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Heart|Natural|HRD

1.51ct G SI2 Heart Natural Diamond

ID • G/SI2 • HRD 250000151235

Certificate HRD 250000151235

Diamond specifications and retailer prices

From $4,189 AUD
₹279,571 INR
As of November 2, 2026
Save $4,281 AUD (51%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $8,824 AUD at NZ Jewellers · As of October 18, 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 HRD 250000151235. Listed at 12 retailers as of November 2, 2026, with a 102% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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 LabHRD
CertificateHRD 250000151235
Dimensions6.90 × 7.91 × 4.72 mm
L/W Ratio1.15
Girdle conditionFaceted
Culet sizeNone
Top View
6.90 mm7.91 mm1.51 ctG / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateHRD 250000151235
Side View
Table 61.0%CrownGirdle: MediumPavilionCulet: NoneDepth 59.7%

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 2
Current: $4,189 AUD|Low: $4,189 AUD|High: $9,159 AUD|Avg: $5,445 AUD|-7.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 1$4,189 AUD
Retailer 4$4,675 AUD
Retailer 3$4,835 AUD
Retailer 8$4,871 AUD
Retailer 6$5,073 AUD
Retailer 5$5,272 AUD
Retailer 7$5,378 AUD
Retailer 2$8,470 AUD

39 data points across 8 retailers

12 retailers$4,189 AUD to $8,470 AUD

A
Cheapest Retailer
-
$4,189 AUD
₹279,571 INR
A
Retailer 2
-
$4,675 AUD
$3,276 USD
View
Final sale: no returns
A
Retailer 3
-
$4,835 AUD
SGD 4,579 SGD
View
Retailer 4
-
$5,065 AUD
$3,550 USD
View
Price last confirmed 15 days ago
Retailer 5
-
$5,065 AUD
$3,550 USD
View
Price last confirmed 17 days ago
A
Retailer 6
-
$5,073 AUD
$3,555 USD
View
Retailer 7
-
$5,260 AUD
$3,686 USD
View
Price last confirmed 16 days ago
A
Retailer 8
-
$5,272 AUD
$3,695 USD
View
A
Retailer 9
-
$5,378 AUD
View
Retailer 10
-
$5,845 AUD
$4,096 USD
View
Price last confirmed 14 days ago
B+
Retailer 11
-
$8,470 AUD
£4,674 GBP
View
Most Expensive
NZ Jewellers
e809ac5a-c34f-4214-a89f-e77ae606cb31 · Oct 18
$8,824 AUD
$6,184 USD
View
Price last confirmed 15 days ago
11 more retailers have this diamond
Prices start from $4,189 AUDSave up to $4,281 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
$4,189 AUD