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Heart|Natural|GIA

0.51ct E SI1 Heart Natural Diamond

ID • E/SI1 • GIA 1518624145

Certificate GIA 1518624145

Diamond specifications and retailer prices

From $1,025 NZD
As of November 6, 2026
Save $2,453 NZD (71%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $3,478 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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1518624145. Listed at 15 retailers as of November 5, 2026, with prices from $1,025 to $3,478, a $2,453 spread on the same certified stone. NZ Jewellers lists it at $3,478. 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
E
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 1518624145
Dimensions4.64 × 5.47 × 3.24 mm
L/W Ratio1.18
Girdle conditionFaceted
Key to symbols
Twinning Wisp, Crystal
Top View
4.64 mm5.47 mm0.51 ctE / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 1518624145
Side View
Table 59.0%CrownGirdle: STK-EXTPavilionCulet: NoneDepth 59.2%

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: $3,478 NZD|Low: $1,025 NZD|High: $3,478 NZD|Avg: $1,613 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
Retailer 13
November 6, 2026
Retailer 13$1,025 NZD
Retailer 3$1,109 NZD
Retailer 10$1,194 NZD
Retailer 12$1,194 NZD
Retailer 4$1,281 NZD
Retailer 6$1,349 NZD
Retailer 2$1,353 NZD
Retailer 9$1,389 NZD
Retailer 11$1,452 NZD
Retailer 5$1,667 NZD
Retailer 7$1,712 NZD
Retailer 8$2,558 NZD
NZ Jewellers$3,478 NZD

38 data points across 13 retailers

15 retailers$1,025 NZD to $3,478 NZD

A
Cheapest Retailer
-
$1,025 NZD
Final sale: no returns
A
Retailer 2
-
$1,050 NZD
View
A
Retailer 3
-
$1,109 NZD
View
B+
Retailer 4
-
$1,194 NZD
View
Retailer 5
-
$1,194 NZD
View
Price last confirmed 8 days ago
B+
Retailer 6
-
$1,281 NZD
View
B+
Retailer 7
-
$1,349 NZD
View
B+
Retailer 8
-
$1,353 NZD
View
B+
Retailer 9
-
$1,389 NZD
View
B+
Retailer 10
-
$1,452 NZD
View
B
Retailer 11
-
$1,532 NZD
View
Retailer 12
-
$1,667 NZD
View
Price last confirmed 33 days ago
B+
Retailer 13
-
$1,712 NZD
View
B
Retailer 14
-
$2,558 NZD
View
Most Expensive
B
NZ Jewellers
1f9c128c-3fb7-4bd0-affb-343042fe8807 · Nov 5
$3,478 NZD
$1,928 USD
View
14 more retailers have this diamond
Prices start from $1,025 NZDSave up to $2,453 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
$1,025 NZD