Round|Natural|IGI

0.33ct I SI1 Round Natural Diamond

EX • I/SI1 • IGI 813685227

Certificate IGI 813685227

Diamond specifications and retailer prices

From £115 GBP
₹14,625 INR
As of November 1, 2026
Save £623 GBP (84%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £737 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 0.33ct natural round diamond

This 0.33ct natural round sits in the sub-half-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI 813685227. Listed at 13 retailers as of October 30, 2026, with prices from £115 to £737, a £623 spread on the same certified stone. NZ Jewellers lists it at £737. 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

0.33
Carat
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabIGI
CertificateIGI 813685227
Dimensions4.44 × 4.45 × 2.72 mm
L/W Ratio1.00
Top View
4.44 mm4.45 mm0.33 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 813685227
Side View
Table 57.0%CrownGirdle: MediumPavilionCulet: NoneDepth 61.1%

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 1
Current: £737 GBP|Low: £115 GBP|High: £737 GBP|Avg: £285 GBP|+1.1%
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 2, 2026
Retailer 9£115 GBP
Retailer 3£163 GBP
Retailer 13£175 GBP
Retailer 5£181 GBP
Retailer 2£217 GBP
Retailer 11£252 GBP
Retailer 7£255 GBP
Retailer 12£260 GBP
Retailer 8£289 GBP
Retailer 4£318 GBP
Retailer 6£330 GBP
Retailer 10£376 GBP
NZ Jewellers£737 GBP

10 data points across 13 retailers

13 retailers£115 GBP to £737 GBP

A
Cheapest Retailer
-
£115 GBP
₹14,625 INR
A
Retailer 2
-
£163 GBP
$218 USD
View
A
Retailer 3
-
£175 GBP
$235 USD
View
A
Retailer 4
-
£181 GBP
$243 USD
View
A
Retailer 5
-
£217 GBP
$291 USD
View
A
Retailer 6
-
£252 GBP
ZAR 5,464 ZAR
View
A
Retailer 7
-
£255 GBP
View
A
Retailer 8
-
£260 GBP
$348 USD
View
A
Retailer 9
-
£289 GBP
€369 EUR
View
B+
Retailer 10
-
£318 GBP
$426 USD
View
B+
Retailer 11
-
£330 GBP
View
B
Retailer 12
-
£376 GBP
View
Most Expensive
B
NZ Jewellers
cb221f03-510e-4ca5-8cd8-18856017a7cb · Oct 30
£737 GBP
$988 USD
View
12 more retailers have this diamond
Prices start from £115 GBPSave up to £623 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
0.33ct Round
£115 GBP