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Heart|Natural|GIA

1.51ct G SI2 Heart Natural Diamond

ID • G/SI2 • GIA 2558589233

Certificate GIA 2558589233

Diamond specifications and retailer prices

From $4,760 AUD
$3,336 USD
As of October 30, 2026
Save $6,628 AUD (58%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $11,388 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 G colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2558589233. Listed at 15 retailers as of October 30, 2026, with prices from $4,760 to $11,388, a $6,628 spread on the same certified stone. NZ Jewellers lists it at $11,388. 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
G
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2558589233
Dimensions7.86 × 6.72 × 4.82 mm
L/W Ratio1.17
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather, Cavity, Needle
Top View
7.86 mm6.72 mm1.51 ctG / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2558589233
Side View
Table 63.0%CrownGirdle: STK-VTKPavilionCulet: NDepth 61.3%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $11,388 AUD|Low: $4,512 AUD|High: $11,388 AUD|Avg: $6,793 AUD|+1.0%
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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 2, 2026
Retailer 9$4,760 AUD
Retailer 7$5,001 AUD
Retailer 6$5,414 AUD
Retailer 14$5,922 AUD
Retailer 15$5,922 AUD
Retailer 16$5,922 AUD
Retailer 8$5,993 AUD
Retailer 17$6,285 AUD
Retailer 2$6,332 AUD
Retailer 3$6,678 AUD
Retailer 4$6,678 AUD
Retailer 13$6,833 AUD
Retailer 5$6,892 AUD
Retailer 10$7,261 AUD
Retailer 18$7,393 AUD
Retailer 11$7,395 AUD
Retailer 12$10,411 AUD
NZ Jewellers$11,388 AUD

30 data points across 18 retailers

15 retailers$4,760 AUD to $11,388 AUD

A
Cheapest Retailer
-
$4,760 AUD
$3,336 USD
A
Retailer 2
-
$5,001 AUD
$3,505 USD
View
A
Retailer 3
-
$5,922 AUD
$4,150 USD
View
A
Retailer 4
-
$5,922 AUD
$4,150 USD
View
A
Retailer 5
-
$5,993 AUD
$4,200 USD
View
A
Retailer 6
-
$6,285 AUD
$4,405 USD
View
A
Retailer 7
-
$6,332 AUD
£3,494 GBP
View
A
Retailer 8
-
$6,654 AUD
$4,663 USD
View
A
Retailer 9
-
$6,678 AUD
$4,680 USD
View
A
Retailer 10
-
$6,678 AUD
$4,680 USD
View
B+
Retailer 11
-
$6,833 AUD
$4,789 USD
View
B+
Retailer 12
-
$6,892 AUD
$4,830 USD
View
B+
Retailer 13
-
$7,395 AUD
€4,936 EUR
View
B+
Retailer 14
-
$10,411 AUD
£5,745 GBP
View
Most Expensive
B
NZ Jewellers
0de007c3-c249-4d1f-b0b4-5b34d64af8d8 · Oct 30
$11,388 AUD
$7,981 USD
View
14 more retailers have this diamond
Prices start from $4,760 AUDSave up to $6,628 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
$4,760 AUD