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Oval|Lab Grown|IGI

0.33ct D SI1 Oval Lab Grown Diamond

ID • D/SI1 • IGI LG816670231

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG816670231

Diamond specifications and retailer prices

From £137 GBP
As of October 30, 2026
Save £154 GBP (53%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £567 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 0.33ct lab-grown oval diamond

This 0.33ct lab-grown oval sits in the sub-half-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG816670231 or 816670231. Listed at 6 retailers as of October 29, 2026, with a 113% 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

0.33
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle38.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816670231
Dimensions5.46 × 3.97 × 2.35 mm
L/W Ratio1.38
Girdle conditionFaceted
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
5.46 mm3.97 mm0.33 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816670231
Side View
Table 59.0%Crown 35.5°Girdle: MED-STKPavilion 38.3°CuletDepth 59.2%

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: Oct 30
Current: £567 GBP|Low: £128 GBP|High: £571 GBP|Avg: £251 GBP|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 30, 2026
Retailer 2£137 GBP
Retailer 4£151 GBP
Retailer 5£166 GBP
Retailer 3£197 GBP
Retailer 6£246 GBP
Retailer 7£291 GBP
MOH London£567 GBP

40 data points across 7 retailers

6 retailers£137 GBP to £291 GBP

A
Cheapest Retailer
-
£137 GBP
B+
Retailer 2
-
£166 GBP
$222 USD
View
B+
Retailer 3
-
£197 GBP
View
B
Retailer 4
-
£246 GBP
$329 USD
View
B
Retailer 5
-
£291 GBP
$390 USD
View
Most Expensive
MOH London
LG816670231 · Oct 29
£567 GBP
View
Price under review
5 more retailers have this diamond
Prices start from £137 GBPSave up to £154 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 Oval
£137 GBP