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Cushion|Lab Grown|IGI

4.05ct I VS1 Cushion Lab Grown Diamond

ID • I/VS1 • IGI LG830646771

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG830646771

Diamond specifications and retailer prices

From €1,634 EUR
$1,825 USD
As of October 31, 2026
Save €4,592 EUR (74%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: €6,225 EUR at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 4.05ct lab-grown cushion diamond

This 4.05ct lab-grown cushion sits in the three to five carat band, graded I colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG830646771 or 830646771. Listed at 10 retailers as of October 31, 2026, with prices from €1,634 to €6,225, a €4,592 spread on the same certified stone. Taylor and Hart lists it at €6,225. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

4.05
Carat
I
Color
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.2°
Pavilion angle36.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG830646771
Dimensions11.64 × 8.04 × 5.20 mm
L/W Ratio1.45
Girdle conditionFaceted
Culet sizeLarge
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.64 mm8.04 mm4.05 ctI / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG830646771
Side View
Table 49.0%Crown 37.2°Girdle: THK-VTKPavilion 36.7°Culet: LargeDepth 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: Oct 31
Current: €2,543 EUR|Low: €1,487 EUR|High: €6,772 EUR|Avg: €3,255 EUR|+2.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Taylor and Hart
October 31, 2026
Retailer 2€1,634 EUR
Retailer 9€1,868 EUR
Retailer 4€1,924 EUR
Retailer 7€1,933 EUR
Retailer 6€2,309 EUR
Retailer 1€2,543 EUR
Retailer 3€3,777 EUR
Retailer 5€4,395 EUR
Retailer 8€5,404 EUR
Taylor and Hart€6,225 EUR

28 data points across 10 retailers

10 retailers€1,634 EUR to €6,225 EUR

A
Cheapest Retailer
-
€1,634 EUR
$1,825 USD
B+
Retailer 2
-
€1,868 EUR
HK$16,300 HKD
View
B+
Retailer 3
-
€1,924 EUR
$2,150 USD
View
Retailer 4
-
€1,933 EUR
$2,160 USD
View
Price last confirmed 20 days ago
B+
Retailer 5
-
€2,309 EUR
$2,580 USD
View
B+
Retailer 6
-
€2,543 EUR
View
B
Retailer 7
-
€3,777 EUR
ZAR 68,169 ZAR
View
B
Retailer 8
-
€4,395 EUR
$4,910 USD
View
B
Retailer 9
-
€5,404 EUR
SGD 8,158 SGD
View
Most Expensive
B
Taylor and Hart
UMM3CPK · Oct 31
€6,225 EUR
$6,955 USD
View
9 more retailers have this diamond
Prices start from €1,634 EURSave up to €4,592 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 Cushion
€1,634 EUR