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Heart|Natural|GIA

1.51ct K SI2 Heart Natural Diamond

EX • K/SI2 • GIA 1565167954

Certificate GIA 1565167954

Diamond specifications and retailer prices

From $2,500 AUD
As of November 4, 2026
Save $3,752 AUD (60%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $6,252 AUD at NZ Jewellers · As of November 5, 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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1565167954. Listed at 15 retailers as of November 4, 2026, with prices from $2,500 to $6,252, a $3,752 spread on the same certified stone. NZ Jewellers lists it at $6,252. 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
K
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1565167954
Dimensions6.95 × 7.86 × 4.67 mm
L/W Ratio1.13
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Indented Natural
Top View
6.95 mm7.86 mm1.51 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1565167954
Side View
Table 60.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 59.4%

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 4
Current: $6,252 AUD|Low: $2,484 AUD|High: $6,485 AUD|Avg: $3,283 AUD|-3.6%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
November 6, 2026
Retailer 5$2,500 AUD
Retailer 4$2,671 AUD
Retailer 3$2,708 AUD
Retailer 14$2,708 AUD
Retailer 7$2,767 AUD
Retailer 12$2,771 AUD
Retailer 13$2,805 AUD
Retailer 15$2,834 AUD
Retailer 8$2,979 AUD
Retailer 2$3,037 AUD
Retailer 10$3,120 AUD
Retailer 6$3,126 AUD
Retailer 9$3,248 AUD
Retailer 11$5,225 AUD
NZ Jewellers$6,252 AUD

25 data points across 15 retailers

15 retailers$2,500 AUD to $6,252 AUD

A
Cheapest Retailer
-
$2,500 AUD
Final sale: no returns
A
Retailer 2
-
$2,671 AUD
View
A
Retailer 3
-
$2,708 AUD
View
Retailer 4
-
$2,708 AUD
View
Price last confirmed 8 days ago
A
Retailer 5
-
$2,767 AUD
View
A
Retailer 6
-
$2,771 AUD
View
A
Retailer 7
-
$2,805 AUD
View
A
Retailer 8
-
$2,834 AUD
View
A
Retailer 9
-
$2,979 AUD
View
A
Retailer 10
-
$3,037 AUD
View
A
Retailer 11
-
$3,120 AUD
View
A
Retailer 12
-
$3,126 AUD
View
A
Retailer 13
-
$3,248 AUD
View
B+
Retailer 14
-
$5,225 AUD
View
Most Expensive
B+
NZ Jewellers
51c9b586-48e3-43bf-b868-bb551dea9293 · Nov 5
$6,252 AUD
$4,296 USD
View
14 more retailers have this diamond
Prices start from $2,500 AUDSave up to $3,752 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
$2,500 AUD