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Heart|Natural|GIA

1.01ct I SI1 Heart Natural Diamond

EX • I/SI1 • GIA 6545375595

Certificate GIA 6545375595

Diamond specifications and retailer prices

From $1,542 SGD
As of November 6, 2026
Save $2,124 SGD (58%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $5,566 SGD at NZ Jewellers · As of September 25, 2026
View at NZ Jewellers

About this 1.01ct natural heart diamond

This 1.01ct natural heart sits in the classic one-carat band, graded I 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 6545375595. Listed at 20 retailers as of November 2, 2026, with a 138% 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

1.01
Carat
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Pavilion angle39.9°
OriginNatural
Grading LabGIA
CertificateGIA 6545375595
Dimensions6.28 × 7.08 × 3.95 mm
L/W Ratio1.13
Top View
6.28 mm7.08 mm1.01 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6545375595
Side View
Table 59.0%CrownGirdle: MED-VTKPavilion 39.9°Culet: NoneDepth 55.7%

Caratlytics Score

How it works →
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: $1,644 SGD|Low: $1,542 SGD|High: $3,820 SGD|Avg: $2,256 SGD|-8.7%
Retailer 1
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
November 6, 2026
Retailer 12$1,542 SGD
Retailer 1$1,644 SGD
Retailer 13$1,815 SGD
Retailer 4$1,819 SGD
Retailer 8$1,820 SGD
Retailer 6$1,846 SGD
Retailer 10$1,858 SGD
Retailer 3$1,919 SGD
Retailer 7$2,047 SGD
Retailer 11$2,154 SGD
Retailer 14$2,171 SGD
Retailer 15$2,535 SGD
Retailer 2$2,553 SGD
Retailer 9$3,144 SGD
Retailer 5$3,665 SGD

24 data points across 15 retailers

20 retailers$1,542 SGD to $3,665 SGD

A
Cheapest Retailer
-
$1,542 SGD
A
Retailer 2
-
$1,644 SGD
View
Final sale: no returns
A
Retailer 3
-
$1,815 SGD
View
A
Retailer 4
-
$1,819 SGD
View
A
Retailer 5
-
$1,820 SGD
View
A
Retailer 6
-
$1,846 SGD
View
A
Retailer 7
-
$1,858 SGD
View
A
Retailer 8
-
$1,919 SGD
View
A
Retailer 9
-
$2,047 SGD
View
A
Retailer 10
-
$2,154 SGD
View
A
Retailer 11
-
$2,171 SGD
View
Retailer 12
-
$2,327 SGD
View
Price last confirmed 16 days ago
Retailer 13
-
$2,500 SGD
View
Price last confirmed 44 days ago
B+
Retailer 14
-
$2,535 SGD
View
B+
Retailer 15
-
$2,553 SGD
View
B+
Retailer 16
-
$2,572 SGD
View
Retailer 17
-
$2,875 SGD
View
Price last confirmed 32 days ago
B+
Retailer 18
-
$3,144 SGD
View
B
Retailer 19
-
$3,665 SGD
View
Most Expensive
NZ Jewellers
c4d5302c-22d0-40c6-96c6-d9cefc8b3055 · Sep 25
$5,566 SGD
$4,343 USD
View
Price last confirmed 42 days ago
19 more retailers have this diamond
Prices start from $1,542 SGDSave up to $2,124 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
1.01ct Heart
$1,542 SGD