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Radiant|Lab Grown|IGI

0.99ct G SI1 Radiant Lab Grown Diamond

G/SI1 • IGI LG625453559

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

Certificate IGI LG625453559

Diamond specifications and retailer prices

From $376 USD
£296 GBP
As of October 31, 2026
Save $80 USD (17%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $456 USD at MD Diamonds and Jewellers · As of October 29, 2026
View at MD Diamonds and Jewellers

About this 0.99ct lab-grown radiant diamond

This 0.99ct lab-grown radiant sits in the just-under-one-carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included) and certified by IGI LG625453559 or 625453559. Listed at 2 retailers as of October 29, 2026, with prices from $376 to $456, a $80 spread on the same certified stone. MD Diamonds and Jewellers lists it at $456. 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

0.99
Carat
G
Color
SI1
Clarity
-
Cut

Specifications

Cut
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle46.1°
Pavilion angle35.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG625453559
Dimensions6.94 × 4.92 × 3.33 mm
L/W Ratio1.41
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
6.94 mm4.92 mm0.99 ctG / SI1
OriginLab Grown
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG625453559
Side View
Table 65.0%Crown 46.1°Girdle: MediumPavilion 35.4°Culet: NoneDepth 67.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $456 USD|Low: $456 USD|High: $456 USD|Avg: $456 USD
December 30, 2025
MD Diamonds and Jewellers$456 USD

3 data points across 1 retailer

2 retailers$376 USD to $456 USD

B+
Cheapest Retailer
-
$376 USD
£296 GBP
Most Expensive
B
MD Diamonds and Jewellers
LG625453559 · Oct 29
$456 USD
£359 GBP
View
1 more retailer has this diamond
Prices start from $376 USDSave up to $80 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+
0.99ct Radiant
$376 USD