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Heart|Natural|GIA

1.20ct H SI1 Heart Natural Diamond

ID • H/SI1 • GIA 3545938134

Certificate GIA 3545938134

Diamond specifications and retailer prices

From $2,722 SGD
As of November 6, 2026
Save $3,518 SGD (56%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $7,509 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 H 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 3545938134. Listed at 22 retailers as of November 4, 2026, with a 129% 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
H
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 3545938134
Dimensions6.60 × 7.51 × 4.44 mm
L/W Ratio1.14
Top View
6.60 mm7.51 mm1.20 ctH / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 3545938134
Side View
Table 63.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 59.1%

Caratlytics Score

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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: $7,509 SGD|Low: $2,722 SGD|High: $7,509 SGD|Avg: $4,412 SGD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
November 6, 2026
Retailer 3$2,722 SGD
Retailer 2$2,834 SGD
Retailer 13$3,201 SGD
Retailer 5$3,296 SGD
Retailer 14$3,364 SGD
Retailer 9$3,464 SGD
Retailer 8$3,591 SGD
Retailer 4$3,753 SGD
Retailer 10$3,776 SGD
Retailer 11$3,779 SGD
Retailer 16$3,883 SGD
Retailer 7$4,145 SGD
Retailer 12$4,359 SGD
Retailer 15$6,240 SGD
Retailer 6$7,388 SGD
NZ Jewellers$7,509 SGD

24 data points across 16 retailers

22 retailers$2,722 SGD to $6,240 SGD

A
Cheapest Retailer
-
$2,722 SGD
A
Retailer 2
-
$2,834 SGD
View
B+
Retailer 3
-
$3,201 SGD
View
B+
Retailer 4
-
$3,296 SGD
View
Final sale: no returns
B+
Retailer 5
-
$3,364 SGD
View
B+
Retailer 6
-
$3,400 SGD
View
B+
Retailer 7
-
$3,403 SGD
View
B+
Retailer 8
-
$3,464 SGD
View
Retailer 9
-
$3,591 SGD
View
Price last confirmed 20 days ago
Retailer 10
-
$3,628 SGD
View
Price last confirmed 22 days ago
B+
Retailer 11
-
$3,753 SGD
View
Retailer 12
-
$3,768 SGD
View
Price last confirmed 22 days ago
B+
Retailer 13
-
$3,776 SGD
View
B+
Retailer 14
-
$3,779 SGD
View
B+
Retailer 15
-
$3,855 SGD
View
B+
Retailer 16
-
$3,883 SGD
View
Retailer 17
-
$4,087 SGD
View
Price last confirmed 31 days ago
Retailer 18
-
$4,145 SGD
View
Price last confirmed 19 days ago
B+
Retailer 19
-
$4,359 SGD
View
B
Retailer 20
-
$6,240 SGD
View
Retailer 21
-
$7,388 SGD
View
Price last confirmed 10 days ago
Most Expensive
NZ Jewellers
dd034e2e-e7de-4487-a812-4eff1fbf8c7e · Oct 18
$7,509 SGD
$5,859 USD
View
Price last confirmed 20 days ago
21 more retailers have this diamond
Prices start from $2,722 SGDSave up to $3,518 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
$2,722 SGD