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Round|Natural|GIA

1.20ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 1498706583

Certificate GIA 1498706583

Diamond specifications and retailer prices

From $3,121 SGD
As of November 6, 2026
Save $3,787 SGD (55%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $6,908 SGD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.2ct natural round diamond

This 1.2ct natural round sits in the classic one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1498706583. Listed at 21 retailers as of November 5, 2026, with prices from $3,121 to $6,908, a $3,787 spread on the same certified stone. NZ Jewellers lists it at $6,908. 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

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle35°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1498706583
Dimensions6.74 × 6.78 × 4.22 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Girdle conditionFaceted
Culet sizeNone
Top View
6.74 mm6.78 mm1.20 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1498706583
Side View
Table 57.0%Crown 35°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $3,283 SGD|Low: $2,859 SGD|High: $6,710 SGD|Avg: $4,228 SGD|+8.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 2$3,121 SGD
Retailer 1$3,283 SGD
Retailer 9$3,374 SGD
Retailer 3$3,695 SGD
Retailer 4$4,077 SGD
Retailer 5$4,105 SGD
Retailer 10$4,236 SGD
Retailer 7$4,328 SGD
Retailer 6$4,839 SGD
Retailer 8$6,613 SGD

43 data points across 10 retailers

21 retailers$3,121 SGD to $6,908 SGD

B+
Cheapest Retailer
-
$3,121 SGD
B+
Retailer 2
-
$3,125 SGD
View
B+
Retailer 3
-
$3,217 SGD
View
B+
Retailer 4
-
$3,283 SGD
View
Final sale: no returns
Retailer 5
-
$3,374 SGD
View
Price last confirmed 8 days ago
B+
Retailer 6
-
$3,524 SGD
View
Retailer 7
-
$3,592 SGD
View
Price last confirmed 8 days ago
B+
Retailer 8
-
$3,592 SGD
View
B
Retailer 9
-
$3,633 SGD
View
B
Retailer 10
-
$3,695 SGD
View
B
Retailer 11
-
$4,037 SGD
View
B
Retailer 12
-
$4,037 SGD
View
B+
Retailer 13
-
$4,077 SGD
View
B
Retailer 14
-
$4,105 SGD
View
B
Retailer 15
-
$4,142 SGD
View
B
Retailer 16
-
$4,165 SGD
View
Retailer 17
-
$4,236 SGD
View
Price last confirmed 30 days ago
B
Retailer 18
-
$4,328 SGD
View
B
Retailer 19
-
$4,839 SGD
View
B
Retailer 20
-
$6,613 SGD
View
Most Expensive
B
NZ Jewellers
39fc103d-9290-4738-bcea-93388e39eadb · Nov 5
$6,908 SGD
$5,390 USD
View
20 more retailers have this diamond
Prices start from $3,121 SGDSave up to $3,787 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 Round
$3,121 SGD