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Round|Natural|GIA

1.20ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 5556715240

Certificate GIA 5556715240

Diamond specifications and retailer prices

From $2,411 SGD
As of November 6, 2026
Save $3,199 SGD (57%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $6,695 SGD at NZ Jewellers · As of September 28, 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 5556715240. Listed at 20 retailers as of November 2, 2026, with a 133% 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 angle34°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 5556715240
Dimensions6.85 × 6.88 × 4.16 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Needle
Top View
6.85 mm6.88 mm1.20 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5556715240
Side View
Table 61.0%Crown 34°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 60.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $2,504 SGD|Low: $2,411 SGD|High: $5,670 SGD|Avg: $3,456 SGD|-2.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 11$2,411 SGD
Retailer 1$2,504 SGD
Retailer 8$2,807 SGD
Retailer 3$2,955 SGD
Retailer 12$2,980 SGD
Retailer 2$3,007 SGD
Retailer 5$3,346 SGD
Retailer 6$3,368 SGD
Retailer 4$3,583 SGD
Retailer 7$3,909 SGD
Retailer 9$3,986 SGD
Retailer 10$5,610 SGD

32 data points across 12 retailers

20 retailers$2,411 SGD to $5,610 SGD

A
Cheapest Retailer
-
$2,411 SGD
A
Retailer 2
-
$2,504 SGD
View
A
Retailer 3
-
$2,807 SGD
View
B+
Retailer 4
-
$2,955 SGD
View
Final sale: no returns
B+
Retailer 5
-
$2,980 SGD
View
B+
Retailer 6
-
$2,980 SGD
View
B+
Retailer 7
-
$3,007 SGD
View
Retailer 8
-
$3,203 SGD
View
Price last confirmed 39 days ago
B+
Retailer 9
-
$3,294 SGD
View
B+
Retailer 10
-
$3,346 SGD
View
Retailer 11
-
$3,350 SGD
View
Price last confirmed 38 days ago
B+
Retailer 12
-
$3,368 SGD
View
B+
Retailer 13
-
$3,382 SGD
View
Retailer 14
-
$3,583 SGD
View
Price last confirmed 31 days ago
Retailer 15
-
$3,695 SGD
View
Price last confirmed 38 days ago
B+
Retailer 16
-
$3,909 SGD
View
B+
Retailer 17
-
$3,986 SGD
View
B
Retailer 18
-
$5,610 SGD
View
Retailer 19
-
$6,695 SGD
View
Price last confirmed 34 days ago
Most Expensive
NZ Jewellers
6fdbfa8c-9bca-494e-ab38-9a8eada9774d · Sep 28
$6,695 SGD
$5,224 USD
View
Price last confirmed 39 days ago
19 more retailers have this diamond
Prices start from $2,411 SGDSave up to $3,199 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
$2,411 SGD