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Heart|Natural|GIA

1.50ct K IF Heart Natural Diamond

GD • K/IF • GIA 6551949238

Certificate GIA 6551949238

Diamond specifications and retailer prices

From $5,381 AUD
As of November 6, 2026
Save $1,655 AUD (24%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $7,035 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 IF clarity (flawless or internally-flawless), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6551949238. Listed at 6 retailers as of November 5, 2026, with prices from $5,381 to $7,035, a $1,655 spread on the same certified stone. Blue Nile lists it at $7,035. 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

1.50
Carat
K
Colour
IF
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6551949238
Dimensions7.12 × 7.94 × 4.34 mm
L/W Ratio1.12
Culet sizeNone
Top View
7.12 mm7.94 mm1.50 ctK / IF
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6551949238
Side View
Table 62.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 54.7%

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: $7,035 AUD|Low: $5,381 AUD|High: $7,441 AUD|Avg: $6,345 AUD|-5.5%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 6, 2026
Retailer 2$5,381 AUD
Retailer 4$5,894 AUD
Retailer 3$6,231 AUD
Retailer 5$6,315 AUD
Blue Nile$7,035 AUD

46 data points across 5 retailers

6 retailers$5,381 AUD to $7,035 AUD

A
Cheapest Retailer
-
$5,381 AUD
A
Retailer 2
-
$5,894 AUD
View
B+
Retailer 3
-
$6,231 AUD
View
B+
Retailer 4
-
$6,315 AUD
View
B+
Retailer 5
-
$6,903 AUD
View
Most Expensive
B+
Blue Nile
29887846 · Nov 5
$7,035 AUD
$4,834 USD
View
5 more retailers have this diamond
Prices start from $5,381 AUDSave up to $1,655 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
$5,381 AUD