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Heart|Natural|GIA

1.51ct K VS1 Heart Natural Diamond

EX • K/VS1 • GIA 3565431298

Certificate GIA 3565431298

Diamond specifications and retailer prices

From $5,381 AUD
As of November 6, 2026
Save $1,019 AUD (16%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $6,399 AUD at Blue Nile · As of November 5, 2026
View at Blue Nile

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 VS1 clarity (very-slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 3565431298. Listed at 4 retailers as of November 5, 2026, with prices from $5,381 to $6,399, a $1,019 spread on the same certified stone. Blue Nile lists it at $6,399. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
K
Colour
VS1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 3565431298
Dimensions6.80 × 8.04 × 4.60 mm
L/W Ratio1.18
Culet sizeNone
Key to symbols
Crystal, Pinpoint, Natural
Top View
6.80 mm8.04 mm1.51 ctK / VS1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 3565431298
Side View
Table 59.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 57.2%

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 6
Current: $6,399 AUD|Low: $5,381 AUD|High: $6,580 AUD|Avg: $5,963 AUD|-2.7%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
November 6, 2026
Retailer 3$5,381 AUD
Retailer 4$5,711 AUD
Retailer 2$5,737 AUD
Blue Nile$6,399 AUD

36 data points across 4 retailers

4 retailers$5,381 AUD to $6,399 AUD

A
Cheapest Retailer
-
$5,381 AUD
A
Retailer 2
-
$5,711 AUD
View
A
Retailer 3
-
$5,737 AUD
View
Most Expensive
B+
Blue Nile
30289174 · Nov 5
$6,399 AUD
$4,397 USD
View
3 more retailers have this diamond
Prices start from $5,381 AUDSave up to $1,019 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
$5,381 AUD