Heart|Natural|GIA

1.53ct G SI1 Heart Natural Diamond

EX • G/SI1 • GIA 7512805115

Certificate GIA 7512805115

Diamond specifications and retailer prices

From $5,734 AUD
As of November 6, 2026
Save $4,277 AUD (43%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $11,108 AUD at NZ Jewellers · As of September 20, 2026
View at NZ Jewellers

About this 1.53ct natural heart diamond

This 1.53ct natural heart sits in the one-and-a-half to two carat band, graded G 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 7512805115. Listed at 10 retailers as of November 2, 2026, with a 75% 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

1.53
Carat
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36.62°
Pavilion angle41.66°
OriginNatural
Grading LabGIA
CertificateGIA 7512805115
Dimensions7.30 × 8.04 × 4.73 mm
L/W Ratio1.10
Girdle conditionVery Thick
Key to symbols
Twinning Wisp, Crystal, Feather, Cloud, Needle
Top View
7.30 mm8.04 mm1.53 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 7512805115
Side View
Table 61.0%Crown 36.62°GirdlePavilion 41.66°CuletDepth 58.9%

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: Nov 6
Current: $5,734 AUD|Low: $5,685 AUD|High: $10,277 AUD|Avg: $7,112 AUD|+0.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 6, 2026
Retailer 1$5,734 AUD
Retailer 4$5,922 AUD
Retailer 2$6,156 AUD
Retailer 5$6,800 AUD
Retailer 3$10,012 AUD

43 data points across 5 retailers

10 retailers$5,734 AUD to $10,012 AUD

A
Cheapest Retailer
-
$5,734 AUD
A
Retailer 2
-
$5,922 AUD
View
A
Retailer 3
-
$6,156 AUD
View
Retailer 4
-
$6,376 AUD
View
Price last confirmed 37 days ago
Retailer 5
-
$6,376 AUD
View
Price last confirmed 45 days ago
Retailer 6
-
$6,376 AUD
View
Price last confirmed 31 days ago
Retailer 7
-
$6,800 AUD
View
Price last confirmed 29 days ago
B
Retailer 8
-
$10,012 AUD
View
Retailer 9
-
$11,108 AUD
View
Price last confirmed 32 days ago
Most Expensive
NZ Jewellers
6bacbd7f-5f23-4a2f-aee8-8f46be2902d1 · Sep 20
$11,108 AUD
$7,632 USD
View
Price last confirmed 47 days ago
9 more retailers have this diamond
Prices start from $5,734 AUDSave up to $4,277 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
1.53ct Heart
$5,734 AUD