CaratHunter
Plans
Round|Natural|IGI

0.81ct K SI2 Round Natural Diamond

EX • K/SI2 • IGI 651459938

Shape and cutting style on the report: Round brilliant

Certificate IGI 651459938

Diamond specifications and retailer prices

From £507 GBP
As of November 6, 2026
Save £778 GBP (61%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £1,285 GBP 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 IGI 651459938. Listed at 5 retailers as of November 5, 2026, with prices from £507 to £1,285, a £778 spread on the same certified stone. NZ Jewellers lists it at £1,285. 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 angle36.1°
Pavilion angle40.7°
OriginNatural
Grading LabIGI
CertificateIGI 651459938
Dimensions5.94 × 5.95 × 3.71 mm
L/W Ratio1.00
Culet sizePointed
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
5.94 mm5.95 mm0.81 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 651459938
Side View
Table 57.0%Crown 36.1°Girdle: MediumPavilion 40.7°Culet: NoneDepth 62.3%

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: Nov 6
Current: £1,285 GBP|Low: £495 GBP|High: £1,297 GBP|Avg: £704 GBP|-0.9%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 5, 2026
Retailer 5£507 GBP
Retailer 2£509 GBP
Retailer 3£607 GBP
Retailer 6£648 GBP
Retailer 4£952 GBP
NZ Jewellers£1,285 GBP

24 data points across 6 retailers

5 retailers£507 GBP to £1,285 GBP

A
Cheapest Retailer
-
£507 GBP
A
Retailer 2
-
£509 GBP
View
A
Retailer 3
-
£607 GBP
View
Retailer 4
-
£952 GBP
View
Price last confirmed 8 days ago
Most Expensive
B
NZ Jewellers
b2cb64f7-1b48-472c-979f-e062d6fb1685 · Nov 5
£1,285 GBP
$1,730 USD
View
4 more retailers have this diamond
Prices start from £507 GBPSave up to £778 GBP

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
£507 GBP