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Heart|Natural|GIA

1.51ct F SI2 Heart Natural Diamond

ID • F/SI2 • GIA 6237686959

Certificate GIA 6237686959

Diamond specifications and retailer prices

From $6,009 AUD
As of November 6, 2026
Save $5,520 AUD (48%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $11,530 AUD at NZ Jewellers · As of November 3, 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 F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6237686959. Listed at 7 retailers as of November 3, 2026, with prices from $6,009 to $11,530, a $5,520 spread on the same certified stone. NZ Jewellers lists it at $11,530. 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
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.06°
Pavilion angle42.2°
OriginNatural
Grading LabGIA
CertificateGIA 6237686959
Dimensions6.73 × 8.01 × 4.86 mm
L/W Ratio1.19
Top View
6.73 mm8.01 mm1.51 ctF / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6237686959
Side View
Table 62.0%Crown 35.06°Girdle: MED-THKPavilion 42.2°Culet: NoneDepth 60.6%

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 6
Current: $11,530 AUD|Low: $6,009 AUD|High: $11,733 AUD|Avg: $8,004 AUD|-1.7%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 4$6,009 AUD
Retailer 2$6,235 AUD
Retailer 5$6,618 AUD
Retailer 6$6,618 AUD
Retailer 7$6,817 AUD
Retailer 8$7,345 AUD
Retailer 10$7,567 AUD
Retailer 9$9,224 AUD
Retailer 3$10,540 AUD
NZ Jewellers$11,530 AUD

30 data points across 10 retailers

7 retailers$6,009 AUD to $11,530 AUD

A
Cheapest Retailer
-
$6,009 AUD
A
Retailer 2
-
$6,235 AUD
View
A
Retailer 3
-
$6,618 AUD
View
A
Retailer 4
-
$6,618 AUD
View
A
Retailer 5
-
$6,817 AUD
View
B+
Retailer 6
-
$10,540 AUD
View
Most Expensive
B
NZ Jewellers
32984088-0f29-4678-9a41-d7fb0f52f55f · Nov 3
$11,530 AUD
$7,922 USD
View
6 more retailers have this diamond
Prices start from $6,009 AUDSave up to $5,520 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
$6,009 AUD