Radiant|Lab Grown|IGI

4.05ct D SI1 Radiant Lab Grown Diamond

EX • D/SI1 • IGI LG687569456

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

Certificate IGI LG687569456

Diamond specifications and retailer prices

From €439 EUR
$491 USD
As of October 29, 2026
1 retailer carries this diamond
Only listing: €439 EUR at William & Sons Jewelers
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at William & Sons Jewelers

About this 4.05ct lab-grown radiant diamond

This 4.05ct lab-grown radiant sits in the three to five carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG687569456 or 687569456. Listed at a single retailer as of October 29, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

4.05
Carat
D
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle45.2°
Pavilion angle35.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG687569456
Dimensions10.79 × 7.99 × 5.36 mm
L/W Ratio1.35
Culet sizePointed
Top View
10.79 mm7.99 mm4.05 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG687569456
Side View
Table 67.0%Crown 45.2°Girdle: MED-STKPavilion 35.7°Culet: NoneDepth 67.1%

Caratlytics Score

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

Last verified: Oct 29
Current: €727 EUR|Low: €292 EUR|High: €1,827 EUR|Avg: €847 EUR
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
William & Sons Jewelers
October 27, 2026
William & Sons Jewelers€439 EUR
Retailer 3€443 EUR
Retailer 5€678 EUR
Retailer 1€727 EUR
Retailer 2€735 EUR
Retailer 6€1,105 EUR
Retailer 4€1,827 EUR

9 data points across 7 retailers

1 retailer

B+
William & Sons Jewelers
cert_LG687569456 · Oct 29
€439 EUR
$491 USD
View
Final sale: no returns

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+
4.05ct Radiant
€439 EUR