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Heart|Natural|GIA

1.51ct D SI2 Heart Natural Diamond

EX • D/SI2 • GIA 1523914114

Certificate GIA 1523914114

Diamond specifications and retailer prices

From $5,925 AUD
$4,162 USD
As of October 31, 2026
Save $5,450 AUD (48%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $11,375 AUD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.51ct natural heart diamond

This 1.51ct natural heart sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1523914114. Listed at 7 retailers as of October 30, 2026, with prices from $5,925 to $11,375, a $5,450 spread on the same certified stone. NZ Jewellers lists it at $11,375. 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

1.51
Carat
D
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.8°
Pavilion angle41.46°
OriginNatural
Grading LabGIA
CertificateGIA 1523914114
Dimensions6.60 × 7.84 × 4.93 mm
L/W Ratio1.19
Top View
6.60 mm7.84 mm1.51 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1523914114
Side View
Table 59.0%Crown 38.8°Girdle: THK-VTKPavilion 41.46°Culet: NoneDepth 62.9%

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: Oct 31
Current: $11,375 AUD|Low: $5,902 AUD|High: $11,514 AUD|Avg: $7,739 AUD|-1.2%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 7$5,925 AUD
Retailer 2$6,152 AUD
Retailer 4$6,529 AUD
Retailer 5$6,529 AUD
Retailer 6$6,722 AUD
Retailer 8$6,949 AUD
Retailer 9$7,878 AUD
Retailer 3$10,399 AUD
NZ Jewellers$11,375 AUD

32 data points across 9 retailers

7 retailers$5,925 AUD to $11,375 AUD

A
Cheapest Retailer
-
$5,925 AUD
$4,162 USD
A
Retailer 2
-
$6,152 AUD
£3,403 GBP
View
A
Retailer 3
-
$6,529 AUD
$4,586 USD
View
A
Retailer 4
-
$6,529 AUD
$4,586 USD
View
A
Retailer 5
-
$6,722 AUD
$4,722 USD
View
B+
Retailer 6
-
$10,399 AUD
£5,752 GBP
View
Most Expensive
B
NZ Jewellers
1b4e9668-4573-4f2e-aab0-e7affd92e4c1 · Oct 30
$11,375 AUD
$7,990 USD
View
6 more retailers have this diamond
Prices start from $5,925 AUDSave up to $5,450 AUD

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
1.51ct Heart
$5,925 AUD