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Round|Natural|GIA

0.81ct K SI2 Round Natural Diamond

EX • K/SI2 • GIA 6445924041

Certificate GIA 6445924041

Diamond specifications and retailer prices

From HK$4,919 HKD
As of November 6, 2026
Save HK$13,266 HKD (73%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: HK$18,436 HKD at NZ Jewellers · As of September 19, 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 6445924041. Listed at 18 retailers as of November 5, 2026, with a 270% 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
K
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6445924041
Dimensions6.03 × 5.99 × 3.65 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Top View
6.03 mm5.99 mm0.81 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6445924041
Side View
Table 58.0%Crown 33°Girdle: MED-NULPavilion 40.8°Culet: NoneDepth 60.8%

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 6
Current: HK$18,185 HKD|Low: HK$5,798 HKD|High: HK$18,350 HKD|Avg: HK$7,757 HKD|-0.9%
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
November 6, 2026
Retailer 3HK$5,798 HKD
Retailer 12HK$5,798 HKD
Retailer 6HK$5,923 HKD
Retailer 2HK$6,017 HKD
Retailer 13HK$6,025 HKD
Retailer 11HK$6,166 HKD
Retailer 5HK$6,692 HKD
Retailer 4HK$6,755 HKD
Retailer 14HK$6,833 HKD
Retailer 7HK$6,857 HKD
Retailer 8HK$7,021 HKD
Retailer 9HK$8,159 HKD
Retailer 10HK$10,607 HKD
NZ JewellersHK$18,185 HKD

35 data points across 14 retailers

18 retailersHK$4,919 HKD to HK$18,185 HKD

A
Cheapest Retailer
-
HK$4,919 HKD
A
Retailer 2
-
HK$5,798 HKD
View
Retailer 3
-
HK$5,798 HKD
View
Price last confirmed 8 days ago
A
Retailer 4
-
HK$5,923 HKD
View
A
Retailer 5
-
HK$6,017 HKD
View
A
Retailer 6
-
HK$6,025 HKD
View
Retailer 7
-
HK$6,041 HKD
View
Price last confirmed 117 days ago
A
Retailer 8
-
HK$6,166 HKD
View
A
Retailer 9
-
HK$6,692 HKD
View
A
Retailer 10
-
HK$6,755 HKD
View
Retailer 11
-
HK$6,786 HKD
View
Price last confirmed 46 days ago
A
Retailer 12
-
HK$6,833 HKD
View
A
Retailer 13
-
HK$6,857 HKD
View
A
Retailer 14
-
HK$7,021 HKD
View
A
Retailer 15
-
HK$8,159 HKD
View
B+
Retailer 16
-
HK$10,607 HKD
View
B
Retailer 17
-
HK$18,185 HKD
View
Most Expensive
NZ Jewellers
80f18276-4425-4ebe-b270-2f6649426dad · Sep 19
HK$18,436 HKD
$2,350 USD
View
Price last confirmed 47 days ago
17 more retailers have this diamond
Prices start from HK$4,919 HKDSave up to HK$13,266 HKD

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
HK$4,919 HKD