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Round|Natural|GIA

1.20ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 1553140319

Certificate GIA 1553140319

Diamond specifications and retailer prices

From $2,362 SGD
As of November 6, 2026
Save $3,076 SGD (57%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $6,573 SGD at NZ Jewellers · As of October 3, 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 1553140319. Listed at 20 retailers as of November 4, 2026, with a 130% 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
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 1553140319
Dimensions6.81 × 6.87 × 4.12 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Crystal, Cloud, Cavity, Needle
Top View
6.81 mm6.87 mm1.20 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1553140319
Side View
Table 62.0%Crown 33°Girdle: Slightly ThickPavilion 41°Culet: NoneDepth 60.2%

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: Nov 6
Current: $2,458 SGD|Low: $2,362 SGD|High: $5,574 SGD|Avg: $3,466 SGD|-3.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 12$2,362 SGD
Retailer 1$2,458 SGD
Retailer 10$2,754 SGD
Retailer 2$2,871 SGD
Retailer 13$2,931 SGD
Retailer 4$3,204 SGD
Retailer 7$3,273 SGD
Retailer 6$3,285 SGD
Retailer 3$3,291 SGD
Retailer 9$3,797 SGD
Retailer 8$3,863 SGD
Retailer 5$3,870 SGD
Retailer 11$5,438 SGD

32 data points across 13 retailers

20 retailers$2,362 SGD to $5,438 SGD

A
Cheapest Retailer
-
$2,362 SGD
A
Retailer 2
-
$2,458 SGD
View
A
Retailer 3
-
$2,754 SGD
View
B+
Retailer 4
-
$2,871 SGD
View
Final sale: no returns
B+
Retailer 5
-
$2,931 SGD
View
B+
Retailer 6
-
$2,949 SGD
View
B+
Retailer 7
-
$2,954 SGD
View
Retailer 8
-
$3,144 SGD
View
Price last confirmed 39 days ago
B+
Retailer 9
-
$3,204 SGD
View
B+
Retailer 10
-
$3,273 SGD
View
B+
Retailer 11
-
$3,285 SGD
View
Retailer 12
-
$3,289 SGD
View
Price last confirmed 38 days ago
B+
Retailer 13
-
$3,291 SGD
View
Retailer 14
-
$3,628 SGD
View
Price last confirmed 38 days ago
B+
Retailer 15
-
$3,797 SGD
View
B+
Retailer 16
-
$3,863 SGD
View
Retailer 17
-
$3,870 SGD
View
Price last confirmed 30 days ago
B
Retailer 18
-
$5,438 SGD
View
Retailer 19
-
$6,573 SGD
View
Price last confirmed 39 days ago
Most Expensive
NZ Jewellers
8682ebd1-3440-4309-9dfb-944ef4ce9066 · Oct 3
$6,573 SGD
$5,129 USD
View
Price last confirmed 34 days ago
19 more retailers have this diamond
Prices start from $2,362 SGDSave up to $3,076 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 Round
$2,362 SGD