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Heart|Natural|GIA

1.33ct I SI2 Heart Natural Diamond

EX • I/SI2 • GIA 6512405390

Certificate GIA 6512405390

Diamond specifications and retailer prices

From $3,852 SGD
As of November 4, 2026
Save $4,883 SGD (56%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $8,735 SGD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.33ct natural heart diamond

This 1.33ct natural heart sits in the one-and-a-quarter to one-and-a-half carat band, graded I 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 6512405390. Listed at 19 retailers as of November 4, 2026, with prices from $3,852 to $8,735, a $4,883 spread on the same certified stone. NZ Jewellers lists it at $8,735. 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

1.33
Carat
I
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle43.68°
Pavilion angle39.45°
OriginNatural
Grading LabGIA
CertificateGIA 6512405390
Dimensions6.68 × 7.51 × 4.47 mm
L/W Ratio1.12
Top View
6.68 mm7.51 mm1.33 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6512405390
Side View
Table 60.0%Crown 43.68°Girdle: MED-THKPavilion 39.45°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 4
Current: $8,735 SGD|Low: $3,292 SGD|High: $8,735 SGD|Avg: $5,419 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 12$3,879 SGD
Retailer 8$3,952 SGD
Retailer 9$4,192 SGD
Retailer 11$4,542 SGD
Retailer 13$4,542 SGD
Retailer 10$4,718 SGD
Retailer 5$4,805 SGD
Retailer 2$5,078 SGD
Retailer 3$5,242 SGD
Retailer 6$5,758 SGD
Retailer 4$7,245 SGD
Retailer 7$8,386 SGD
NZ Jewellers$8,735 SGD

44 data points across 13 retailers

19 retailers$3,852 SGD to $8,735 SGD

A
Cheapest Retailer
-
$3,852 SGD
A
Retailer 2
-
$3,879 SGD
View
B+
Retailer 3
-
$3,951 SGD
View
B+
Retailer 4
-
$3,952 SGD
View
B+
Retailer 5
-
$4,032 SGD
View
B+
Retailer 6
-
$4,192 SGD
View
Final sale: no returns
B+
Retailer 7
-
$4,542 SGD
View
Retailer 8
-
$4,542 SGD
View
Price last confirmed 9 days ago
B+
Retailer 9
-
$4,550 SGD
View
B+
Retailer 10
-
$4,718 SGD
View
Retailer 11
-
$4,805 SGD
View
Price last confirmed 15 days ago
B+
Retailer 12
-
$4,939 SGD
View
B+
Retailer 13
-
$5,078 SGD
View
Retailer 14
-
$5,242 SGD
View
Price last confirmed 62 days ago
B
Retailer 15
-
$5,242 SGD
View
B
Retailer 16
-
$5,758 SGD
View
B
Retailer 17
-
$7,245 SGD
View
B
Retailer 18
-
$8,386 SGD
View
Most Expensive
B
NZ Jewellers
f5f8786c-eb15-4f22-ba81-4ec7ed7f19c8 · Nov 5
$8,735 SGD
$6,816 USD
View
18 more retailers have this diamond
Prices start from $3,852 SGDSave up to $4,883 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
1.33ct Heart
$3,852 SGD