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Round|Lab Grown|IGI

0.66ct E SI2 Round Lab Grown Diamond

VG • E/SI2 • IGI LG447090585

Shape and cutting style on the report: Round brilliant

Certificate IGI LG447090585

Diamond specifications and retailer prices

From £186 GBP
As of November 1, 2026
Save £651 GBP (78%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £837 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 0.66ct lab-grown round diamond

This 0.66ct lab-grown round sits in the half to three-quarter carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI LG447090585 or 447090585. Listed at 3 retailers as of November 1, 2026, with prices from £186 to £837, a £651 spread on the same certified stone. MOH London lists it at £837. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.66
Carat
E
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryGood
FluorescenceNone
Crown angle35.1°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG447090585
Dimensions5.53 × 5.50 × 3.43 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory grown diamond was created by high pressure high temperature process (HPHT). Type II
Top View
5.53 mm5.50 mm0.66 ctE / SI2
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateIGI LG447090585
Side View
Table 60.5%Crown 35.1°Girdle: ThickPavilion 41.1°Culet: NoneDepth 62.2%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £837 GBP|Low: £186 GBP|High: £849 GBP|Avg: £430 GBP|-0.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 5, 2026
Retailer 2£186 GBP
Retailer 5£328 GBP
Retailer 3£356 GBP
Retailer 4£436 GBP
MOH London£837 GBP

13 data points across 5 retailers

3 retailers£186 GBP to £837 GBP

B+
Cheapest Retailer
-
£186 GBP
B
Retailer 2
-
£356 GBP
View
Most Expensive
C
MOH London
LG447090585 · Nov 5
£837 GBP
View
2 more retailers have this diamond
Prices start from £186 GBPSave up to £651 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+
0.66ct Round
£186 GBP