031 SGD
Retailer 2$3,043 SGD
Retailer 5$3,230 SGD
Retailer 3$3,246 SGD
Retailer 6$3,335 SGD
Retailer 4$3,627 SGD
Retailer 7$3,876 SGD
Retailer 10$4,775 SGD
Retailer 8$5,739 SGD
NZ Jewellers$6,867 SGD

15 data points across 12 retailers

12 retailers$2,394 SGD to $5,739 SGD

A
Cheapest Retailer
-
$2,394 SGD
A
Retailer 2
-
$2,908 SGD
View
B+
Retailer 3
-
$3,031 SGD
View
Final sale: no returns
A
Retailer 4
-
$3,043 SGD
View
B+
Retailer 5
-
$3,230 SGD
View
B+
Retailer 6
-
$3,246 SGD
View
B+
Retailer 7
-
$3,335 SGD
View
B+
Retailer 8
-
$3,627 SGD
View
B+
Retailer 9
-
$3,876 SGD
View
B
Retailer 10
-
$4,775 SGD
View
B
Retailer 11
-
$5,739 SGD
View
Most Expensive
NZ Jewellers
538ffc4d-5d2d-4a9b-8e3d-4341c6573678 · Oct 11
$6,867 SGD
$5,358 USD
View
Price last confirmed 26 days ago
11 more retailers have this diamond
Prices start from $2,394 SGDSave up to $3,345 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
$2,394 SGD