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Heart|Natural|GIA

1.51ct K SI2 Heart Natural Diamond

VG • K/SI2 • GIA 7488034686

Certificate GIA 7488034686

Diamond specifications and retailer prices

From $2,866 AUD
As of November 5, 2026
Save $3,730 AUD (57%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $8,130 AUD at NZ Jewellers · As of September 28, 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 K colour (faint-tinted) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 7488034686. Listed at 15 retailers as of November 2, 2026, with a 130% 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
K
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36.6°
Pavilion angle38.2°
OriginNatural
Grading LabGIA
CertificateGIA 7488034686
Dimensions8.02 × 7.02 × 4.01 mm
L/W Ratio1.14
Key to symbols
Feather, Twinning Wisp
Top View
8.02 mm7.02 mm1.51 ctK / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 7488034686
Side View
Table 59.0%Crown 36.6°Girdle: MED-THKPavilion 38.2°Culet: NoneDepth 57.1%

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 5
Current: $7,872 AUD|Low: $2,850 AUD|High: $8,130 AUD|Avg: $4,362 AUD|-3.2%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 5$2,866 AUD
Retailer 2$3,107 AUD
Retailer 9$3,372 AUD
Retailer 8$3,765 AUD
Retailer 10$3,765 AUD
Retailer 7$3,940 AUD
Retailer 3$3,970 AUD
Retailer 4$3,985 AUD
Retailer 11$4,344 AUD
Retailer 6$6,596 AUD
NZ Jewellers$7,872 AUD

44 data points across 11 retailers

15 retailers$2,866 AUD to $6,596 AUD

A
Cheapest Retailer
-
$2,866 AUD
A
Retailer 2
-
$3,107 AUD
View
B+
Retailer 3
-
$3,372 AUD
View
Retailer 4
-
$3,765 AUD
View
Price last confirmed 11 days ago
Retailer 5
-
$3,765 AUD
View
Price last confirmed 12 days ago
Retailer 6
-
$3,889 AUD
View
Price last confirmed 39 days ago
Retailer 7
-
$3,940 AUD
View
Price last confirmed 12 days ago
B+
Retailer 8
-
$3,970 AUD
View
A
Retailer 9
-
$3,985 AUD
View
Retailer 10
-
$4,344 AUD
View
Price last confirmed 10 days ago
Retailer 11
-
$4,487 AUD
View
Price last confirmed 61 days ago
Retailer 12
-
$4,487 AUD
View
Price last confirmed 38 days ago
B
Retailer 13
-
$6,596 AUD
View
Retailer 14
-
$7,872 AUD
View
Price last confirmed 10 days ago
Most Expensive
NZ Jewellers
2818403f-ff57-435c-ae52-52e63dfee60a · Sep 28
$8,130 AUD
$5,586 USD
View
Price last confirmed 39 days ago
14 more retailers have this diamond
Prices start from $2,866 AUDSave up to $3,730 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
$2,866 AUD