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Heart|Natural|GIA

0.51ct H SI1 Heart Natural Diamond

EX • H/SI1 • GIA 6525123597

Certificate GIA 6525123597

Diamond specifications and retailer prices

From $569 SGD
As of November 6, 2026
Save $1,225 SGD (68%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $2,438 SGD at NZ Jewellers · As of October 18, 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 6525123597. Listed at 20 retailers as of November 1, 2026, with a 215% 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
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6525123597
Dimensions4.90 × 5.40 × 3.20 mm
L/W Ratio1.10
Top View
4.90 mm5.40 mm0.51 ctH / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 6525123597
Side View
Table 57.0%CrownGirdle: MED-ETKPavilionCulet: NoneDepth 59.3%

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: $2,438 SGD|Low: $569 SGD|High: $2,438 SGD|Avg: $1,092 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
Retailer 14
November 7, 2026
Retailer 7$569 SGD
Retailer 6$716 SGD
Retailer 12$777 SGD
Retailer 4$837 SGD
Retailer 11$837 SGD
Retailer 14$897 SGD
Retailer 2$946 SGD
Retailer 8$948 SGD
Retailer 3$973 SGD
Retailer 5$1,019 SGD
Retailer 9$1,141 SGD
Retailer 10$1,200 SGD
Retailer 13$1,794 SGD
NZ Jewellers$2,438 SGD

31 data points across 14 retailers

20 retailers$569 SGD to $1,794 SGD

A
Cheapest Retailer
-
$569 SGD
B+
Retailer 2
-
$716 SGD
View
Final sale: no returns
B+
Retailer 3
-
$736 SGD
View
B+
Retailer 4
-
$777 SGD
View
Retailer 5
-
$837 SGD
View
Price last confirmed 9 days ago
B+
Retailer 6
-
$837 SGD
View
B
Retailer 7
-
$897 SGD
View
B
Retailer 8
-
$918 SGD
View
B
Retailer 9
-
$946 SGD
View
B
Retailer 10
-
$946 SGD
View
B
Retailer 11
-
$948 SGD
View
B
Retailer 12
-
$973 SGD
View
B
Retailer 13
-
$1,019 SGD
View
B
Retailer 14
-
$1,074 SGD
View
B
Retailer 15
-
$1,141 SGD
View
Retailer 16
-
$1,168 SGD
View
Price last confirmed 34 days ago
B
Retailer 17
-
$1,200 SGD
View
B
Retailer 18
-
$1,794 SGD
View
Retailer 19
-
$2,438 SGD
View
Price under review
Most Expensive
NZ Jewellers
8caf3824-5d87-4169-9d05-c92e3f72514f · Oct 18
$2,438 SGD
$1,902 USD
View
Price under review
19 more retailers have this diamond
Prices start from $569 SGDSave up to $1,225 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
$569 SGD