Round|Natural|IGI

0.73ct K SI1 Round Natural Diamond

EX • K/SI1 • IGI 720529326

Shape and cutting style on the report: Round brilliant

Certificate IGI 720529326

Diamond specifications and retailer prices

From £264 GBP
As of November 6, 2026
Save £555 GBP (68%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £1,359 GBP at NZ Jewellers · As of September 28, 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 720529326. Listed at 16 retailers as of November 2, 2026, with a 210% 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

0.73
Carat
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.7°
Pavilion angle40.6°
OriginNatural
Grading LabIGI
CertificateIGI 720529326
Dimensions5.78 × 5.80 × 3.53 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 720529326
Side View
Table 58.0%Crown 34.7°Girdle: MediumPavilion 40.6°Culet: NoneDepth 60.9%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: £264 GBP|Low: £264 GBP|High: £822 GBP|Avg: £479 GBP|-5.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 1£264 GBP
Retailer 2£444 GBP
Retailer 4£448 GBP
Retailer 5£452 GBP
Retailer 7£505 GBP
Retailer 3£529 GBP
Retailer 6£532 GBP
Retailer 8£819 GBP

28 data points across 8 retailers

16 retailers£264 GBP to £819 GBP

A
Cheapest Retailer
-
£264 GBP
Retailer 2
-
£340 GBP
View
Price last confirmed 95 days ago
Retailer 3
-
£354 GBP
View
Price last confirmed 28 days ago
Retailer 4
-
£382 GBP
View
Price last confirmed 29 days ago
Retailer 5
-
£382 GBP
View
Price last confirmed 38 days ago
Retailer 6
-
£409 GBP
View
Price last confirmed 28 days ago
A
Retailer 7
-
£444 GBP
View
B+
Retailer 8
-
£448 GBP
View
B+
Retailer 9
-
£452 GBP
View
A
Retailer 10
-
£452 GBP
View
B+
Retailer 11
-
£472 GBP
View
B+
Retailer 12
-
£505 GBP
View
A
Retailer 13
-
£529 GBP
View
A
Retailer 14
-
£532 GBP
View
B+
Retailer 15
-
£819 GBP
View
Most Expensive
NZ Jewellers
554644e3-9f58-43d1-8906-a2b239d18d17 · Sep 28
£1,359 GBP
$1,829 USD
View
Price last confirmed 39 days ago
15 more retailers have this diamond
Prices start from £264 GBPSave up to £555 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
£264 GBP