CaratHunter
Plans
Round|Lab Grown|IGI

1.20ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG756549330

Shape and cutting style on the report: Round brilliant

Certificate IGI LG756549330

Diamond specifications and retailer prices

From £276 GBP
As of November 5, 2026
Save £506 GBP (65%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £782 GBP at MOH London · As of November 5, 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 LG756549330 or 756549330. Listed at 7 retailers as of November 5, 2026, with prices from £276 to £782, a £506 spread on the same certified stone. MOH London lists it at £782. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG756549330
Dimensions6.91 × 6.87 × 4.10 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
6.91 mm6.87 mm1.20 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG756549330
Side View
Table 59.0%Crown 33.5°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 59.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: £782 GBP|Low: £275 GBP|High: £786 GBP|Avg: £371 GBP|+0.7%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 5, 2026
Retailer 7£276 GBP
Retailer 5£283 GBP
Retailer 4£296 GBP
Retailer 2£299 GBP
Retailer 6£319 GBP
Retailer 3£351 GBP
MOH London£782 GBP

41 data points across 7 retailers

7 retailers£276 GBP to £782 GBP

A
Cheapest Retailer
-
£276 GBP
Retailer 2
-
£283 GBP
View
Price last confirmed 8 days ago
A
Retailer 3
-
£296 GBP
View
A
Retailer 4
-
£299 GBP
View
B+
Retailer 5
-
£319 GBP
View
B+
Retailer 6
-
£351 GBP
View
Most Expensive
B
MOH London
LG756549330 · Nov 5
£782 GBP
View
6 more retailers have this diamond
Prices start from £276 GBPSave up to £506 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
£276 GBP