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Marquise|Lab Grown|IGI

1.17ct E SI1 Marquise Lab Grown Diamond

VG • E/SI1 • IGI LG845669343

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG845669343

Diamond specifications and retailer prices

From £126 GBP
As of November 4, 2026
Save £526 GBP (81%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £652 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 1.17ct lab-grown marquise diamond

This 1.17ct lab-grown marquise sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG845669343 or 845669343. Listed at 14 retailers as of November 4, 2026, with prices from £126 to £652, a £526 spread on the same certified stone. MOH London lists it at £652. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.17
Carat
E
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle33.8°
Pavilion angle42°
OriginLab Grown
Grading LabIGI
CertificateIGI LG845669343
Dimensions10.52 × 5.47 × 3.58 mm
L/W Ratio1.92
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.52 mm5.47 mm1.17 ctE / SI1
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG845669343
Side View
Table 63.0%Crown 33.8°Girdle: STK-THKPavilion 42°Culet: NoneDepth 65.4%

Caratlytics Score

How it works →
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 4
Current: £652 GBP|Low: £113 GBP|High: £652 GBP|Avg: £271 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 11£113 GBP
Retailer 12£126 GBP
Retailer 4£161 GBP
Retailer 6£180 GBP
Retailer 10£238 GBP
Retailer 2£241 GBP
Retailer 13£256 GBP
Retailer 7£272 GBP
Retailer 5£282 GBP
Retailer 8£362 GBP
Retailer 9£457 GBP
Retailer 3£462 GBP
MOH London£652 GBP

12 data points across 13 retailers

14 retailers£126 GBP to £652 GBP

Retailer 1
-
£113 GBP
Price last confirmed 14 days ago
A
Retailer 2
-
£126 GBP
View
Final sale: no returns
B+
Retailer 3
-
£161 GBP
View
A
Retailer 4
-
£180 GBP
View
Retailer 5
-
£238 GBP
View
Price last confirmed 12 days ago
B+
Retailer 6
-
£241 GBP
View
B+
Retailer 7
-
£256 GBP
View
B+
Retailer 8
-
£272 GBP
View
Retailer 9
-
£282 GBP
View
Price last confirmed 12 days ago
B+
Retailer 10
-
£362 GBP
View
Retailer 11
-
£457 GBP
View
Price last confirmed 9 days ago
B
Retailer 12
-
£462 GBP
View
B
Retailer 13
-
£505 GBP
View
Most Expensive
B
MOH London
LG845669343 · Nov 4
£652 GBP
View
13 more retailers have this diamond
Prices start from £126 GBPSave up to £526 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
1.17ct Marquise
£126 GBP