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Marquise|Lab Grown|IGI

0.91ct D SI1 Marquise Lab Grown Diamond

ID • D/SI1 • IGI LG783655428

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG783655428

Diamond specifications and retailer prices

From £94 GBP
$126 USD
As of October 30, 2026
Save £877 GBP (90%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £971 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 0.91ct lab-grown marquise diamond

This 0.91ct lab-grown marquise sits in the just-under-one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG783655428 or 783655428. Listed at 17 retailers as of October 30, 2026, with prices from £94 to £971, a £877 spread on the same certified stone. MOH London lists it at £971. 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

0.91
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle37.1°
Pavilion angle38.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG783655428
Dimensions9.62 × 5.08 × 3.14 mm
L/W Ratio1.89
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.62 mm5.08 mm0.91 ctD / SI1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG783655428
Side View
Table 61.0%Crown 37.1°Girdle: STK-THKPavilion 38.9°Culet: NoneDepth 61.8%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: £971 GBP|Low: £94 GBP|High: £1,026 GBP|Avg: £290 GBP|-4.2%
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
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Retailer 16
November 1, 2026
Retailer 13£94 GBP
Retailer 5£104 GBP
Retailer 7£109 GBP
Retailer 3£124 GBP
Retailer 6£124 GBP
Retailer 4£158 GBP
Retailer 2£193 GBP
Retailer 12£193 GBP
Retailer 11£211 GBP
Retailer 10£239 GBP
Retailer 15£354 GBP
Retailer 14£374 GBP
Retailer 16£395 GBP
Retailer 8£416 GBP
Retailer 9£448 GBP
MOH London£971 GBP

42 data points across 16 retailers

17 retailers£94 GBP to £971 GBP

A
Cheapest Retailer
-
£94 GBP
$126 USD
A
Retailer 2
-
£104 GBP
$140 USD
View
Final sale: no returns
A
Retailer 3
-
£109 GBP
$146 USD
View
Retailer 4
-
£124 GBP
$166 USD
View
Price last confirmed 7 days ago
A
Retailer 5
-
£124 GBP
$166 USD
View
B+
Retailer 6
-
£158 GBP
$212 USD
View
A
Retailer 7
-
£193 GBP
View
A
Retailer 8
-
£193 GBP
$259 USD
View
A
Retailer 9
-
£211 GBP
€269 EUR
View
B+
Retailer 10
-
£239 GBP
View
B+
Retailer 11
-
£354 GBP
$474 USD
View
Retailer 12
-
£359 GBP
$481 USD
View
Price last confirmed 76 days ago
B
Retailer 13
-
£374 GBP
$501 USD
View
B
Retailer 14
-
£395 GBP
$529 USD
View
B
Retailer 15
-
£416 GBP
$557 USD
View
B
Retailer 16
-
£448 GBP
$600 USD
View
Most Expensive
B
MOH London
LG783655428 · Nov 1
£971 GBP
View
16 more retailers have this diamond
Prices start from £94 GBPSave up to £877 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
0.91ct Marquise
£94 GBP