CaratHunter
Plans
Heart|Natural|GIA

0.90ct K SI1 Heart Natural Diamond

EX • K/SI1 • GIA 6542397714

Certificate GIA 6542397714

Diamond specifications and retailer prices

From $875 AUD
As of November 6, 2026
Save $1,307 AUD (60%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $4,213 AUD at NZ Jewellers · As of September 25, 2026
View at NZ Jewellers

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 6542397714. Listed at 13 retailers as of November 2, 2026, with a 149% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
SymmetryVery Good
FluorescenceNone
Pavilion angle38.9°
OriginNatural
Grading LabGIA
CertificateGIA 6542397714
Dimensions5.71 × 6.75 × 4.03 mm
L/W Ratio1.18
Top View
5.71 mm6.75 mm0.90 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6542397714
Side View
Table 58.0%CrownGirdle: MED-VTKPavilion 38.9°Culet: NoneDepth 59.7%

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: $1,225 AUD|Low: $875 AUD|High: $2,461 AUD|Avg: $1,492 AUD|-13.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 11$875 AUD
Retailer 9$1,100 AUD
Retailer 2$1,179 AUD
Retailer 1$1,225 AUD
Retailer 10$1,230 AUD
Retailer 3$1,259 AUD
Retailer 5$1,259 AUD
Retailer 4$1,528 AUD
Retailer 6$1,554 AUD
Retailer 7$1,745 AUD
Retailer 8$1,819 AUD
Retailer 12$2,182 AUD

37 data points across 12 retailers

13 retailers$875 AUD to $2,182 AUD

A
Cheapest Retailer
-
$875 AUD
A
Retailer 2
-
$1,100 AUD
View
Final sale: no returns
A
Retailer 3
-
$1,179 AUD
View
A
Retailer 4
-
$1,225 AUD
View
A
Retailer 5
-
$1,230 AUD
View
A
Retailer 6
-
$1,259 AUD
View
A
Retailer 7
-
$1,259 AUD
View
B+
Retailer 8
-
$1,528 AUD
View
B+
Retailer 9
-
$1,554 AUD
View
B+
Retailer 10
-
$1,745 AUD
View
B+
Retailer 11
-
$1,819 AUD
View
B+
Retailer 12
-
$2,182 AUD
View
Most Expensive
NZ Jewellers
96717b14-6037-4173-b8d9-9846d49afc09 · Sep 25
$4,213 AUD
$2,895 USD
View
Price last confirmed 42 days ago
12 more retailers have this diamond
Prices start from $875 AUDSave up to $1,307 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
$875 AUD