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Cushion|Lab Grown|IGI

3.06ct E VS1 Cushion Lab Grown Diamond

EX • E/VS1 • IGI LG670420305

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG670420305

Diamond specifications and retailer prices

From €523 EUR
$584 USD
As of October 31, 2026
Save €1,625 EUR (76%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: €2,611 EUR at Rare Carat · As of July 27, 2026
View at Rare Carat

About this 3.06ct lab-grown cushion diamond

This 3.06ct lab-grown cushion sits in the three to five carat band, graded E colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG670420305 or 670420305. Listed at 16 retailers as of October 30, 2026, with a 311% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

3.06
Carat
E
Color
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.9°
Pavilion angle39.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG670420305
Dimensions8.57 × 8.39 × 5.55 mm
L/W Ratio1.02
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.57 mm8.39 mm3.06 ctE / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG670420305
Side View
Table 62.0%Crown 33.9°Girdle: STK-THKPavilion 39.7°Culet: NoneDepth 66.2%

Caratlytics Score

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

Price History

Last verified: Oct 31
Current: €801 EUR|Low: €450 EUR|High: €2,447 EUR|Avg: €1,175 EUR|+1.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
October 31, 2026
Retailer 3€523 EUR
Retailer 6€579 EUR
Retailer 10€663 EUR
Retailer 9€703 EUR
Retailer 1€801 EUR
Retailer 8€898 EUR
Retailer 4€899 EUR
Retailer 14€899 EUR
Retailer 15€1,183 EUR
Retailer 11€1,224 EUR
Retailer 12€1,246 EUR
Retailer 2€1,884 EUR
Retailer 5€1,988 EUR
Retailer 7€2,148 EUR
Retailer 13€2,432 EUR

33 data points across 15 retailers

16 retailers€523 EUR to €2,148 EUR

A
Cheapest Retailer
-
€523 EUR
$584 USD
Final sale: no returns
Retailer 2
-
€579 EUR
$647 USD
View
Price last confirmed 21 days ago
A
Retailer 3
-
€663 EUR
£583 GBP
View
A
Retailer 4
-
€703 EUR
$785 USD
View
A
Retailer 5
-
€801 EUR
View
A
Retailer 6
-
€898 EUR
£790 GBP
View
A
Retailer 7
-
€899 EUR
$1,004 USD
View
A
Retailer 8
-
€899 EUR
$1,004 USD
View
A
Retailer 9
-
€1,183 EUR
$1,322 USD
View
A
Retailer 10
-
€1,224 EUR
A$2,103 AUD
View
Retailer 11
-
€1,246 EUR
ZAR 22,493 ZAR
View
Price last confirmed 12 days ago
B+
Retailer 12
-
€1,884 EUR
$2,104 USD
View
B+
Retailer 13
-
€1,988 EUR
$2,221 USD
View
B
Retailer 14
-
€2,148 EUR
$2,400 USD
View
Retailer 15
-
€2,432 EUR
£2,139 GBP
View
Price last confirmed 10 days ago
Most Expensive
Rare Carat
674847 · Jul 27
€2,611 EUR
$2,917 USD
View
Price last confirmed 96 days ago
15 more retailers have this diamond
Prices start from €523 EURSave up to €1,625 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
3.06ct Cushion
€523 EUR