Marquise|Lab Grown|IGI

1.05ct D SI1 Marquise Lab Grown Diamond

ID • D/SI1 • IGI LG836626536

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG836626536

Diamond specifications and retailer prices

From £152 GBP
As of November 6, 2026
Save £218 GBP (59%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £629 GBP at MOH London · As of October 21, 2026
View at MOH London

About this 1.05ct lab-grown marquise diamond

This 1.05ct lab-grown marquise sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG836626536 or 836626536. Listed at 14 retailers as of November 2, 2026, with a 144% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.05
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle32.7°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG836626536
Dimensions10.86 × 5.46 × 3.21 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
10.86 mm5.46 mm1.05 ctD / SI1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG836626536
Side View
Table 67.0%Crown 32.7°Girdle: THN-MEDPavilion 40.9°Culet: NoneDepth 58.8%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: £629 GBP|Low: £120 GBP|High: £641 GBP|Avg: £301 GBP|-0.7%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 12£120 GBP
Retailer 8£152 GBP
Retailer 5£160 GBP
Retailer 9£228 GBP
Retailer 6£230 GBP
Retailer 11£247 GBP
Retailer 4£260 GBP
Retailer 7£288 GBP
Retailer 2£347 GBP
Retailer 3£370 GBP
Retailer 10£416 GBP
MOH London£629 GBP

35 data points across 12 retailers

14 retailers£152 GBP to £370 GBP

Retailer 1
-
£108 GBP
Price last confirmed 20 days ago
Retailer 2
-
£126 GBP
View
Price last confirmed 22 days ago
Retailer 3
-
£134 GBP
View
Price last confirmed 38 days ago
A
Retailer 4
-
£152 GBP
View
Retailer 5
-
£228 GBP
View
Price last confirmed 10 days ago
Retailer 6
-
£230 GBP
View
Price last confirmed 10 days ago
Retailer 7
-
£247 GBP
View
Price last confirmed 12 days ago
Retailer 8
-
£260 GBP
View
Price last confirmed 12 days ago
Retailer 9
-
£288 GBP
View
Price last confirmed 11 days ago
B
Retailer 10
-
£347 GBP
View
B+
Retailer 11
-
£370 GBP
View
Retailer 12
-
£416 GBP
View
Price last confirmed 9 days ago
Retailer 13
-
£430 GBP
View
Price last confirmed 21 days ago
Most Expensive
MOH London
LG836626536 · Oct 21
£629 GBP
View
Price last confirmed 16 days ago
13 more retailers have this diamond
Prices start from £152 GBPSave up to £218 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
1.05ct Marquise
£152 GBP