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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 $584 USD
As of October 29, 2026
Save $1,816 USD (76%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $2,917 USD 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 29, 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 29
Current: $741 USD|Low: $503 USD|High: $2,734 USD|Avg: $1,292 USD|+15.5%
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 30, 2026
Retailer 3$584 USD
Retailer 6$647 USD
Retailer 1$741 USD
Retailer 11$745 USD
Retailer 10$901 USD
Retailer 8$1,003 USD
Retailer 4$1,004 USD
Retailer 14$1,004 USD
Retailer 15$1,322 USD
Retailer 9$1,367 USD
Retailer 12$1,392 USD
Retailer 2$2,104 USD
Retailer 5$2,221 USD
Retailer 7$2,400 USD
Retailer 13$2,717 USD

33 data points across 15 retailers

16 retailers$584 USD to $2,400 USD

A
Cheapest Retailer
-
$584 USD
Final sale: no returns
Retailer 2
-
$647 USD
View
Price last confirmed 20 days ago
A
Retailer 3
-
$741 USD
£583 GBP
View
A
Retailer 4
-
$745 USD
View
A
Retailer 5
-
$901 USD
€858 EUR
View
A
Retailer 6
-
$1,003 USD
£790 GBP
View
A
Retailer 7
-
$1,004 USD
View
A
Retailer 8
-
$1,004 USD
View
A
Retailer 9
-
$1,322 USD
View
A
Retailer 10
-
$1,367 USD
A$2,103 AUD
View
Retailer 11
-
$1,392 USD
ZAR 22,493 ZAR
View
Price last confirmed 11 days ago
B+
Retailer 12
-
$2,104 USD
View
B+
Retailer 13
-
$2,221 USD
View
B
Retailer 14
-
$2,400 USD
View
Retailer 15
-
$2,717 USD
£2,139 GBP
View
Price last confirmed 9 days ago
Most Expensive
Rare Carat
674847 · Jul 27
$2,917 USD
View
Price last confirmed 95 days ago
15 more retailers have this diamond
Prices start from $584 USDSave up to $1,816 USD

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
$584 USD