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Radiant|Natural|IGI

0.81ct I SI1 Radiant Natural Diamond

VG • I/SI1 • IGI 345835444

Shape and cutting style on the report: Cut cornered square modified brilliant

Certificate IGI 345835444

Diamond specifications and retailer prices

From £1,094 GBP
€1,396 EUR
As of October 29, 2026
Save £16 GBP (1%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £1,110 GBP at 77 Diamonds · As of November 2, 2026
View at 77 Diamonds

About this 0.81ct natural radiant diamond

This 0.81ct natural radiant sits in the just-under-one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 345835444. Listed at 2 retailers as of October 29, 2026, with a relatively tight 1% spread, which is unusual at this carat range and suggests competitive pricing across the listings. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.81
Carat
I
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabIGI
CertificateIGI 345835444
Dimensions5.18 × 4.94 × 3.48 mm
L/W Ratio1.05
Culet sizePointed
Top View
5.18 mm4.94 mm0.81 ctI / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI 345835444
Side View
Table 77.0%CrownGirdle: THN-MEDPavilionCulet: NoneDepth 70.4%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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Price History

Last verified: Oct 29
Current: £1,110 GBP|Low: £1,060 GBP|High: £1,112 GBP|Avg: £1,094 GBP|+2.2%
77 Diamonds
Retailer 2
November 2, 2026
Retailer 2£1,094 GBP
77 Diamonds£1,110 GBP

36 data points across 2 retailers

2 retailers£1,094 GBP to £1,110 GBP

B+
Cheapest Retailer
-
£1,094 GBP
€1,396 EUR
Most Expensive
B
77 Diamonds
RADZDDTKDJXW · Nov 2
£1,110 GBP
View
1 more retailer has this diamond
Prices start from £1,094 GBPSave up to £16 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.

B+
0.81ct Radiant
£1,094 GBP