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Round|Natural|GIA

0.80ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 7518428781

Certificate GIA 7518428781

Diamond specifications and retailer prices

From $1,587 AUD
$1,115 USD
As of October 25, 2026
Save $1,803 AUD (53%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $4,509 AUD at NZ Jewellers · As of October 3, 2026
View at NZ Jewellers

About this 0.8ct natural round diamond

This 0.8ct natural round sits in the just-under-one-carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 7518428781. Listed at 21 retailers as of October 25, 2026, with a 114% 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

0.80
Carat
J
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 7518428781
Dimensions5.89 × 5.85 × 3.71 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Culet sizeNone
Top View
5.89 mm5.85 mm0.80 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 7518428781
Side View
Table 56.0%Crown 36.5°Girdle: THN-STKPavilion 40.8°Culet: NoneDepth 63.2%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 25
Current: $1,822 AUD|Low: $1,288 AUD|High: $3,426 AUD|Avg: $2,029 AUD|+5.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 31, 2026
Retailer 8$1,546 AUD
Retailer 7$1,587 AUD
Retailer 2$1,604 AUD
Retailer 9$1,607 AUD
Retailer 6$1,674 AUD
Retailer 10$1,755 AUD
Retailer 1$1,822 AUD
Retailer 3$2,461 AUD
Retailer 4$2,581 AUD
Retailer 5$3,390 AUD

38 data points across 10 retailers

21 retailers$1,587 AUD to $3,390 AUD

B+
Cheapest Retailer
-
$1,587 AUD
$1,115 USD
B+
Retailer 2
-
$1,604 AUD
$1,127 USD
View
B+
Retailer 3
-
$1,607 AUD
$1,129 USD
View
B+
Retailer 4
-
$1,644 AUD
$1,155 USD
View
B+
Retailer 5
-
$1,674 AUD
$1,176 USD
View
Retailer 6
-
$1,674 AUD
$1,176 USD
View
Price last confirmed 32 days ago
Retailer 7
-
$1,674 AUD
$1,176 USD
View
Price last confirmed 22 days ago
Retailer 8
-
$1,674 AUD
$1,176 USD
View
Price last confirmed 19 days ago
B+
Retailer 9
-
$1,755 AUD
$1,233 USD
View
B+
Retailer 10
-
$1,804 AUD
$1,267 USD
View
B+
Retailer 11
-
$1,822 AUD
£1,008 GBP
View
Retailer 12
-
$1,932 AUD
$1,357 USD
View
Price last confirmed 33 days ago
B
Retailer 13
-
$1,932 AUD
$1,357 USD
View
B
Retailer 14
-
$1,936 AUD
$1,360 USD
View
B
Retailer 15
-
$1,936 AUD
$1,360 USD
View
B
Retailer 16
-
$2,007 AUD
$1,410 USD
View
B
Retailer 17
-
$2,461 AUD
£1,361 GBP
View
B
Retailer 18
-
$2,581 AUD
€1,727 EUR
View
B
Retailer 19
-
$3,390 AUD
£1,875 GBP
View
Retailer 20
-
$4,509 AUD
$3,167 USD
View
Price last confirmed 34 days ago
Most Expensive
NZ Jewellers
01280d2d-e210-49bc-b0cf-4261d6adf45c · Oct 3
$4,509 AUD
$3,167 USD
View
Price last confirmed 28 days ago
20 more retailers have this diamond
Prices start from $1,587 AUDSave up to $1,803 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.

B+
0.80ct Round
$1,587 AUD