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Heart|Natural|GIA

1.20ct J SI2 Heart Natural Diamond

ID • J/SI2 • GIA 1539286592

Certificate GIA 1539286592

Diamond specifications and retailer prices

From $1,820 SGD
As of November 6, 2026
Save $2,379 SGD (57%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $5,847 SGD at NZ Jewellers · As of October 18, 2026
View at NZ Jewellers

About this 1.2ct natural heart diamond

This 1.2ct natural heart 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 1539286592. Listed at 15 retailers as of November 1, 2026, with a 131% 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
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1539286592
Dimensions7.36 × 6.60 × 4.26 mm
L/W Ratio1.12
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Twinning Wisp, Crystal, Cavity, Needle, Indented Natural
Top View
7.36 mm6.60 mm1.20 ctJ / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1539286592
Side View
Table 63.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 57.8%

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: $5,847 SGD|Low: $1,820 SGD|High: $5,907 SGD|Avg: $2,842 SGD|-1.0%
NZ Jewellers
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 8$1,820 SGD
Retailer 2$1,910 SGD
Retailer 10$2,199 SGD
Retailer 6$2,274 SGD
Retailer 3$2,397 SGD
Retailer 7$2,486 SGD
Retailer 12$2,508 SGD
Retailer 9$2,558 SGD
Retailer 5$2,588 SGD
Retailer 4$2,766 SGD
Retailer 11$4,199 SGD
NZ Jewellers$5,847 SGD

35 data points across 12 retailers

15 retailers$1,820 SGD to $4,199 SGD

A
Cheapest Retailer
-
$1,820 SGD
A
Retailer 2
-
$1,910 SGD
View
A
Retailer 3
-
$2,199 SGD
View
Final sale: no returns
A
Retailer 4
-
$2,274 SGD
View
B+
Retailer 5
-
$2,302 SGD
View
Retailer 6
-
$2,397 SGD
View
Price last confirmed 22 days ago
Retailer 7
-
$2,397 SGD
View
Price last confirmed 20 days ago
B+
Retailer 8
-
$2,486 SGD
View
Retailer 9
-
$2,508 SGD
View
Price last confirmed 22 days ago
B+
Retailer 10
-
$2,522 SGD
View
B+
Retailer 11
-
$2,558 SGD
View
B+
Retailer 12
-
$2,588 SGD
View
Retailer 13
-
$2,766 SGD
View
Price last confirmed 19 days ago
B
Retailer 14
-
$4,199 SGD
View
Most Expensive
NZ Jewellers
258dd2b5-1842-4f77-85bb-64125eaa28cf · Oct 18
$5,847 SGD
$4,562 USD
View
Price last confirmed 20 days ago
14 more retailers have this diamond
Prices start from $1,820 SGDSave up to $2,379 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 Heart
$1,820 SGD