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Heart|Natural|GIA

1.51ct F SI1 Heart Natural Diamond

EX • F/SI1 • GIA 5241106036

Certificate GIA 5241106036

Diamond specifications and retailer prices

From $6,538 AUD
$4,582 USD
As of November 1, 2026
Save $2,474 AUD (27%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $11,945 AUD at Wholesale Diamonds Direct · As of October 27, 2026
View at Wholesale Diamonds Direct

About this 1.51ct natural heart diamond

This 1.51ct natural heart sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5241106036. Listed at 10 retailers as of November 1, 2026, with a 38% 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
F
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36.96°
Pavilion angle37.64°
OriginNatural
Grading LabGIA
CertificateGIA 5241106036
Dimensions6.72 × 7.91 × 4.73 mm
L/W Ratio1.18
Culet sizeNone
Top View
6.72 mm7.91 mm1.51 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 5241106036
Side View
Table 59.0%Crown 36.96°Girdle: VTN-THKPavilion 37.64°Culet: NoneDepth 59.8%

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 1
Current: $7,341 AUD|Low: $6,538 AUD|High: $11,945 AUD|Avg: $7,883 AUD|+1.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Wholesale Diamonds Direct
November 3, 2026
Retailer 6$6,538 AUD
Retailer 5$6,581 AUD
Retailer 3$6,727 AUD
Retailer 8$6,881 AUD
Retailer 7$7,093 AUD
Retailer 1$7,341 AUD
Retailer 4$8,139 AUD
Retailer 2$9,012 AUD
Wholesale Diamonds Direct$11,945 AUD

12 data points across 9 retailers

10 retailers$6,538 AUD to $9,012 AUD

A
Cheapest Retailer
-
$6,538 AUD
$4,582 USD
A
Retailer 2
-
$6,581 AUD
$4,612 USD
View
A
Retailer 3
-
$6,617 AUD
SGD 6,267 SGD
View
A
Retailer 4
-
$6,727 AUD
$4,714 USD
View
A
Retailer 5
-
$6,881 AUD
$4,822 USD
View
A
Retailer 6
-
$7,093 AUD
SGD 6,717 SGD
View
A
Retailer 7
-
$7,341 AUD
£4,051 GBP
View
B+
Retailer 8
-
$8,139 AUD
$5,704 USD
View
B+
Retailer 9
-
$9,012 AUD
$6,316 USD
View
Most Expensive
Wholesale Diamonds Direct
600306056 · Oct 27
$11,945 AUD
$8,371 USD
View
Price last confirmed 7 days ago
9 more retailers have this diamond
Prices start from $6,538 AUDSave up to $2,474 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
$6,538 AUD