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Radiant|Lab Grown|IGI

3.08ct F SI1 Radiant Lab Grown Diamond

VG • F/SI1 • IGI LG729548887

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

Certificate IGI LG729548887

Diamond specifications and retailer prices

From £611 GBP
$819 USD
As of October 30, 2026
Save £659 GBP (52%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £1,496 GBP at Rare Carat · As of October 18, 2026
View at Rare Carat

About this 3.08ct lab-grown radiant diamond

This 3.08ct lab-grown radiant sits in the three to five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG729548887 or 729548887. Listed at 7 retailers as of October 30, 2026, with a 108% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

3.08
Carat
F
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.6°
Pavilion angle36.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG729548887
Dimensions10.32 × 7.12 × 4.93 mm
L/W Ratio1.45
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.32 mm7.12 mm3.08 ctF / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG729548887
Side View
Table 66.0%Crown 42.6°Girdle: Slightly ThickPavilion 36.8°Culet: NoneDepth 69.2%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £1,496 GBP|Low: £593 GBP|High: £1,546 GBP|Avg: £980 GBP|-3.2%
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 31, 2026
Retailer 4£611 GBP
Retailer 2£638 GBP
Retailer 5£669 GBP
Retailer 6£790 GBP
Retailer 7£1,270 GBP
Retailer 3£1,430 GBP
Rare Carat£1,496 GBP

30 data points across 7 retailers

7 retailers£611 GBP to £1,270 GBP

B+
Cheapest Retailer
-
£611 GBP
$819 USD
A
Retailer 2
-
£638 GBP
View
A
Retailer 3
-
£669 GBP
$897 USD
View
B+
Retailer 4
-
£790 GBP
$1,059 USD
View
B
Retailer 5
-
£1,270 GBP
$1,702 USD
View
Retailer 6
-
£1,430 GBP
View
Price last confirmed 14 days ago
Most Expensive
Rare Carat
U-14-A_l_729548887 · Oct 18
£1,496 GBP
$2,005 USD
View
Price last confirmed 14 days ago
6 more retailers have this diamond
Prices start from £611 GBPSave up to £659 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
3.08ct Radiant
£611 GBP