Round|Natural|GIA

0.81ct I SI2 Round Natural Diamond

EX • I/SI2 • GIA 6521265345

Certificate GIA 6521265345

Diamond specifications and retailer prices

From $1,472 AUD
$1,034 USD
As of October 31, 2026
Save $1,771 AUD (55%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $4,513 AUD at NZ Jewellers · As of September 26, 2026
View at NZ Jewellers

About this 0.81ct natural round diamond

This 0.81ct natural round sits in the just-under-one-carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6521265345. Listed at 18 retailers as of October 29, 2026, with a 120% 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

0.81
Carat
I
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6521265345
Dimensions5.99 × 5.94 × 3.70 mm
L/W Ratio1.01
Star length50%
Top View
5.99 mm5.94 mm0.81 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6521265345
Side View
Table 57.0%Crown 35.5°GirdlePavilion 40.8°Culet: NoneDepth 62.0%

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: Oct 31
Current: $2,000 AUD|Low: $1,418 AUD|High: $3,430 AUD|Avg: $2,194 AUD|-0.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 8$1,472 AUD
Retailer 2$1,529 AUD
Retailer 9$1,566 AUD
Retailer 4$1,728 AUD
Retailer 7$1,742 AUD
Retailer 1$2,000 AUD
Retailer 10$2,170 AUD
Retailer 5$2,345 AUD
Retailer 3$2,462 AUD
Retailer 6$3,244 AUD

39 data points across 10 retailers

18 retailers$1,472 AUD to $3,244 AUD

A
Cheapest Retailer
-
$1,472 AUD
$1,034 USD
Final sale: no returns
A
Retailer 2
-
$1,529 AUD
$1,074 USD
View
A
Retailer 3
-
$1,566 AUD
$1,100 USD
View
Retailer 4
-
$1,677 AUD
$1,178 USD
View
Price last confirmed 44 days ago
Retailer 5
-
$1,677 AUD
$1,178 USD
View
Price last confirmed 23 days ago
Retailer 6
-
$1,677 AUD
$1,178 USD
View
Price last confirmed 24 days ago
A
Retailer 7
-
$1,728 AUD
$1,214 USD
View
Retailer 8
-
$1,741 AUD
$1,223 USD
View
Price last confirmed 32 days ago
A
Retailer 9
-
$1,742 AUD
$1,224 USD
View
Retailer 10
-
$1,935 AUD
$1,359 USD
View
Price last confirmed 23 days ago
Retailer 11
-
$1,935 AUD
$1,359 USD
View
Price last confirmed 40 days ago
B+
Retailer 12
-
$2,000 AUD
£1,106 GBP
View
B+
Retailer 13
-
$2,170 AUD
£1,200 GBP
View
B+
Retailer 14
-
$2,345 AUD
£1,297 GBP
View
B+
Retailer 15
-
$2,462 AUD
€1,647 EUR
View
B
Retailer 16
-
$3,244 AUD
£1,794 GBP
View
Retailer 17
-
$4,513 AUD
$3,170 USD
View
Price last confirmed 42 days ago
Most Expensive
NZ Jewellers
0267b566-3f76-496c-9319-e5606abfe050 · Sep 26
$4,513 AUD
$3,170 USD
View
Price last confirmed 35 days ago
17 more retailers have this diamond
Prices start from $1,472 AUDSave up to $1,771 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
0.81ct Round
$1,472 AUD