Heart|Natural|GIA

1.20ct F SI1 Heart Natural Diamond

ID • F/SI1 • GIA 25

Certificate GIA 25

Diamond specifications and retailer prices

From $4,245 SGD
As of November 6, 2026
Save $1,625 SGD (28%) vs most expensive(unlock to see where)
29 retailers carry this diamond
Most expensive: $9,782 SGD at NZ Jewellers · As of October 30, 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 F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA. Listed at 29 retailers as of November 5, 2026, with a 38% 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
F
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 25
Dimensions6.41 × 7.56 × 4.14 mm
L/W Ratio1.18
Top View
6.41 mm7.56 mm1.20 ctF / SI1
OriginNatural
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 25
Side View
Table 62.0%CrownGirdle: MED-ETKPavilionCulet: NoneDepth 54.8%

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: $9,782 SGD|Low: $4,245 SGD|High: $9,782 SGD|Avg: $5,617 SGD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 7$4,245 SGD
Retailer 8$4,318 SGD
Retailer 4$5,087 SGD
Retailer 5$5,087 SGD
Retailer 6$5,087 SGD
Retailer 2$5,447 SGD
Retailer 3$5,870 SGD
NZ Jewellers$9,782 SGD

24 data points across 8 retailers

29 retailers$4,245 SGD to $5,870 SGD

B+
Cheapest Retailer
-
$4,245 SGD
B+
Retailer 2
-
$4,318 SGD
View
Retailer 3
-
$5,087 SGD
View
Price last confirmed 9 days ago
B
Retailer 4
-
$5,087 SGD
View
Retailer 5
-
$5,087 SGD
View
Price last confirmed 14 days ago
Retailer 6
-
$5,087 SGD
View
Price last confirmed 9 days ago
Retailer 7
-
$5,087 SGD
View
Price last confirmed 22 days ago
Retailer 8
-
$5,087 SGD
View
Price last confirmed 12 days ago
Retailer 9
-
$5,087 SGD
View
Price last confirmed 9 days ago
Retailer 10
-
$5,087 SGD
View
Price last confirmed 43 days ago
Retailer 11
-
$5,087 SGD
View
Price last confirmed 16 days ago
B
Retailer 12
-
$5,087 SGD
View
Retailer 13
-
$5,087 SGD
View
Price last confirmed 31 days ago
B
Retailer 14
-
$5,447 SGD
View
Retailer 15
-
$5,870 SGD
View
Price last confirmed 15 days ago
B
Retailer 16
-
$5,870 SGD
View
Retailer 17
-
$5,870 SGD
View
Price last confirmed 11 days ago
Retailer 18
-
$5,870 SGD
View
Price last confirmed 57 days ago
Retailer 19
-
$5,870 SGD
View
Price last confirmed 44 days ago
Retailer 20
-
$5,870 SGD
View
Price last confirmed 31 days ago
B
Retailer 21
-
$5,870 SGD
View
Retailer 22
-
$5,870 SGD
View
Price last confirmed 22 days ago
Retailer 23
-
$5,870 SGD
View
Price last confirmed 24 days ago
Retailer 24
-
$9,782 SGD
View
Price last confirmed 32 days ago
Retailer 25
-
$9,782 SGD
View
Price last confirmed 43 days ago
Retailer 26
-
$9,782 SGD
View
Price last confirmed 14 days ago
Retailer 27
-
$9,782 SGD
View
Price last confirmed 11 days ago
Retailer 28
-
$9,782 SGD
View
Price last confirmed 24 days ago
Most Expensive
NZ Jewellers
7a147ca9-5ff2-4c41-bc9c-94cc60f8a822 · Oct 30
$9,782 SGD
$7,633 USD
View
Price last confirmed 7 days ago
28 more retailers have this diamond
Prices start from $4,245 SGDSave up to $1,625 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 Heart
$4,245 SGD