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Radiant|Lab Grown|IGI

1.13ct F SI1 Radiant Lab Grown Diamond

GD • F/SI1 • IGI LG662421220

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

Certificate IGI LG662421220

Diamond specifications and retailer prices

From $436 USD
As of November 2, 2026
Save $33 USD (7%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $469 USD at Diamond Quarter · As of November 2, 2026
View at Diamond Quarter

About this 1.13ct lab-grown radiant diamond

This 1.13ct lab-grown radiant sits in the classic one-carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI LG662421220 or 662421220. Listed at 2 retailers as of November 2, 2026, with a relatively tight 8% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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

1.13
Carat
F
Color
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.6°
Pavilion angle34.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG662421220
Dimensions7.45 × 5.02 × 3.44 mm
L/W Ratio1.48
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.45 mm5.02 mm1.13 ctF / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG662421220
Side View
Table 64.0%Crown 43.6°Girdle: MediumPavilion 34.1°Culet: NoneDepth 68.5%

Caratlytics Score

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

Last verified: Nov 2
Current: $436 USD|Low: $428 USD|High: $621 USD|Avg: $490 USD|-29.8%
September 23, 2026
Retailer 1$436 USD

4 data points across 1 retailer

2 retailers$436 USD to $469 USD

B+
Cheapest Retailer
-
$436 USD
Most Expensive
B
Diamond Quarter
1.13SI1FLG2020C4N · Nov 2
$469 USD
£369 GBP
View
1 more retailer has this diamond
Prices start from $436 USDSave up to $33 USD

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+
1.13ct Radiant
$436 USD