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Marquise|Lab Grown|IGI

3.06ct E SI1 Marquise Lab Grown Diamond

EX • E/SI1 • IGI LG841645599

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG841645599

Diamond specifications and retailer prices

From £294 GBP
$394 USD
As of October 31, 2026
Save £1,773 GBP (86%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £2,067 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 3.06ct lab-grown marquise diamond

This 3.06ct lab-grown marquise sits in the three to five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG841645599 or 841645599. Listed at 4 retailers as of October 31, 2026, with prices from £294 to £2,067, a £1,773 spread on the same certified stone. Brilliant Earth lists it at £2,067. 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

3.06
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG841645599
Dimensions14.77 × 7.49 × 4.82 mm
L/W Ratio1.97
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
14.77 mm7.49 mm3.06 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG841645599
Side View
Table 62.0%Crown 35.4°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 64.4%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 31
Current: £2,067 GBP|Low: £294 GBP|High: £2,067 GBP|Avg: £1,195 GBP
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
November 1, 2026
Retailer 3£294 GBP
Retailer 2£610 GBP
Retailer 4£1,601 GBP
Brilliant Earth£2,067 GBP

25 data points across 4 retailers

4 retailers£294 GBP to £2,067 GBP

A
Cheapest Retailer
-
£294 GBP
$394 USD
Final sale: no returns
A
Retailer 2
-
£610 GBP
View
Retailer 3
-
£1,601 GBP
$2,145 USD
View
Price last confirmed 11 days ago
Most Expensive
B
Brilliant Earth
21706818A · Oct 31
£2,067 GBP
$2,770 USD
View
3 more retailers have this diamond
Prices start from £294 GBPSave up to £1,773 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 Marquise
£294 GBP