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Radiant|Lab Grown|IGI

0.98ct F SI1 Radiant Lab Grown Diamond

F/SI1 • IGI LG641487856

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

Certificate IGI LG641487856

Diamond specifications and retailer prices

From £308 GBP
As of November 2, 2026
Save £75 GBP (20%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £382 GBP at MD Diamonds and Jewellers · As of November 2, 2026
View at MD Diamonds and Jewellers

About this 0.98ct lab-grown radiant diamond

This 0.98ct lab-grown radiant sits in the just-under-one-carat band, graded F colour (colourless) and SI1 clarity (slightly-included) and certified by IGI LG641487856 or 641487856. Listed at 2 retailers as of November 2, 2026, with prices from £308 to £382, a £75 spread on the same certified stone. MD Diamonds and Jewellers lists it at £382. 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

0.98
Carat
F
Colour
SI1
Clarity
-
Cut

Specifications

Cut
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.7°
Pavilion angle35.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG641487856
Dimensions6.86 × 4.99 × 3.32 mm
L/W Ratio1.37
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.86 mm4.99 mm0.98 ctF / SI1
OriginLab Grown
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG641487856
Side View
Table 66.0%Crown 44.7°Girdle: MED-STKPavilion 35.6°Culet: NoneDepth 66.5%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 2
Current: £382 GBP|Low: £382 GBP|High: £382 GBP|Avg: £382 GBP
December 30, 2025
MD Diamonds and Jewellers£382 GBP

3 data points across 1 retailer

2 retailers£308 GBP to £382 GBP

B+
Cheapest Retailer
-
£308 GBP
Most Expensive
B
MD Diamonds and Jewellers
LG641487856 · Nov 2
£382 GBP
View
1 more retailer has this diamond
Prices start from £308 GBPSave up to £75 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+
0.98ct Radiant
£308 GBP