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Heart|Natural|GIA

0.90ct K SI1 Heart Natural Diamond

EX • K/SI1 • GIA 1549115288

Certificate GIA 1549115288

Diamond specifications and retailer prices

From $1,080 AUD
As of November 4, 2026
Save $253 AUD (19%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $1,333 AUD at Blue Nile · As of November 5, 2026
View at Blue Nile

About this 0.9ct natural heart diamond

This 0.9ct natural heart sits in the just-under-one-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 1549115288. Listed at 6 retailers as of November 4, 2026, with prices from $1,080 to $1,333, a $253 spread on the same certified stone. Blue Nile lists it at $1,333. 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

0.90
Carat
K
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1549115288
Dimensions5.55 × 6.71 × 4.10 mm
L/W Ratio1.21
Culet sizeNone
Key to symbols
Cloud, Crystal, Feather
Top View
5.55 mm6.71 mm0.90 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1549115288
Side View
Table 57.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 61.1%

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 4
Current: $1,333 AUD|Low: $947 AUD|High: $1,498 AUD|Avg: $1,211 AUD|-11.0%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 4$1,080 AUD
Retailer 6$1,081 AUD
Retailer 3$1,177 AUD
Retailer 5$1,205 AUD
Retailer 2$1,253 AUD
Blue Nile$1,333 AUD

41 data points across 6 retailers

6 retailers$1,080 AUD to $1,333 AUD

A
Cheapest Retailer
-
$1,080 AUD
Final sale: no returns
A
Retailer 2
-
$1,081 AUD
View
A
Retailer 3
-
$1,177 AUD
View
A
Retailer 4
-
$1,205 AUD
View
A
Retailer 5
-
$1,253 AUD
View
Most Expensive
A
Blue Nile
27439294 · Nov 5
$1,333 AUD
$916 USD
View
5 more retailers have this diamond
Prices start from $1,080 AUDSave up to $253 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
0.90ct Heart
$1,080 AUD