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Radiant|Lab Grown|IGI

1.00ct F SI2 Radiant Lab Grown Diamond

VG • F/SI2 • IGI LG851650408

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG851650408

Diamond specifications and retailer prices

From £155 GBP
As of November 6, 2026
Save £794 GBP (84%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £950 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 1ct lab-grown radiant diamond

This 1ct lab-grown radiant sits in the classic one-carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI LG851650408 or 851650408. Listed at 6 retailers as of November 5, 2026, with prices from £155 to £950, a £794 spread on the same certified stone. MOH London lists it at £950. 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
F
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.9°
Pavilion angle26.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG851650408
Dimensions6.76 × 4.90 × 3.05 mm
L/W Ratio1.38
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.76 mm4.90 mm1.00 ctF / SI2
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG851650408
Side View
Table 69.0%Crown 40.9°Girdle: ThickPavilion 26.3°Culet: NoneDepth 62.2%

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 6
Current: £950 GBP|Low: £155 GBP|High: £953 GBP|Avg: £322 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 5, 2026
Retailer 5£155 GBP
Retailer 4£195 GBP
Retailer 6£217 GBP
Retailer 2£234 GBP
Retailer 3£355 GBP
MOH London£950 GBP

7 data points across 6 retailers

6 retailers£155 GBP to £950 GBP

B+
Cheapest Retailer
-
£155 GBP
B+
Retailer 2
-
£195 GBP
View
B+
Retailer 3
-
£217 GBP
View
A
Retailer 4
-
£234 GBP
View
B
Retailer 5
-
£355 GBP
View
Most Expensive
C
MOH London
LG851650408 · Nov 5
£950 GBP
View
5 more retailers have this diamond
Prices start from £155 GBPSave up to £794 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 Radiant
£155 GBP