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Round|Lab Grown|IGI

0.50ct I SI1 Round Lab Grown Diamond

VG • I/SI1 • IGI LG425066218

Shape and cutting style on the report: Round brilliant

Certificate IGI LG425066218

Diamond specifications and retailer prices

From £202 GBP
$270 USD
As of October 29, 2026
Save £804 GBP (80%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £1,006 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 0.5ct lab-grown round diamond

This 0.5ct lab-grown round sits in the half to three-quarter carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG425066218 or 425066218. Listed at 11 retailers as of October 29, 2026, with prices from £202 to £1,006, a £804 spread on the same certified stone. MOH London lists it at £1,006. 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

0.50
Carat
I
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle37.2°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG425066218
Dimensions4.99 × 4.94 × 3.20 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
4.99 mm4.94 mm0.50 ctI / SI1
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG425066218
Side View
Table 55.5%Crown 37.2°Girdle: STK-THKPavilion 40.6°Culet: NoneDepth 64.5%

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 29
Current: £1,006 GBP|Low: £193 GBP|High: £1,012 GBP|Avg: £409 GBP|+0.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 29, 2026
Retailer 6£202 GBP
Retailer 4£212 GBP
Retailer 10£225 GBP
Retailer 11£234 GBP
Retailer 7£239 GBP
Retailer 8£249 GBP
Retailer 12£369 GBP
Retailer 9£414 GBP
Retailer 2£468 GBP
Retailer 3£511 GBP
Retailer 5£766 GBP
MOH London£1,006 GBP

18 data points across 12 retailers

11 retailers£202 GBP to £1,006 GBP

B+
Cheapest Retailer
-
£202 GBP
$270 USD
B+
Retailer 2
-
£225 GBP
$302 USD
View
Final sale: no returns
B+
Retailer 3
-
£234 GBP
$313 USD
View
B+
Retailer 4
-
£239 GBP
$320 USD
View
B+
Retailer 5
-
£249 GBP
$334 USD
View
B+
Retailer 6
-
£249 GBP
$334 USD
View
B
Retailer 7
-
£414 GBP
$555 USD
View
B
Retailer 8
-
£468 GBP
€597 EUR
View
B
Retailer 9
-
£766 GBP
$1,027 USD
View
B
Retailer 10
-
£802 GBP
$1,075 USD
View
Most Expensive
B
MOH London
LG425066218 · Oct 29
£1,006 GBP
View
10 more retailers have this diamond
Prices start from £202 GBPSave up to £804 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+
0.50ct Round
£202 GBP