CaratHunter
Plans
Cushion|Lab Grown|IGI

4.02ct F SI1 Cushion Lab Grown Diamond

ID • F/SI1 • IGI LG815609806

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG815609806

Diamond specifications and retailer prices

From €432 EUR
£381 GBP
As of November 2, 2026
Save €3,135 EUR (88%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: €3,566 EUR at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

About this 4.02ct lab-grown cushion diamond

This 4.02ct lab-grown cushion sits in the three to five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG815609806 or 815609806. Listed at 12 retailers as of November 2, 2026, with prices from €432 to €3,566, a €3,135 spread on the same certified stone. Brilliant Earth lists it at €3,566. 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

4.02
Carat
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle37.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG815609806
Dimensions10.45 × 8.35 × 5.40 mm
L/W Ratio1.25
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.45 mm8.35 mm4.02 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG815609806
Side View
Table 67.0%Crown 34.9°Girdle: STK-THKPavilion 37.1°Culet: NoneDepth 64.7%

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: Nov 2
Current: €3,566 EUR|Low: €428 EUR|High: €5,269 EUR|Avg: €1,166 EUR|-32.3%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 2€432 EUR
Retailer 11€452 EUR
Retailer 4€494 EUR
Retailer 8€629 EUR
Retailer 3€670 EUR
Retailer 5€822 EUR
Retailer 7€838 EUR
Retailer 9€868 EUR
Retailer 10€1,011 EUR
Retailer 12€1,637 EUR
Retailer 6€1,839 EUR
Brilliant Earth€3,566 EUR

38 data points across 12 retailers

12 retailers€432 EUR to €3,566 EUR

A
Cheapest Retailer
-
€432 EUR
£381 GBP
A
Retailer 2
-
€452 EUR
$507 USD
View
Final sale: no returns
Retailer 3
-
€494 EUR
$554 USD
View
Price last confirmed 17 days ago
A
Retailer 4
-
€629 EUR
$705 USD
View
B+
Retailer 5
-
€670 EUR
$752 USD
View
A
Retailer 6
-
€822 EUR
£726 GBP
View
A
Retailer 7
-
€838 EUR
View
A
Retailer 8
-
€868 EUR
$974 USD
View
A
Retailer 9
-
€1,011 EUR
$1,134 USD
View
B+
Retailer 10
-
€1,637 EUR
$1,837 USD
View
B+
Retailer 11
-
€1,839 EUR
£1,624 GBP
View
Most Expensive
B
Brilliant Earth
20694023A · Nov 2
€3,566 EUR
$4,000 USD
View
11 more retailers have this diamond
Prices start from €432 EURSave up to €3,135 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
4.02ct Cushion
€432 EUR