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Round|Lab Grown|IGI

0.90ct E SI1 Round Lab Grown Diamond

EX • E/SI1 • IGI LG497178855

Shape and cutting style on the report: Round brilliant

Certificate IGI LG497178855

Diamond specifications and retailer prices

From £137 GBP
$182 USD
As of October 28, 2026
Save £521 GBP (79%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £658 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 0.9ct lab-grown round diamond

This 0.9ct lab-grown round sits in the just-under-one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG497178855 or 497178855. Listed at 8 retailers as of October 28, 2026, with prices from £137 to £658, a £521 spread on the same certified stone. MOH London lists it at £658. 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

0.90
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.2°
Pavilion angle41.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG497178855
Dimensions6.15 × 6.10 × 3.83 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
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
6.15 mm6.10 mm0.90 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG497178855
Side View
Table 60.0%Crown 35.2°Girdle: ThickPavilion 41.4°Culet: NoneDepth 62.5%

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 28
Current: £658 GBP|Low: £99 GBP|High: £716 GBP|Avg: £330 GBP|-8.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 29, 2026
Retailer 8£137 GBP
Retailer 3£217 GBP
Retailer 2£243 GBP
Retailer 6£257 GBP
Retailer 9£286 GBP
Retailer 4£297 GBP
Retailer 5£376 GBP
Retailer 7£492 GBP
MOH London£658 GBP

38 data points across 9 retailers

8 retailers£137 GBP to £658 GBP

A
Cheapest Retailer
-
£137 GBP
$182 USD
Final sale: no returns
A
Retailer 2
-
£217 GBP
$289 USD
View
A
Retailer 3
-
£243 GBP
View
A
Retailer 4
-
£257 GBP
$342 USD
View
B+
Retailer 5
-
£297 GBP
$395 USD
View
B+
Retailer 6
-
£376 GBP
$501 USD
View
B
Retailer 7
-
£492 GBP
$655 USD
View
Most Expensive
B
MOH London
LG497178855 · Oct 29
£658 GBP
View
7 more retailers have this diamond
Prices start from £137 GBPSave up to £521 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
0.90ct Round
£137 GBP