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Cushion|Lab Grown|IGI

3.06ct F VS1 Cushion Lab Grown Diamond

EX • F/VS1 • IGI LG845670040

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG845670040

Diamond specifications and retailer prices

From £384 GBP
$515 USD
As of November 1, 2026
Save £2,373 GBP (86%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £4,745 GBP at Cape Diamonds · As of October 29, 2026
View at Cape Diamonds

About this 3.06ct lab-grown cushion diamond

This 3.06ct lab-grown cushion sits in the three to five carat band, graded F colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG845670040 or 845670040. Listed at 16 retailers as of November 1, 2026, with a 617% 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
F
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.1°
Pavilion angle39.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG845670040
Dimensions8.58 × 8.52 × 5.12 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeLarge
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.58 mm8.52 mm3.06 ctF / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG845670040
Side View
Table 66.0%Crown 43.1°Girdle: MED-THKPavilion 39.2°Culet: LargeDepth 60.1%

Caratlytics Score

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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: Nov 1
Current: £4,745 GBP|Low: £384 GBP|High: £278,197 GBP|Avg: £67,219 GBP
Cape Diamonds
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
Retailer 16
November 1, 2026
Retailer 11£384 GBP
Retailer 12£500 GBP
Retailer 4£618 GBP
Retailer 16£618 GBP
Retailer 10£643 GBP
Retailer 9£647 GBP
Retailer 15£897 GBP
Retailer 7£1,286 GBP
Retailer 6£1,334 GBP
Retailer 5£1,424 GBP
Retailer 3£1,437 GBP
Retailer 2£1,441 GBP
Retailer 14£1,532 GBP
Retailer 13£2,757 GBP
Cape Diamonds£4,745 GBP
Retailer 8£136,102 GBP

8 data points across 16 retailers

16 retailers£384 GBP to £2,757 GBP

A
Cheapest Retailer
-
£384 GBP
$515 USD
Final sale: no returns
A
Retailer 2
-
£500 GBP
$670 USD
View
A
Retailer 3
-
£618 GBP
$828 USD
View
B+
Retailer 4
-
£618 GBP
$828 USD
View
A
Retailer 5
-
£643 GBP
€821 EUR
View
A
Retailer 6
-
£647 GBP
View
A
Retailer 7
-
£897 GBP
$1,202 USD
View
B+
Retailer 8
-
£1,286 GBP
$1,722 USD
View
B+
Retailer 9
-
£1,334 GBP
$1,788 USD
View
B+
Retailer 10
-
£1,424 GBP
$1,908 USD
View
B+
Retailer 11
-
£1,437 GBP
$1,926 USD
View
B+
Retailer 12
-
£1,532 GBP
A$3,157 AUD
View
B
Retailer 13
-
£2,757 GBP
$3,694 USD
View
Most Expensive
Cape Diamonds
cert_845670040 · Oct 29
£4,745 GBP
ZAR 102,710 ZAR
View
Price under review
13 more retailers have this diamond
Prices start from £384 GBPSave up to £2,373 GBP

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
£384 GBP