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0.81ct M SI1 Round Natural Diamond

EX • M/SI1 • GIA 2516420056

Shape and cutting style on the report: Round brilliant

Certificate GIA 2516420056

Diamond specifications and retailer prices

From $1,371 AUD
As of November 5, 2026
Save $294 AUD (18%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $3,653 AUD at NZ Jewellers · As of September 28, 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 M colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2516420056. Listed at 8 retailers as of November 5, 2026, with a relatively tight 21% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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
M
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2516420056
Dimensions5.91 × 5.94 × 3.73 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Top View
5.91 mm5.94 mm0.81 ctM / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2516420056
Side View
Table 56.0%Crown 36.5°Girdle: THN-STKPavilion 40.8°Culet: NoneDepth 63.0%

Caratlytics Score

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

Price History

Last verified: Nov 5
Current: $1,583 AUD|Low: $1,169 AUD|High: $1,726 AUD|Avg: $1,472 AUD|-1.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
November 5, 2026
Retailer 4$1,169 AUD
Retailer 3$1,371 AUD
Retailer 1$1,583 AUD
Retailer 2$1,666 AUD

21 data points across 4 retailers

8 retailers$1,371 AUD to $1,666 AUD

Retailer 1
-
$1,166 AUD
Price last confirmed 29 days ago
Retailer 2
-
$1,166 AUD
View
Price last confirmed 29 days ago
Retailer 3
-
$1,210 AUD
View
Price last confirmed 38 days ago
Retailer 4
-
$1,344 AUD
View
Price last confirmed 38 days ago
B+
Retailer 5
-
$1,371 AUD
View
B+
Retailer 6
-
$1,583 AUD
View
B+
Retailer 7
-
$1,666 AUD
View
Most Expensive
NZ Jewellers
c526bb4f-9ce2-4252-8731-b304b4210963 · Sep 28
$3,653 AUD
$2,557 USD
View
Price last confirmed 39 days ago
7 more retailers have this diamond
Prices start from $1,371 AUDSave up to $294 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+
0.81ct Round
$1,371 AUD