Radiant|Natural|GIA

1.20ct J SI1 Radiant Natural Diamond

EX • J/SI1 • GIA 6551145505

Certificate GIA 6551145505

Diamond specifications and retailer prices

From $2,666 SGD
As of November 5, 2026
Save $497 SGD (16%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $6,366 SGD at NZ Jewellers · As of October 17, 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 SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6551145505. Listed at 18 retailers as of November 5, 2026, with a relatively tight 19% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551145505
Dimensions7.09 × 5.43 × 3.73 mm
L/W Ratio1.31
Top View
7.09 mm5.43 mm1.20 ctJ / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 6551145505
Side View
Table 66.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 68.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 5
Current: $2,666 SGD|Low: $2,263 SGD|High: $5,398 SGD|Avg: $3,327 SGD|+0.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 5, 2026
Retailer 2$2,263 SGD
Retailer 5$2,408 SGD
Retailer 1$2,666 SGD
Retailer 9$2,809 SGD
Retailer 3$2,975 SGD
Retailer 4$3,190 SGD
Retailer 8$3,695 SGD
Retailer 10$3,747 SGD
Retailer 6$3,774 SGD
Retailer 7$5,362 SGD

27 data points across 10 retailers

18 retailers$2,666 SGD to $3,163 SGD

Retailer 1
-
$2,263 SGD
Price last confirmed 18 days ago
Retailer 2
-
$2,408 SGD
View
Price last confirmed 18 days ago
B+
Retailer 3
-
$2,666 SGD
View
B+
Retailer 4
-
$2,855 SGD
View
Retailer 5
-
$2,858 SGD
View
Price last confirmed 16 days ago
Retailer 6
-
$3,045 SGD
View
Price last confirmed 22 days ago
Retailer 7
-
$3,045 SGD
View
Price last confirmed 20 days ago
B
Retailer 8
-
$3,163 SGD
View
Retailer 9
-
$3,180 SGD
View
Price last confirmed 17 days ago
Retailer 10
-
$3,185 SGD
View
Price last confirmed 22 days ago
Retailer 11
-
$3,190 SGD
View
Price last confirmed 17 days ago
Retailer 12
-
$3,223 SGD
View
Price last confirmed 20 days ago
Retailer 13
-
$3,307 SGD
View
Price last confirmed 17 days ago
Retailer 14
-
$3,513 SGD
View
Price last confirmed 19 days ago
Retailer 15
-
$3,695 SGD
View
Price last confirmed 21 days ago
Retailer 16
-
$3,747 SGD
View
Price last confirmed 31 days ago
Retailer 17
-
$5,362 SGD
View
Price last confirmed 19 days ago
Most Expensive
NZ Jewellers
466366b3-12a7-4089-a98e-e167588e8ce3 · Oct 17
$6,366 SGD
$4,967 USD
View
Price last confirmed 20 days ago
17 more retailers have this diamond
Prices start from $2,666 SGDSave up to $497 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+
1.20ct Radiant
$2,666 SGD