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Marquise|Lab Grown|IGI

3.06ct F SI1 Marquise Lab Grown Diamond

EX • F/SI1 • IGI LG825690982

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG825690982

Diamond specifications and retailer prices

From £311 GBP
As of November 6, 2026
Save £1,729 GBP (85%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £2,040 GBP at Brilliant Earth · As of November 4, 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 F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG825690982 or 825690982. Listed at 11 retailers as of November 4, 2026, with prices from £311 to £2,040, a £1,729 spread on the same certified stone. Brilliant Earth lists it at £2,040. 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
F
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.8°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG825690982
Dimensions14.46 × 7.60 × 4.86 mm
L/W Ratio1.90
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
14.46 mm7.60 mm3.06 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG825690982
Side View
Table 59.0%Crown 37.8°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 63.9%

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 6
Current: £2,040 GBP|Low: £298 GBP|High: £2,040 GBP|Avg: £993 GBP
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 5£311 GBP
Retailer 8£348 GBP
Retailer 2£469 GBP
Retailer 9£607 GBP
Retailer 11£664 GBP
Retailer 10£1,072 GBP
Retailer 7£1,081 GBP
Retailer 6£1,239 GBP
Retailer 4£1,411 GBP
Retailer 3£1,542 GBP
Brilliant Earth£2,040 GBP

30 data points across 11 retailers

11 retailers£311 GBP to £2,040 GBP

A
Cheapest Retailer
-
£311 GBP
A
Retailer 2
-
£348 GBP
View
A
Retailer 3
-
£469 GBP
View
Retailer 4
-
£607 GBP
View
Price last confirmed 12 days ago
A
Retailer 5
-
£664 GBP
View
B+
Retailer 6
-
£1,072 GBP
View
B+
Retailer 7
-
£1,081 GBP
View
B
Retailer 8
-
£1,239 GBP
View
B+
Retailer 9
-
£1,411 GBP
View
Retailer 10
-
£1,542 GBP
View
Price last confirmed 24 days ago
Most Expensive
B
Brilliant Earth
21703209A · Nov 4
£2,040 GBP
$2,730 USD
View
10 more retailers have this diamond
Prices start from £311 GBPSave up to £1,729 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
£311 GBP