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Radiant|Lab Grown|IGI

1.74ct F SI1 Radiant Lab Grown Diamond

VG • F/SI1 • IGI LG669447626

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

Certificate IGI LG669447626

Diamond specifications and retailer prices

From £416 GBP
$558 USD
As of November 2, 2026
Save £168 GBP (29%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £584 GBP at Diamond Quarter · As of November 2, 2026
View at Diamond Quarter

About this 1.74ct lab-grown radiant diamond

This 1.74ct lab-grown radiant sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG669447626 or 669447626. Listed at 2 retailers as of November 2, 2026, with prices from £416 to £584, a £168 spread on the same certified stone. Diamond Quarter lists it at £584. 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

1.74
Carat
F
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.6°
Pavilion angle35.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG669447626
Dimensions8.47 × 5.97 × 3.95 mm
L/W Ratio1.42
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.47 mm5.97 mm1.74 ctF / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG669447626
Side View
Table 64.0%Crown 40.6°Girdle: MediumPavilion 35.4°Culet: NoneDepth 66.2%

Caratlytics Score

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

Last verified: Nov 2
Current: £416 GBP|Low: £406 GBP|High: £613 GBP|Avg: £476 GBP|-32.1%
September 23, 2026
Retailer 1£416 GBP

4 data points across 1 retailer

2 retailers£416 GBP to £584 GBP

B+
Cheapest Retailer
-
£416 GBP
$558 USD
Most Expensive
B
Diamond Quarter
1.74SI1FLG2669F6N · Nov 2
£584 GBP
View
1 more retailer has this diamond
Prices start from £416 GBPSave up to £168 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+
1.74ct Radiant
£416 GBP