CaratHunter
Plans
Radiant|Lab Grown|IGI

1.00ct G SI2 Radiant Lab Grown Diamond

G/SI2 • IGI LG577363455

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

Certificate IGI LG577363455

Diamond specifications and retailer prices

From €435 EUR
£383 GBP
As of October 29, 2026
Save €31 EUR (7%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: €467 EUR at Diamond Quarter · As of October 31, 2026
View at Diamond Quarter

About this 1ct lab-grown radiant diamond

This 1ct lab-grown radiant sits in the classic one-carat band, graded G colour (near-colourless) and SI2 clarity (slightly-included) and certified by IGI LG577363455 or 577363455. Listed at 2 retailers as of October 29, 2026, with a relatively tight 7% 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

1.00
Carat
G
Color
SI2
Clarity
-
Cut

Specifications

Cut
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44°
Pavilion angle35.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG577363455
Dimensions7.18 × 4.87 × 3.29 mm
L/W Ratio1.47
Culet sizePointed
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
7.18 mm4.87 mm1.00 ctG / SI2
OriginLab Grown
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG577363455
Side View
Table 63.0%Crown 44°Girdle: MediumPavilion 35.3°Culet: NoneDepth 67.6%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: €289 EUR|Low: €289 EUR|High: €435 EUR|Avg: €362 EUR
Retailer 1
Retailer 2
December 31, 2025
Retailer 1€289 EUR
Retailer 2€435 EUR

5 data points across 2 retailers

2 retailers€435 EUR to €467 EUR

B
Cheapest Retailer
-
€435 EUR
£383 GBP
Most Expensive
B
Diamond Quarter
1.0SI2GLG552FBDN · Oct 31
€467 EUR
£410 GBP
View
1 more retailer has this diamond
Prices start from €435 EURSave up to €31 EUR

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
1.00ct Radiant
€435 EUR