CaratHunter
Plans
Round|Natural|IGI

0.81ct K SI2 Round Natural Diamond

EX • K/SI2 • IGI 630424737

Shape and cutting style on the report: Round brilliant

Certificate IGI 630424737

Diamond specifications and retailer prices

From £447 GBP
As of November 5, 2026
Save £955 GBP (68%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £1,403 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 630424737. Listed at 11 retailers as of November 5, 2026, with prices from £447 to £1,403, a £955 spread on the same certified stone. NZ Jewellers lists it at £1,403. 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 angle36.3°
Pavilion angle41.4°
OriginNatural
Grading LabIGI
CertificateIGI 630424737
Dimensions5.90 × 5.92 × 3.74 mm
L/W Ratio1.00
Girdle conditionFaceted
Top View
5.90 mm5.92 mm0.81 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 630424737
Side View
Table 58.0%Crown 36.3°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 63.3%

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 5
Current: £1,403 GBP|Low: £447 GBP|High: £1,403 GBP|Avg: £676 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 5, 2026
Retailer 7£447 GBP
Retailer 5£481 GBP
Retailer 10£488 GBP
Retailer 8£516 GBP
Retailer 9£545 GBP
Retailer 6£577 GBP
Retailer 3£592 GBP
Retailer 2£655 GBP
Retailer 4£1,031 GBP
NZ Jewellers£1,403 GBP

38 data points across 10 retailers

11 retailers£447 GBP to £1,403 GBP

A
Cheapest Retailer
-
£447 GBP
Retailer 2
-
£481 GBP
View
Price last confirmed 8 days ago
Retailer 3
-
£516 GBP
View
Price last confirmed 60 days ago
A
Retailer 4
-
£516 GBP
View
B+
Retailer 5
-
£545 GBP
View
B+
Retailer 6
-
£577 GBP
View
A
Retailer 7
-
£592 GBP
View
A
Retailer 8
-
£655 GBP
View
B
Retailer 9
-
£1,031 GBP
View
Retailer 10
-
£1,403 GBP
View
Price last confirmed 66 days ago
Most Expensive
B
NZ Jewellers
aa7f5bd2-b465-44ac-9b85-4991bb5bb6e6 · Nov 5
£1,403 GBP
$1,888 USD
View
10 more retailers have this diamond
Prices start from £447 GBPSave up to £955 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
£447 GBP