CaratHunter
Plans
Marquise|Lab Grown|IGI

2.05ct E SI1 Marquise Lab Grown Diamond

EX • E/SI1 • IGI LG818690291

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG818690291

Diamond specifications and retailer prices

From £211 GBP
As of November 4, 2026
Save £970 GBP (82%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £1,181 GBP at Brilliant Earth · As of November 1, 2026
View at Brilliant Earth

About this 2.05ct lab-grown marquise diamond

This 2.05ct lab-grown marquise sits in the two to three carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG818690291 or 818690291. Listed at 4 retailers as of November 1, 2026, with prices from £211 to £1,181, a £970 spread on the same certified stone. Brilliant Earth lists it at £1,181. 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

2.05
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.8°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818690291
Dimensions12.53 × 6.68 × 4.29 mm
L/W Ratio1.88
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.53 mm6.68 mm2.05 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818690291
Side View
Table 60.0%Crown 36.8°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 64.2%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: £1,181 GBP|Low: £211 GBP|High: £1,999 GBP|Avg: £652 GBP|-40.9%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 5, 2026
Retailer 3£211 GBP
Retailer 5£368 GBP
Retailer 7£394 GBP
Retailer 2£457 GBP
Retailer 6£480 GBP
Retailer 4£932 GBP
Brilliant Earth£1,181 GBP

38 data points across 7 retailers

4 retailers£211 GBP to £1,181 GBP

A
Cheapest Retailer
-
£211 GBP
Final sale: no returns
A
Retailer 2
-
£457 GBP
View
B
Retailer 3
-
£932 GBP
View
Most Expensive
B
Brilliant Earth
21228960A · Nov 1
£1,181 GBP
$1,590 USD
View
3 more retailers have this diamond
Prices start from £211 GBPSave up to £970 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
2.05ct Marquise
£211 GBP