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Heart|Natural|GIA

0.51ct G SI2 Heart Natural Diamond

VG • G/SI2 • GIA 2536527442

Certificate GIA 2536527442

Diamond specifications and retailer prices

From $639 NZD
As of November 6, 2026
Save $1,382 NZD (68%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $3,359 NZD at NZ Jewellers · As of November 5, 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 G colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 2536527442. Listed at 15 retailers as of November 4, 2026, with a 216% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.51
Carat
G
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishGood
SymmetryGood
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 2536527442
Dimensions4.87 × 5.18 × 3.40 mm
L/W Ratio1.06
Top View
4.87 mm5.18 mm0.51 ctG / SI2
OriginNatural
CutVery Good
PolishGood
SymmetryGood
FluorescenceStrong
CertificateGIA 2536527442
Side View
Table 57.0%CrownGirdle: MED-ETKPavilionCulet: NoneDepth 65.7%

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: $3,359 NZD|Low: $639 NZD|High: $3,359 NZD|Avg: $1,232 NZD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 7, 2026
Retailer 5$639 NZD
Retailer 12$877 NZD
Retailer 7$913 NZD
Retailer 2$943 NZD
Retailer 11$943 NZD
Retailer 3$1,010 NZD
Retailer 6$1,041 NZD
Retailer 8$1,082 NZD
Retailer 4$1,097 NZD
Retailer 10$1,185 NZD
Retailer 9$2,020 NZD
NZ Jewellers$3,359 NZD

29 data points across 12 retailers

15 retailers$639 NZD to $2,020 NZD

A
Cheapest Retailer
-
$639 NZD
B+
Retailer 2
-
$738 NZD
View
B+
Retailer 3
-
$877 NZD
View
B+
Retailer 4
-
$913 NZD
View
B+
Retailer 5
-
$943 NZD
View
B+
Retailer 6
-
$943 NZD
View
B+
Retailer 7
-
$1,010 NZD
View
B+
Retailer 8
-
$1,010 NZD
View
B+
Retailer 9
-
$1,041 NZD
View
B
Retailer 10
-
$1,082 NZD
View
B
Retailer 11
-
$1,097 NZD
View
B
Retailer 12
-
$1,109 NZD
View
B
Retailer 13
-
$1,185 NZD
View
C
Retailer 14
-
$2,020 NZD
View
Most Expensive
NZ Jewellers
688ba965-f74d-433b-ad69-e509baf7cabe · Nov 5
$3,359 NZD
$1,862 USD
View
Price under review
14 more retailers have this diamond
Prices start from $639 NZDSave up to $1,382 NZD

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
$639 NZD