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Heart|Natural|GIA

0.90ct J SI1 Heart Natural Diamond

EX • J/SI1 • GIA 1543173708

Certificate GIA 1543173708

Diamond specifications and retailer prices

From $948 AUD
HK$5,200 HKD
As of November 1, 2026
Save $1,394 AUD (60%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $4,380 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1543173708. Listed at 14 retailers as of November 1, 2026, with a 147% 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
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Pavilion angle40.2°
OriginNatural
Grading LabGIA
CertificateGIA 1543173708
Dimensions5.59 × 6.58 × 4.15 mm
L/W Ratio1.18
Girdle conditionFaceted
Top View
5.59 mm6.58 mm0.90 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1543173708
Side View
Table 55.0%CrownGirdle: STK-VTKPavilion 40.2°Culet: NoneDepth 63.0%

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: $1,317 AUD|Low: $948 AUD|High: $2,566 AUD|Avg: $1,618 AUD|-14.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 2, 2026
Retailer 7$948 AUD
Retailer 10$1,179 AUD
Retailer 6$1,315 AUD
Retailer 1$1,317 AUD
Retailer 9$1,324 AUD
Retailer 12$1,338 AUD
Retailer 3$1,347 AUD
Retailer 4$1,599 AUD
Retailer 2$1,607 AUD
Retailer 11$1,920 AUD
Retailer 5$1,923 AUD
Retailer 13$2,015 AUD
Retailer 8$2,341 AUD

34 data points across 13 retailers

14 retailers$948 AUD to $2,341 AUD

A
Cheapest Retailer
-
$948 AUD
HK$5,200 HKD
B+
Retailer 2
-
$1,179 AUD
$828 USD
View
Final sale: no returns
A
Retailer 3
-
$1,315 AUD
$924 USD
View
A
Retailer 4
-
$1,317 AUD
£729 GBP
View
A
Retailer 5
-
$1,324 AUD
$930 USD
View
A
Retailer 6
-
$1,338 AUD
$940 USD
View
Retailer 7
-
$1,347 AUD
SGD 1,279 SGD
View
Price last confirmed 10 days ago
B+
Retailer 8
-
$1,599 AUD
SGD 1,518 SGD
View
B+
Retailer 9
-
$1,607 AUD
$1,129 USD
View
B+
Retailer 10
-
$1,920 AUD
ZAR 21,789 ZAR
View
Retailer 11
-
$1,923 AUD
View
Price last confirmed 28 days ago
Retailer 12
-
$2,015 AUD
$1,416 USD
View
Price last confirmed 9 days ago
B+
Retailer 13
-
$2,341 AUD
£1,295 GBP
View
Most Expensive
NZ Jewellers
49809009-c699-407d-b902-f73808d4e2c6 · Sep 25
$4,380 AUD
$3,077 USD
View
Price last confirmed 37 days ago
13 more retailers have this diamond
Prices start from $948 AUDSave up to $1,394 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
$948 AUD