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Heart|Natural|GIA

0.51ct H SI1 Heart Natural Diamond

EX • H/SI1 • GIA 3545408166

Certificate GIA 3545408166

Diamond specifications and retailer prices

From $508 SGD
As of November 6, 2026
Save $986 SGD (66%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $2,057 SGD at NZ Jewellers · As of September 25, 2026
View at NZ Jewellers

About this 0.51ct natural heart diamond

This 0.51ct natural heart sits in the half to three-quarter 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 3545408166. Listed at 13 retailers as of November 4, 2026, with a 194% 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

0.51
Carat
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
Pavilion angle42°
OriginNatural
Grading LabGIA
CertificateGIA 3545408166
Dimensions4.87 × 5.71 × 3.35 mm
L/W Ratio1.17
Top View
4.87 mm5.71 mm0.51 ctH / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 3545408166
Side View
Table 59.0%CrownGirdle: MED-VTKPavilion 42°Culet: NoneDepth 58.7%

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: $651 SGD|Low: $434 SGD|High: $1,594 SGD|Avg: $825 SGD|-6.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 12$508 SGD
Retailer 2$590 SGD
Retailer 3$597 SGD
Retailer 7$618 SGD
Retailer 5$637 SGD
Retailer 1$651 SGD
Retailer 6$695 SGD
Retailer 10$902 SGD
Retailer 11$904 SGD
Retailer 8$1,005 SGD
Retailer 4$1,018 SGD
Retailer 9$1,493 SGD

36 data points across 12 retailers

13 retailers$508 SGD to $1,493 SGD

A
Cheapest Retailer
-
$508 SGD
A
Retailer 2
-
$590 SGD
View
B+
Retailer 3
-
$597 SGD
View
Final sale: no returns
A
Retailer 4
-
$618 SGD
View
A
Retailer 5
-
$637 SGD
View
B+
Retailer 6
-
$651 SGD
View
B+
Retailer 7
-
$695 SGD
View
B+
Retailer 8
-
$902 SGD
View
B+
Retailer 9
-
$904 SGD
View
B
Retailer 10
-
$1,005 SGD
View
Retailer 11
-
$1,018 SGD
View
Price last confirmed 34 days ago
B
Retailer 12
-
$1,493 SGD
View
Most Expensive
NZ Jewellers
90cec75c-5fc3-44e1-aea5-17ebe829a068 · Sep 25
$2,057 SGD
$1,605 USD
View
Price under review
12 more retailers have this diamond
Prices start from $508 SGDSave up to $986 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
0.51ct Heart
$508 SGD