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Oval|Lab Grown|IGI

1.58ct E SI1 Oval Lab Grown Diamond

ID • E/SI1 • IGI LG818680998

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG818680998

Diamond specifications and retailer prices

From £211 GBP
HK$2,200 HKD
As of October 29, 2026
Save £567 GBP (73%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £778 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.58ct lab-grown oval diamond

This 1.58ct lab-grown oval sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG818680998 or 818680998. Listed at 6 retailers as of October 29, 2026, with prices from £211 to £778, a £567 spread on the same certified stone. MOH London lists it at £778. 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

1.58
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.1°
Pavilion angle39.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818680998
Dimensions9.44 × 6.53 × 3.97 mm
L/W Ratio1.45
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.44 mm6.53 mm1.58 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818680998
Side View
Table 61.0%Crown 34.1°Girdle: Slightly ThickPavilion 39.9°Culet: NoneDepth 60.8%

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 29
Current: £778 GBP|Low: £211 GBP|High: £784 GBP|Avg: £380 GBP|+0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 30, 2026
Retailer 7£211 GBP
Retailer 4£263 GBP
Retailer 3£337 GBP
Retailer 2£356 GBP
Retailer 6£370 GBP
Retailer 5£387 GBP
MOH London£778 GBP

42 data points across 7 retailers

6 retailers£211 GBP to £778 GBP

A
Cheapest Retailer
-
£211 GBP
HK$2,200 HKD
B+
Retailer 2
-
£263 GBP
$350 USD
View
A
Retailer 3
-
£356 GBP
View
A
Retailer 4
-
£370 GBP
$493 USD
View
A
Retailer 5
-
£387 GBP
$516 USD
View
Most Expensive
B
MOH London
LG818680998 · Oct 29
£778 GBP
View
5 more retailers have this diamond
Prices start from £211 GBPSave up to £567 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
1.58ct Oval
£211 GBP