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Round|Lab Grown|IGI

1.35ct E SI1 Round Lab Grown Diamond

VG • E/SI1 • IGI LG800681215

Shape and cutting style on the report: Round brilliant

Certificate IGI LG800681215

Diamond specifications and retailer prices

From £140 GBP
$187 USD
As of October 29, 2026
Save £674 GBP (83%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £813 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.35ct lab-grown round diamond

This 1.35ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG800681215 or 800681215. Listed at 15 retailers as of October 29, 2026, with prices from £140 to £813, a £674 spread on the same certified stone. MOH London lists it at £813. 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

1.35
Carat
E
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.6°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG800681215
Dimensions7.16 × 7.12 × 4.27 mm
L/W Ratio1.01
Girdle conditionFaceted
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
7.16 mm7.12 mm1.35 ctE / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG800681215
Side View
Table 58.0%Crown 33.6°Girdle: Slightly ThickPavilion 40°Culet: NoneDepth 59.9%

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: Oct 29
Current: £813 GBP|Low: £134 GBP|High: £819 GBP|Avg: £341 GBP|-0.7%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
October 30, 2026
Retailer 12£140 GBP
Retailer 13£156 GBP
Retailer 6£165 GBP
Retailer 5£173 GBP
Retailer 9£291 GBP
Retailer 4£305 GBP
Retailer 8£313 GBP
Retailer 3£337 GBP
Retailer 7£338 GBP
Retailer 14£361 GBP
Retailer 10£381 GBP
Retailer 11£456 GBP
Retailer 2£500 GBP
MOH London£813 GBP

33 data points across 14 retailers

15 retailers£140 GBP to £813 GBP

A
Cheapest Retailer
-
£140 GBP
$187 USD
A
Retailer 2
-
£156 GBP
$209 USD
View
Final sale: no returns
Retailer 3
-
£165 GBP
$221 USD
View
Price last confirmed 45 days ago
A
Retailer 4
-
£173 GBP
$232 USD
View
A
Retailer 5
-
£291 GBP
€371 EUR
View
B+
Retailer 6
-
£305 GBP
$408 USD
View
B+
Retailer 7
-
£313 GBP
View
B+
Retailer 8
-
£337 GBP
$452 USD
View
B+
Retailer 9
-
£338 GBP
View
B+
Retailer 10
-
£361 GBP
$484 USD
View
B+
Retailer 11
-
£381 GBP
$510 USD
View
B
Retailer 12
-
£456 GBP
$611 USD
View
B+
Retailer 13
-
£500 GBP
$670 USD
View
Retailer 14
-
£514 GBP
$689 USD
View
Price last confirmed 45 days ago
Most Expensive
B
MOH London
LG800681215 · Oct 29
£813 GBP
View
14 more retailers have this diamond
Prices start from £140 GBPSave up to £674 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
1.35ct Round
£140 GBP