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Heart|Natural|GIA

1.21ct J SI1 Heart Natural Diamond

EX • J/SI1 • GIA 2245042739

Certificate GIA 2245042739

Diamond specifications and retailer prices

From $2,066 SGD
As of November 6, 2026
Save $3,813 SGD (65%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $5,879 SGD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.21ct natural heart diamond

This 1.21ct natural heart sits in the classic one-carat band, graded J 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 2245042739. Listed at 12 retailers as of November 5, 2026, with prices from $2,066 to $5,879, a $3,813 spread on the same certified stone. NZ Jewellers lists it at $5,879. 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

1.21
Carat
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
Pavilion angle38.94°
OriginNatural
Grading LabGIA
CertificateGIA 2245042739
Dimensions6.61 × 7.21 × 4.29 mm
L/W Ratio1.09
Key to symbols
Twinning Wisp, Feather, Crystal, Needle
Top View
6.61 mm7.21 mm1.21 ctJ / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 2245042739
Side View
Table 62.0%CrownGirdle: THK-VTKPavilion 38.94°Culet: NoneDepth 59.5%

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: $5,879 SGD|Low: $2,066 SGD|High: $6,281 SGD|Avg: $3,543 SGD|-6.4%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 10$2,066 SGD
Retailer 3$2,666 SGD
Retailer 2$2,727 SGD
Retailer 6$2,812 SGD
Retailer 5$2,873 SGD
Retailer 9$2,941 SGD
Retailer 7$3,091 SGD
Retailer 4$3,483 SGD
Retailer 11$4,292 SGD
Retailer 8$4,914 SGD
NZ Jewellers$5,879 SGD

38 data points across 11 retailers

12 retailers$2,066 SGD to $5,879 SGD

A
Cheapest Retailer
-
$2,066 SGD
B+
Retailer 2
-
$2,666 SGD
View
B+
Retailer 3
-
$2,727 SGD
View
B+
Retailer 4
-
$2,812 SGD
View
B+
Retailer 5
-
$2,873 SGD
View
B+
Retailer 6
-
$2,941 SGD
View
B+
Retailer 7
-
$3,091 SGD
View
B
Retailer 8
-
$3,163 SGD
View
B+
Retailer 9
-
$3,483 SGD
View
B
Retailer 10
-
$4,292 SGD
View
B
Retailer 11
-
$4,914 SGD
View
Most Expensive
B
NZ Jewellers
4f1787ab-5746-4b1c-9857-b23407ac4cfd · Nov 5
$5,879 SGD
$4,587 USD
View
11 more retailers have this diamond
Prices start from $2,066 SGDSave up to $3,813 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
1.21ct Heart
$2,066 SGD