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Round|Natural|IGI

0.73ct K SI1 Round Natural Diamond

EX • K/SI1 • IGI 375918372

Shape and cutting style on the report: Round brilliant

Certificate IGI 375918372

Diamond specifications and retailer prices

From £415 GBP
As of November 5, 2026
Save £886 GBP (68%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £1,302 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 0.73ct natural round diamond

This 0.73ct natural round sits in the half to three-quarter carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI 375918372. Listed at 11 retailers as of November 5, 2026, with prices from £415 to £1,302, a £886 spread on the same certified stone. NZ Jewellers lists it at £1,302. 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

0.73
Carat
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.6°
Pavilion angle40.8°
OriginNatural
Grading LabIGI
CertificateIGI 375918372
Dimensions5.78 × 5.80 × 3.55 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
5.78 mm5.80 mm0.73 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 375918372
Side View
Table 58.5%Crown 34.6°Girdle: MediumPavilion 40.8°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: £1,302 GBP|Low: £415 GBP|High: £1,302 GBP|Avg: £627 GBP
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
November 6, 2026
Retailer 10£415 GBP
Retailer 13£447 GBP
Retailer 4£461 GBP
Retailer 9£472 GBP
Retailer 3£479 GBP
Retailer 2£513 GBP
Retailer 5£513 GBP
Retailer 12£530 GBP
Retailer 7£614 GBP
Retailer 6£620 GBP
Retailer 11£897 GBP
Retailer 8£958 GBP
NZ Jewellers£1,302 GBP

39 data points across 13 retailers

11 retailers£415 GBP to £1,302 GBP

A
Cheapest Retailer
-
£415 GBP
A
Retailer 2
-
£447 GBP
View
A
Retailer 3
-
£472 GBP
View
A
Retailer 4
-
£479 GBP
View
B+
Retailer 5
-
£513 GBP
View
B+
Retailer 6
-
£513 GBP
View
B+
Retailer 7
-
£614 GBP
View
B+
Retailer 8
-
£620 GBP
View
B
Retailer 9
-
£897 GBP
View
B
Retailer 10
-
£958 GBP
View
Most Expensive
C
NZ Jewellers
4cda1e88-0392-4f9c-8a20-ddf4e8106789 · Nov 5
£1,302 GBP
$1,752 USD
View
10 more retailers have this diamond
Prices start from £415 GBPSave up to £886 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
0.73ct Round
£415 GBP