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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 $605 USD
As of November 5, 2026
Save $1,902 USD (76%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $2,507 USD 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 $605 to $2,507, a $1,902 spread on the same certified stone. NZ Jewellers lists it at $2,507. 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
Color
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

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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: $2,507 USD|Low: $605 USD|High: $2,557 USD|Avg: $999 USD|-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$605 USD
Retailer 10$614 USD
Retailer 8$788 USD
Retailer 3$799 USD
Retailer 16$811 USD
Retailer 9$817 USD
Retailer 5$830 USD
Retailer 18$832 USD
Retailer 11$852 USD
Retailer 4$922 USD
Retailer 17$932 USD
Retailer 12$941 USD
Retailer 7$950 USD
Retailer 14$958 USD
Retailer 2$1,055 USD
Retailer 13$1,063 USD
Retailer 6$1,469 USD
NZ Jewellers$2,507 USD

16 data points across 18 retailers

19 retailers$605 USD to $2,507 USD

A
Cheapest Retailer
-
$605 USD
A
Retailer 2
-
$614 USD
View
A
Retailer 3
-
$788 USD
View
A
Retailer 4
-
$799 USD
View
A
Retailer 5
-
$811 USD
View
Retailer 6
-
$817 USD
View
Price last confirmed 8 days ago
A
Retailer 7
-
$830 USD
View
A
Retailer 8
-
$832 USD
View
A
Retailer 9
-
$852 USD
View
Retailer 10
-
$905 USD
View
Price last confirmed 30 days ago
A
Retailer 11
-
$922 USD
View
A
Retailer 12
-
$932 USD
View
A
Retailer 13
-
$941 USD
View
A
Retailer 14
-
$950 USD
View
A
Retailer 15
-
$958 USD
View
A
Retailer 16
-
$1,055 USD
View
B+
Retailer 17
-
$1,063 USD
View
B
Retailer 18
-
$1,469 USD
View
Most Expensive
B
NZ Jewellers
e5fc6c79-4b1a-4ec2-b2f7-f794fd5eedf2 · Nov 5
$2,507 USD
View
18 more retailers have this diamond
Prices start from $605 USDSave up to $1,902 USD

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
$605 USD