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Heart|Natural|GIA

1.20ct H SI1 Heart Natural Diamond

EX • H/SI1 • GIA 11239679

Certificate GIA 11239679

Diamond specifications and retailer prices

From $5,356 SGD
As of November 4, 2026
Save $2,913 SGD (35%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $11,336 SGD at NZ Jewellers · As of November 5, 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 11239679. Listed at 14 retailers as of November 4, 2026, with a 54% 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
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishGood
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 11239679
Dimensions6.62 × 7.63 × 4.38 mm
L/W Ratio1.15
Girdle conditionFaceted
Culet sizeVery Small
Top View
6.62 mm7.63 mm1.20 ctH / SI1
OriginNatural
CutExcellent
PolishGood
SymmetryGood
FluorescenceNone
CertificateGIA 11239679
Side View
Table 60.0%CrownGirdle: MED-THKPavilionCulet: Very SmallDepth 57.5%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 4
Current: $11,336 SGD|Low: $4,723 SGD|High: $11,336 SGD|Avg: $7,332 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
November 7, 2026
Retailer 8$5,667 SGD
Retailer 12$5,793 SGD
Retailer 10$6,140 SGD
Retailer 11$6,140 SGD
Retailer 13$6,140 SGD
Retailer 2$6,698 SGD
Retailer 9$6,832 SGD
Retailer 4$7,014 SGD
Retailer 3$7,085 SGD
Retailer 5$7,479 SGD
Retailer 6$8,269 SGD
Retailer 7$10,767 SGD
NZ Jewellers$11,336 SGD

46 data points across 13 retailers

14 retailers$5,356 SGD to $8,269 SGD

B
Cheapest Retailer
-
$5,356 SGD
B
Retailer 2
-
$5,667 SGD
View
Final sale: no returns
B
Retailer 3
-
$5,793 SGD
View
B
Retailer 4
-
$6,140 SGD
View
B
Retailer 5
-
$6,140 SGD
View
Retailer 6
-
$6,140 SGD
View
Price last confirmed 9 days ago
B
Retailer 7
-
$6,698 SGD
View
Retailer 8
-
$6,832 SGD
View
Price last confirmed 29 days ago
B
Retailer 9
-
$7,014 SGD
View
B
Retailer 10
-
$7,085 SGD
View
Retailer 11
-
$7,479 SGD
View
Price last confirmed 15 days ago
B
Retailer 12
-
$8,269 SGD
View
Retailer 13
-
$10,767 SGD
View
Price under review
Most Expensive
NZ Jewellers
c10bbc6e-0c46-450a-9884-6dd09bc51576 · Nov 5
$11,336 SGD
$8,845 USD
View
Price under review
13 more retailers have this diamond
Prices start from $5,356 SGDSave up to $2,913 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
$5,356 SGD