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Round|Lab Grown|IGI

1.00ct G SI1 Round Lab Grown Diamond

EX • G/SI1 • IGI LG807658118

Shape and cutting style on the report: Round brilliant

Certificate IGI LG807658118

Diamond specifications and retailer prices

From £102 GBP
$137 USD
As of October 29, 2026
Save £960 GBP (90%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £1,063 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1ct lab-grown round diamond

This 1ct lab-grown round sits in the classic one-carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG807658118 or 807658118. Listed at 11 retailers as of October 29, 2026, with prices from £102 to £1,063, a £960 spread on the same certified stone. MOH London lists it at £1,063. 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

1.00
Carat
G
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle33.4°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG807658118
Dimensions6.54 × 6.48 × 3.82 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.54 mm6.48 mm1.00 ctG / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG807658118
Side View
Table 62.0%Crown 33.4°Girdle: MediumPavilion 40.3°Culet: NoneDepth 58.7%

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: Oct 29
Current: £1,063 GBP|Low: £101 GBP|High: £1,063 GBP|Avg: £280 GBP|+1.7%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 31, 2026
Retailer 10£102 GBP
Retailer 8£119 GBP
Retailer 2£125 GBP
Retailer 4£215 GBP
Retailer 3£219 GBP
Retailer 9£237 GBP
Retailer 11£239 GBP
Retailer 7£310 GBP
Retailer 6£407 GBP
Retailer 5£430 GBP
MOH London£1,063 GBP

44 data points across 11 retailers

11 retailers£102 GBP to £1,063 GBP

A
Cheapest Retailer
-
£102 GBP
$137 USD
A
Retailer 2
-
£119 GBP
$159 USD
View
A
Retailer 3
-
£125 GBP
$168 USD
View
A
Retailer 4
-
£215 GBP
View
A
Retailer 5
-
£219 GBP
$294 USD
View
A
Retailer 6
-
£237 GBP
$317 USD
View
B+
Retailer 7
-
£239 GBP
€305 EUR
View
B+
Retailer 8
-
£310 GBP
$415 USD
View
B
Retailer 9
-
£407 GBP
$545 USD
View
B
Retailer 10
-
£430 GBP
$576 USD
View
Most Expensive
C
MOH London
LG807658118 · Oct 29
£1,063 GBP
View
10 more retailers have this diamond
Prices start from £102 GBPSave up to £960 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
1.00ct Round
£102 GBP