CaratHunter
Plans
Radiant|Natural|GIA

1.20ct J SI2 Radiant Natural Diamond

EX • J/SI2 • GIA 2458689031

Certificate GIA 2458689031

Diamond specifications and retailer prices

From $1,479 SGD
$1,157 USD
As of October 31, 2026
Save $1,456 SGD (50%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $3,908 SGD at NZ Jewellers · As of September 20, 2026
View at NZ Jewellers

About this 1.2ct natural radiant diamond

This 1.2ct 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 2458689031. Listed at 7 retailers as of October 31, 2026, with a 98% 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

1.20
Carat
J
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 2458689031
Dimensions6.56 × 5.24 × 3.61 mm
L/W Ratio1.25
Top View
6.56 mm5.24 mm1.20 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceStrong
CertificateGIA 2458689031
Side View
Table 66.0%CrownGirdlePavilionCulet: NoneDepth 68.9%

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 31
Current: $2,935 SGD|Low: $1,179 SGD|High: $2,970 SGD|Avg: $1,837 SGD|-0.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 9$1,179 SGD
Retailer 4$1,479 SGD
Retailer 7$1,538 SGD
Retailer 5$1,602 SGD
Retailer 2$1,829 SGD
Retailer 8$1,906 SGD
Retailer 6$1,975 SGD
Retailer 3$2,238 SGD
Retailer 1$2,935 SGD

31 data points across 9 retailers

7 retailers$1,479 SGD to $2,935 SGD

A
Cheapest Retailer
-
$1,479 SGD
$1,157 USD
Final sale: no returns
Retailer 2
-
$1,602 SGD
$1,253 USD
View
Price last confirmed 40 days ago
B+
Retailer 3
-
$1,829 SGD
£1,127 GBP
View
Retailer 4
-
$1,849 SGD
$1,446 USD
View
Price last confirmed 38 days ago
B+
Retailer 5
-
$2,238 SGD
€1,667 EUR
View
B+
Retailer 6
-
$2,935 SGD
£1,808 GBP
View
Most Expensive
NZ Jewellers
9d061dce-021d-488f-8260-ce79ce014297 · Sep 20
$3,908 SGD
$3,057 USD
View
Price last confirmed 41 days ago
6 more retailers have this diamond
Prices start from $1,479 SGDSave up to $1,456 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
1.20ct Radiant
$1,479 SGD