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Round|Lab Grown|IGI

1.00ct G SI1 Round Lab Grown Diamond

VG • G/SI1 • IGI LG846647435

Shape and cutting style on the report: Round brilliant

Certificate IGI LG846647435

Diamond specifications and retailer prices

From £187 GBP
$250 USD
As of October 30, 2026
Save £458 GBP (71%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £645 GBP at MOH London · As of October 25, 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 very-good cut grade and certified by IGI LG846647435 or 846647435. Listed at 10 retailers as of October 25, 2026, with prices from £187 to £645, a £458 spread on the same certified stone. MOH London lists it at £645. 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

1.00
Carat
G
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle36.2°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG846647435
Dimensions6.32 × 6.26 × 3.88 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
6.32 mm6.26 mm1.00 ctG / SI1
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG846647435
Side View
Table 64.0%Crown 36.2°Girdle: ThickPavilion 40.3°Culet: NoneDepth 61.7%

Caratlytics Score

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

Price History

Last verified: Oct 30
Current: £645 GBP|Low: £187 GBP|High: £645 GBP|Avg: £360 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 10£187 GBP
Retailer 3£229 GBP
Retailer 7£237 GBP
Retailer 5£240 GBP
Retailer 4£291 GBP
Retailer 6£299 GBP
Retailer 2£331 GBP
Retailer 8£375 GBP
Retailer 9£484 GBP
MOH London£645 GBP

7 data points across 10 retailers

10 retailers£187 GBP to £645 GBP

B+
Cheapest Retailer
-
£187 GBP
$250 USD
B+
Retailer 2
-
£229 GBP
$307 USD
View
B+
Retailer 3
-
£237 GBP
View
B+
Retailer 4
-
£240 GBP
€306 EUR
View
B+
Retailer 5
-
£291 GBP
$390 USD
View
B
Retailer 6
-
£299 GBP
$400 USD
View
B
Retailer 7
-
£331 GBP
$444 USD
View
B
Retailer 8
-
£375 GBP
$503 USD
View
B
Retailer 9
-
£484 GBP
$649 USD
View
Most Expensive
C
MOH London
LG846647435 · Oct 25
£645 GBP
View
9 more retailers have this diamond
Prices start from £187 GBPSave up to £458 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+
1.00ct Round
£187 GBP