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Heart|Natural|GIA

0.90ct D SI1 Heart Natural Diamond

EX • D/SI1 • GIA 7543281578

Certificate GIA 7543281578

Diamond specifications and retailer prices

From $1,840 AUD
HK$10,100 HKD
As of November 1, 2026
Save $2,340 AUD (56%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $6,184 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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 7543281578. Listed at 18 retailers as of November 1, 2026, with a 127% 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
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Pavilion angle39.9°
OriginNatural
Grading LabGIA
CertificateGIA 7543281578
Dimensions6.01 × 6.67 × 3.87 mm
L/W Ratio1.11
Girdle conditionFaceted
Top View
6.01 mm6.67 mm0.90 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 7543281578
Side View
Table 57.0%CrownGirdle: THN-VTKPavilion 39.9°Culet: NoneDepth 58.0%

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 1
Current: $3,259 AUD|Low: $1,804 AUD|High: $4,377 AUD|Avg: $2,789 AUD|-2.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
November 2, 2026
Retailer 11$1,840 AUD
Retailer 14$2,195 AUD
Retailer 16$2,202 AUD
Retailer 10$2,248 AUD
Retailer 3$2,292 AUD
Retailer 4$2,293 AUD
Retailer 9$2,398 AUD
Retailer 15$2,449 AUD
Retailer 6$2,603 AUD
Retailer 7$2,896 AUD
Retailer 12$3,029 AUD
Retailer 8$3,221 AUD
Retailer 1$3,259 AUD
Retailer 2$3,592 AUD
Retailer 5$3,738 AUD
Retailer 13$4,180 AUD

26 data points across 16 retailers

18 retailers$1,840 AUD to $4,180 AUD

A
Cheapest Retailer
-
$1,840 AUD
HK$10,100 HKD
A
Retailer 2
-
$2,195 AUD
€1,468 EUR
View
B+
Retailer 3
-
$2,202 AUD
$1,547 USD
View
Final sale: no returns
B+
Retailer 4
-
$2,248 AUD
$1,579 USD
View
B+
Retailer 5
-
$2,292 AUD
$1,610 USD
View
B+
Retailer 6
-
$2,293 AUD
$1,611 USD
View
B+
Retailer 7
-
$2,398 AUD
£1,326 GBP
View
B+
Retailer 8
-
$2,449 AUD
$1,720 USD
View
Retailer 9
-
$2,603 AUD
SGD 2,471 SGD
View
Price last confirmed 10 days ago
B+
Retailer 10
-
$2,896 AUD
SGD 2,749 SGD
View
B+
Retailer 11
-
$3,029 AUD
$2,128 USD
View
B+
Retailer 12
-
$3,089 AUD
View
Retailer 13
-
$3,221 AUD
View
Price last confirmed 27 days ago
B+
Retailer 14
-
$3,259 AUD
€2,180 EUR
View
B
Retailer 15
-
$3,592 AUD
ZAR 40,760 ZAR
View
Retailer 16
-
$3,738 AUD
$2,625 USD
View
Price last confirmed 9 days ago
B
Retailer 17
-
$4,180 AUD
£2,312 GBP
View
Most Expensive
NZ Jewellers
94b336de-3472-454b-94dc-00cd6d92205b · Sep 25
$6,184 AUD
$4,344 USD
View
Price last confirmed 37 days ago
17 more retailers have this diamond
Prices start from $1,840 AUDSave up to $2,340 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
$1,840 AUD