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Heart|Natural|GIA

0.51ct I SI1 Heart Natural Diamond

ID • I/SI1 • GIA 7546408346

Certificate GIA 7546408346

Diamond specifications and retailer prices

From $1,072 NZD
As of November 5, 2026
13 retailers carry this diamond
Most expensive: $3,442 NZD 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 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 7546408346. Listed at 13 retailers as of November 5, 2026. 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
I
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Pavilion angle40.7°
OriginNatural
Grading LabGIA
CertificateGIA 7546408346
Dimensions4.80 × 5.46 × 3.26 mm
L/W Ratio1.14
Girdle conditionFaceted
Top View
4.80 mm5.46 mm0.51 ctI / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 7546408346
Side View
Table 58.0%CrownGirdle: MED-VTKPavilion 40.7°Culet: NoneDepth 59.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $1,072 NZD|Low: $586 NZD|High: $2,098 NZD|Avg: $1,142 NZD|+0.3%
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
November 5, 2026
Retailer 9$714 NZD
Retailer 11$772 NZD
Retailer 4$794 NZD
Retailer 3$889 NZD
Retailer 14$904 NZD
Retailer 7$990 NZD
Retailer 6$996 NZD
Retailer 1$1,072 NZD
Retailer 2$1,187 NZD
Retailer 12$1,209 NZD
Retailer 10$1,246 NZD
Retailer 8$1,279 NZD
Retailer 5$1,391 NZD
Retailer 13$1,946 NZD

29 data points across 14 retailers

13 retailers

Retailer 1
-
$714 NZD
Price last confirmed 16 days ago
Retailer 2
-
$794 NZD
View
Price last confirmed 17 days ago
Retailer 3
-
$889 NZD
View
Price last confirmed 17 days ago
Retailer 4
-
$904 NZD
View
Price last confirmed 20 days ago
Retailer 5
-
$990 NZD
View
Price last confirmed 16 days ago
B+
Retailer 6
-
$1,072 NZD
View
Retailer 7
-
$1,187 NZD
View
Price last confirmed 17 days ago
Retailer 8
-
$1,209 NZD
View
Price last confirmed 15 days ago
Retailer 9
-
$1,246 NZD
View
Price last confirmed 17 days ago
Retailer 10
-
$1,279 NZD
View
Price last confirmed 17 days ago
Retailer 11
-
$1,391 NZD
View
Price last confirmed 35 days ago
Retailer 12
-
$1,946 NZD
View
Price last confirmed 17 days ago
Most Expensive
NZ Jewellers
2f3c9433-d4bb-4ac0-919d-097aacbe32e3 · Sep 25
$3,442 NZD
$1,908 USD
View
Price under review
12 more retailers have this diamond
Prices start from $1,072 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.

B+
0.51ct Heart
$1,072 NZD