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Round|Natural|GIA

0.81ct K SI2 Round Natural Diamond

EX • K/SI2 • GIA 3425192437

Certificate GIA 3425192437

Diamond specifications and retailer prices

From $864 AUD
As of November 5, 2026
Save $2,717 AUD (76%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $3,581 AUD at NZ Jewellers · As of November 5, 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 K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 3425192437. Listed at 19 retailers as of November 5, 2026, with prices from $864 to $3,581, a $2,717 spread on the same certified stone. NZ Jewellers lists it at $3,581. 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
K
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 3425192437
Dimensions6.01 × 5.99 × 3.68 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Top View
6.01 mm5.99 mm0.81 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 3425192437
Side View
Table 59.0%Crown 33.5°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 61.3%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $3,581 AUD|Low: $864 AUD|High: $3,653 AUD|Avg: $1,427 AUD|-2.0%
NZ Jewellers
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 6, 2026
Retailer 15$864 AUD
Retailer 10$877 AUD
Retailer 8$1,126 AUD
Retailer 3$1,141 AUD
Retailer 16$1,159 AUD
Retailer 9$1,167 AUD
Retailer 5$1,186 AUD
Retailer 18$1,189 AUD
Retailer 11$1,217 AUD
Retailer 4$1,317 AUD
Retailer 17$1,331 AUD
Retailer 12$1,344 AUD
Retailer 7$1,357 AUD
Retailer 14$1,369 AUD
Retailer 2$1,507 AUD
Retailer 13$1,518 AUD
Retailer 6$2,098 AUD
NZ Jewellers$3,581 AUD

16 data points across 18 retailers

19 retailers$864 AUD to $3,581 AUD

A
Cheapest Retailer
-
$864 AUD
A
Retailer 2
-
$877 AUD
View
A
Retailer 3
-
$1,126 AUD
View
A
Retailer 4
-
$1,141 AUD
View
A
Retailer 5
-
$1,159 AUD
View
Retailer 6
-
$1,167 AUD
View
Price last confirmed 8 days ago
A
Retailer 7
-
$1,186 AUD
View
A
Retailer 8
-
$1,189 AUD
View
A
Retailer 9
-
$1,217 AUD
View
Retailer 10
-
$1,293 AUD
View
Price last confirmed 30 days ago
A
Retailer 11
-
$1,317 AUD
View
A
Retailer 12
-
$1,331 AUD
View
A
Retailer 13
-
$1,344 AUD
View
A
Retailer 14
-
$1,357 AUD
View
A
Retailer 15
-
$1,369 AUD
View
A
Retailer 16
-
$1,507 AUD
View
B+
Retailer 17
-
$1,518 AUD
View
B
Retailer 18
-
$2,098 AUD
View
Most Expensive
B
NZ Jewellers
e5fc6c79-4b1a-4ec2-b2f7-f794fd5eedf2 · Nov 5
$3,581 AUD
$2,507 USD
View
18 more retailers have this diamond
Prices start from $864 AUDSave up to $2,717 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
$864 AUD