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Heart|Natural|GIA

0.90ct G SI1 Heart Natural Diamond

VG • G/SI1 • GIA 1525871778

Certificate GIA 1525871778

Diamond specifications and retailer prices

From $1,388 AUD
HK$7,600 HKD
As of November 1, 2026
Save $2,222 AUD (62%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $4,990 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 1525871778. Listed at 20 retailers as of November 1, 2026, with a 160% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

0.90
Carat
G
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 1525871778
Dimensions6.61 × 5.66 × 3.37 mm
L/W Ratio1.17
Girdle conditionFaceted
Top View
6.61 mm5.66 mm0.90 ctG / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1525871778
Side View
Table 56.0%CrownGirdle: MED-VTKPavilion 40.6°Culet: NoneDepth 59.6%

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: $2,491 AUD|Low: $1,388 AUD|High: $3,824 AUD|Avg: $2,194 AUD|-9.2%
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
Retailer 17
Retailer 18
November 2, 2026
Retailer 14$1,388 AUD
Retailer 18$1,408 AUD
Retailer 2$1,521 AUD
Retailer 13$1,555 AUD
Retailer 12$1,632 AUD
Retailer 5$1,689 AUD
Retailer 17$1,716 AUD
Retailer 11$1,845 AUD
Retailer 7$1,865 AUD
Retailer 4$1,866 AUD
Retailer 8$1,898 AUD
Retailer 9$2,290 AUD
Retailer 1$2,491 AUD
Retailer 10$2,614 AUD
Retailer 3$2,788 AUD
Retailer 6$2,929 AUD
Retailer 16$3,331 AUD
Retailer 15$3,610 AUD

25 data points across 18 retailers

20 retailers$1,388 AUD to $3,610 AUD

A
Cheapest Retailer
-
$1,388 AUD
HK$7,600 HKD
A
Retailer 2
-
$1,408 AUD
$987 USD
View
A
Retailer 3
-
$1,521 AUD
$1,066 USD
View
Final sale: no returns
A
Retailer 4
-
$1,555 AUD
$1,090 USD
View
A
Retailer 5
-
$1,632 AUD
$1,144 USD
View
A
Retailer 6
-
$1,689 AUD
$1,184 USD
View
A
Retailer 7
-
$1,716 AUD
€1,145 EUR
View
A
Retailer 8
-
$1,845 AUD
£1,018 GBP
View
A
Retailer 9
-
$1,865 AUD
$1,307 USD
View
A
Retailer 10
-
$1,866 AUD
$1,308 USD
View
B+
Retailer 11
-
$1,898 AUD
$1,330 USD
View
B+
Retailer 12
-
$2,290 AUD
SGD 2,169 SGD
View
Retailer 13
-
$2,467 AUD
£1,361 GBP
View
Price last confirmed 36 days ago
B+
Retailer 14
-
$2,491 AUD
$1,746 USD
View
Retailer 15
-
$2,614 AUD
View
Price last confirmed 27 days ago
B+
Retailer 16
-
$2,788 AUD
ZAR 31,565 ZAR
View
Retailer 17
-
$2,929 AUD
$2,053 USD
View
Price last confirmed 10 days ago
B
Retailer 18
-
$3,331 AUD
£1,838 GBP
View
B
Retailer 19
-
$3,610 AUD
$2,530 USD
View
Most Expensive
NZ Jewellers
d1a6aed0-4dc5-471f-8e35-b1c107c46df8 · Sep 25
$4,990 AUD
$3,497 USD
View
Price last confirmed 38 days ago
19 more retailers have this diamond
Prices start from $1,388 AUDSave up to $2,222 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
$1,388 AUD