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Heart|Natural|GIA

1.51ct G SI2 Heart Natural Diamond

VG • G/SI2 • GIA 6541179721

Certificate GIA 6541179721

Diamond specifications and retailer prices

From $4,496 AUD
$3,151 USD
As of October 30, 2026
Save $5,661 AUD (56%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $11,064 AUD at NZ Jewellers · As of September 25, 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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 6541179721. Listed at 13 retailers as of October 30, 2026, with a 126% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
G
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle40.7°
OriginNatural
Grading LabGIA
CertificateGIA 6541179721
Dimensions7.81 × 6.60 × 4.97 mm
L/W Ratio1.18
Top View
7.81 mm6.60 mm1.51 ctG / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6541179721
Side View
Table 58.0%CrownGirdle: STK-VTKPavilion 40.7°Culet: NoneDepth 63.7%

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: Oct 30
Current: $10,157 AUD|Low: $4,456 AUD|High: $10,353 AUD|Avg: $6,262 AUD|-1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 8$4,496 AUD
Retailer 5$4,566 AUD
Retailer 2$4,810 AUD
Retailer 9$4,835 AUD
Retailer 6$5,078 AUD
Retailer 4$5,551 AUD
Retailer 7$5,796 AUD
Retailer 10$5,966 AUD
Retailer 3$6,639 AUD
Retailer 11$9,357 AUD
Retailer 1$10,157 AUD

36 data points across 11 retailers

13 retailers$4,496 AUD to $10,157 AUD

A
Cheapest Retailer
-
$4,496 AUD
$3,151 USD
A
Retailer 2
-
$4,566 AUD
HK$25,000 HKD
View
A
Retailer 3
-
$4,810 AUD
$3,371 USD
View
A
Retailer 4
-
$4,835 AUD
$3,389 USD
View
A
Retailer 5
-
$5,078 AUD
$3,559 USD
View
Final sale: no returns
A
Retailer 6
-
$5,360 AUD
View
A
Retailer 7
-
$5,551 AUD
$3,890 USD
View
A
Retailer 8
-
$5,796 AUD
£3,198 GBP
View
A
Retailer 9
-
$5,966 AUD
SGD 5,650 SGD
View
B+
Retailer 10
-
$6,639 AUD
View
Retailer 11
-
$9,357 AUD
$6,558 USD
View
Price last confirmed 9 days ago
B+
Retailer 12
-
$10,157 AUD
£5,605 GBP
View
Most Expensive
NZ Jewellers
a3838425-575f-43a2-919a-eba1d071daa9 · Sep 25
$11,064 AUD
$7,754 USD
View
Price last confirmed 38 days ago
12 more retailers have this diamond
Prices start from $4,496 AUDSave up to $5,661 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
$4,496 AUD