Radiant|Lab Grown|IGI

4.05ct E SI2 Radiant Lab Grown Diamond

VG • E/SI2 • IGI LG851625454

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

Certificate IGI LG851625454

Diamond specifications and retailer prices

From €840 EUR
$939 USD
As of October 30, 2026
Save €342 EUR (29%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: €1,182 EUR at Adiamor · As of October 31, 2026
View at Adiamor

About this 4.05ct lab-grown radiant diamond

This 4.05ct lab-grown radiant sits in the three to five carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI LG851625454 or 851625454. Listed at 3 retailers as of October 30, 2026, with prices from €840 to €1,182, a €342 spread on the same certified stone. Adiamor lists it at €1,182. 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

4.05
Carat
E
Color
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle30.6°
Pavilion angle32.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG851625454
Dimensions11.35 × 7.54 × 5.13 mm
L/W Ratio1.51
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.35 mm7.54 mm4.05 ctE / SI2
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG851625454
Side View
Table 63.0%Crown 30.6°Girdle: STK-THKPavilion 32.2°Culet: NoneDepth 68.0%

Caratlytics Score

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

Price History

Last verified: Oct 30
Current: €1,182 EUR|Low: €840 EUR|High: €1,182 EUR|Avg: €946 EUR
Adiamor
Retailer 2
Retailer 3
November 1, 2026
Retailer 3€840 EUR
Retailer 2€897 EUR
Adiamor€1,182 EUR

3 data points across 3 retailers

3 retailers€840 EUR to €1,182 EUR

B+
Cheapest Retailer
-
€840 EUR
$939 USD
A
Retailer 2
-
€897 EUR
£789 GBP
View
Most Expensive
B+
Adiamor
D-82884235 · Oct 31
€1,182 EUR
$1,321 USD
View
2 more retailers have this diamond
Prices start from €840 EURSave up to €342 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.

A
4.05ct Radiant
€840 EUR