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Round|Lab Grown|IGI

1.20ct E SI1 Round Lab Grown Diamond

EX • E/SI1 • IGI LG787674471

Shape and cutting style on the report: Round brilliant

Certificate IGI LG787674471

Diamond specifications and retailer prices

From £204 GBP
As of November 6, 2026
Save £501 GBP (71%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £706 GBP at MOH London · As of November 2, 2026
View at MOH London

About this 1.2ct lab-grown round diamond

This 1.2ct lab-grown round sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG787674471 or 787674471. Listed at 10 retailers as of November 2, 2026, with prices from £204 to £706, a £501 spread on the same certified stone. MOH London lists it at £706. 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

1.20
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.3°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG787674471
Dimensions6.93 × 6.91 × 4.08 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.93 mm6.91 mm1.20 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG787674471
Side View
Table 60.0%Crown 32.3°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 58.9%

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: Nov 6
Current: £706 GBP|Low: £204 GBP|High: £714 GBP|Avg: £368 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 4£204 GBP
Retailer 3£259 GBP
Retailer 2£264 GBP
Retailer 6£273 GBP
Retailer 5£356 GBP
Retailer 8£392 GBP
Retailer 7£416 GBP
MOH London£706 GBP

41 data points across 8 retailers

10 retailers£204 GBP to £706 GBP

B+
Cheapest Retailer
-
£204 GBP
A
Retailer 2
-
£259 GBP
View
A
Retailer 3
-
£264 GBP
View
A
Retailer 4
-
£273 GBP
View
Retailer 5
-
£343 GBP
View
Price last confirmed 95 days ago
B+
Retailer 6
-
£356 GBP
View
B+
Retailer 7
-
£392 GBP
View
Retailer 8
-
£416 GBP
View
Price last confirmed 9 days ago
B
Retailer 9
-
£526 GBP
View
Most Expensive
B
MOH London
LG787674471 · Nov 2
£706 GBP
View
9 more retailers have this diamond
Prices start from £204 GBPSave up to £501 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
1.20ct Round
£204 GBP