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Radiant|Natural|GIA

1.21ct I SI1 Radiant Natural Diamond

EX • I/SI1 • GIA 2231483721

Certificate GIA 2231483721

Diamond specifications and retailer prices

From $3,716 SGD
$2,906 USD
As of November 2, 2026
Save $4,092 SGD (52%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $7,809 SGD at NZ Jewellers · As of October 30, 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 SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2231483721. Listed at 15 retailers as of October 30, 2026, with prices from $3,716 to $7,809, a $4,092 spread on the same certified stone. NZ Jewellers lists it at $7,809. 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
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2231483721
Dimensions6.94 × 5.28 × 3.69 mm
L/W Ratio1.31
Culet sizeNone
Top View
6.94 mm5.28 mm1.21 ctI / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 2231483721
Side View
Table 68.0%CrownGirdle: VTK-VTKPavilionCulet: NoneDepth 70.0%

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 2
Current: $7,809 SGD|Low: $3,716 SGD|High: $7,809 SGD|Avg: $4,945 SGD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
November 2, 2026
Retailer 3$3,716 SGD
Retailer 13$4,061 SGD
Retailer 15$4,061 SGD
Retailer 4$4,085 SGD
Retailer 14$4,217 SGD
Retailer 6$4,251 SGD
Retailer 5$4,445 SGD
Retailer 9$4,685 SGD
Retailer 12$4,686 SGD
Retailer 7$4,724 SGD
Retailer 16$5,080 SGD
Retailer 8$5,100 SGD
Retailer 2$5,246 SGD
Retailer 11$5,510 SGD
Retailer 10$7,496 SGD
NZ Jewellers$7,809 SGD

18 data points across 16 retailers

15 retailers$3,716 SGD to $7,809 SGD

B+
Cheapest Retailer
-
$3,716 SGD
$2,906 USD
B+
Retailer 2
-
$4,061 SGD
$3,175 USD
View
B+
Retailer 3
-
$4,061 SGD
$3,175 USD
View
B
Retailer 4
-
$4,085 SGD
$3,194 USD
View
B
Retailer 5
-
$4,217 SGD
$3,297 USD
View
B
Retailer 6
-
$4,251 SGD
$3,324 USD
View
B+
Retailer 7
-
$4,445 SGD
CA$4,827 CAD
View
B
Retailer 8
-
$4,685 SGD
£2,884 GBP
View
B
Retailer 9
-
$4,686 SGD
$3,664 USD
View
B
Retailer 10
-
$4,724 SGD
$3,694 USD
View
Retailer 11
-
$5,080 SGD
$3,972 USD
View
Price last confirmed 10 days ago
B
Retailer 12
-
$5,246 SGD
€3,907 EUR
View
B
Retailer 13
-
$5,510 SGD
ZAR 69,598 ZAR
View
B
Retailer 14
-
$7,496 SGD
£4,615 GBP
View
Most Expensive
B
NZ Jewellers
304b2cca-abd9-424a-9469-a079e08a804e · Oct 30
$7,809 SGD
$6,106 USD
View
14 more retailers have this diamond
Prices start from $3,716 SGDSave up to $4,092 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.

B+
1.21ct Radiant
$3,716 SGD