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Oval|Lab Grown|IGI

1.29ct E SI1 Oval Lab Grown Diamond

ID • E/SI1 • IGI LG855610313

Certificate IGI LG855610313

Diamond specifications and retailer prices

From £230 GBP
As of November 6, 2026
Save £112 GBP (33%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £342 GBP at Adiamor · As of November 6, 2026
View at Adiamor

About this 1.29ct lab-grown oval diamond

This 1.29ct lab-grown oval sits in the one-and-a-quarter to one-and-a-half carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG855610313 or 855610313. Listed at 3 retailers as of November 6, 2026, with prices from £230 to £342, a £112 spread on the same certified stone. Adiamor lists it at £342. 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

1.29
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
CertificateIGI LG855610313
Dimensions9.35 × 5.76 × 3.68 mm
L/W Ratio1.62
Top View
9.35 mm5.76 mm1.29 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG855610313
Side View
Table 60.0%CrownGirdlePavilionCulet: NoneDepth 63.9%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 6
Current: £342 GBP|Low: £230 GBP|High: £342 GBP|Avg: £287 GBP
Adiamor
Retailer 2
Retailer 3
November 6, 2026
Retailer 3£230 GBP
Retailer 2£290 GBP
Adiamor£342 GBP

1 data point across 3 retailers

3 retailers£230 GBP to £342 GBP

B+
Cheapest Retailer
-
£230 GBP
B+
Retailer 2
-
£290 GBP
View
Most Expensive
B+
Adiamor
D-83017166 · Nov 6
£342 GBP
$458 USD
View
2 more retailers have this diamond
Prices start from £230 GBPSave up to £112 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+
1.29ct Oval
£230 GBP