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Radiant|Natural|GIA

1.21ct J SI2 Radiant Natural Diamond

EX • J/SI2 • GIA 1555663793

Certificate GIA 1555663793

Diamond specifications and retailer prices

From $2,171 SGD
$1,698 USD
As of October 28, 2026
Save $1,719 SGD (44%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $3,890 SGD at Helzberg Diamonds · As of October 28, 2026
View at Helzberg Diamonds

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 SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1555663793. Listed at 10 retailers as of October 28, 2026, with prices from $2,171 to $3,890, a $1,719 spread on the same certified stone. Helzberg Diamonds lists it at $3,890. 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
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1555663793
Dimensions7.41 × 5.28 × 3.45 mm
L/W Ratio1.40
Culet sizeNone
Top View
7.41 mm5.28 mm1.21 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1555663793
Side View
Table 68.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 65.4%

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: Oct 28
Current: $3,890 SGD|Low: $2,171 SGD|High: $4,216 SGD|Avg: $3,006 SGD|-7.7%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 29, 2026
Retailer 4$2,171 SGD
Retailer 5$2,171 SGD
Retailer 9$2,363 SGD
Retailer 6$2,386 SGD
Retailer 7$2,604 SGD
Retailer 3$2,723 SGD
Retailer 8$2,839 SGD
Retailer 2$3,058 SGD
Retailer 10$3,573 SGD
Helzberg Diamonds$3,890 SGD

37 data points across 10 retailers

10 retailers$2,171 SGD to $3,890 SGD

A
Cheapest Retailer
-
$2,171 SGD
$1,698 USD
A
Retailer 2
-
$2,171 SGD
$1,698 USD
View
A
Retailer 3
-
$2,363 SGD
View
A
Retailer 4
-
$2,386 SGD
£1,469 GBP
View
B+
Retailer 5
-
$2,604 SGD
$2,037 USD
View
B+
Retailer 6
-
$2,723 SGD
$2,130 USD
View
B+
Retailer 7
-
$2,839 SGD
$2,221 USD
View
B+
Retailer 8
-
$3,058 SGD
€2,278 EUR
View
B+
Retailer 9
-
$3,573 SGD
$2,795 USD
View
Most Expensive
B
Helzberg Diamonds
XZRHLLLMMJNPJ · Oct 28
$3,890 SGD
$3,043 USD
View
9 more retailers have this diamond
Prices start from $2,171 SGDSave up to $1,719 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
$2,171 SGD