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Marquise|Lab Grown|IGI

3.08ct E SI1 Marquise Lab Grown Diamond

EX • E/SI1 • IGI LG830663330

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG830663330

Diamond specifications and retailer prices

From £303 GBP
$406 USD
As of October 31, 2026
Save £1,779 GBP (85%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £2,082 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 3.08ct lab-grown marquise diamond

This 3.08ct 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 LG830663330 or 830663330. Listed at 4 retailers as of October 31, 2026, with prices from £303 to £2,082, a £1,779 spread on the same certified stone. Brilliant Earth lists it at £2,082. 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

3.08
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.4°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG830663330
Dimensions15.02 × 7.53 × 4.72 mm
L/W Ratio1.99
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
15.02 mm7.53 mm3.08 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG830663330
Side View
Table 60.0%Crown 36.4°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 62.7%

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: Oct 31
Current: £2,082 GBP|Low: £303 GBP|High: £2,082 GBP|Avg: £811 GBP
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 1, 2026
Retailer 3£303 GBP
Retailer 7£440 GBP
Retailer 5£508 GBP
Retailer 2£627 GBP
Retailer 6£755 GBP
Retailer 4£1,608 GBP
Brilliant Earth£2,082 GBP

37 data points across 7 retailers

4 retailers£303 GBP to £2,082 GBP

A
Cheapest Retailer
-
£303 GBP
$406 USD
Final sale: no returns
A
Retailer 2
-
£627 GBP
View
Retailer 3
-
£1,608 GBP
$2,155 USD
View
Price last confirmed 11 days ago
Most Expensive
B
Brilliant Earth
21225775A · Oct 31
£2,082 GBP
$2,790 USD
View
3 more retailers have this diamond
Prices start from £303 GBPSave up to £1,779 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
3.08ct Marquise
£303 GBP