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Heart|Natural|GIA

1.50ct K SI1 Heart Natural Diamond

EX • K/SI1 • GIA 7556184946

Certificate GIA 7556184946

Diamond specifications and retailer prices

From $3,759 AUD
As of November 6, 2026
Save $722 AUD (16%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $4,481 AUD at Blue Nile · As of November 5, 2026
View at Blue Nile

About this 1.5ct natural heart diamond

This 1.5ct natural heart sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 7556184946. Listed at 6 retailers as of November 5, 2026, with prices from $3,759 to $4,481, a $722 spread on the same certified stone. Blue Nile lists it at $4,481. 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

1.50
Carat
K
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7556184946
Dimensions7.26 × 7.93 × 4.70 mm
L/W Ratio1.09
Culet sizeNone
Key to symbols
Twinning Wisp, Cloud
Top View
7.26 mm7.93 mm1.50 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7556184946
Side View
Table 58.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 59.2%

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: $4,481 AUD|Low: $3,759 AUD|High: $5,305 AUD|Avg: $4,292 AUD|-15.5%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 4$3,759 AUD
Retailer 6$3,855 AUD
Retailer 2$3,866 AUD
Retailer 3$4,036 AUD
Retailer 5$4,357 AUD
Blue Nile$4,481 AUD

45 data points across 6 retailers

6 retailers$3,759 AUD to $4,481 AUD

A
Cheapest Retailer
-
$3,759 AUD
A
Retailer 2
-
$3,855 AUD
View
A
Retailer 3
-
$3,866 AUD
View
A
Retailer 4
-
$4,036 AUD
View
A
Retailer 5
-
$4,357 AUD
View
Most Expensive
A
Blue Nile
29040818 · Nov 5
$4,481 AUD
$3,079 USD
View
5 more retailers have this diamond
Prices start from $3,759 AUDSave up to $722 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
1.50ct Heart
$3,759 AUD