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Marquise|Lab Grown|IGI

0.91ct E SI1 Marquise Lab Grown Diamond

ID • E/SI1 • IGI LG600350943

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG600350943

Diamond specifications and retailer prices

From £112 GBP
$149 USD
As of October 28, 2026
Save £273 GBP (71%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £385 GBP at NZ Jewellers · As of October 28, 2026
View at NZ Jewellers

About this 0.91ct lab-grown marquise diamond

This 0.91ct lab-grown marquise sits in the just-under-one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG600350943 or 600350943. Listed at 9 retailers as of October 28, 2026, with prices from £112 to £385, a £273 spread on the same certified stone. NZ Jewellers lists it at £385. 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
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG600350943
Dimensions9.89 × 5.08 × 3.22 mm
L/W Ratio1.95
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
9.89 mm5.08 mm0.91 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG600350943
Side View
Table 58.0%Crown 35.6°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 63.4%

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: Oct 28
Current: £385 GBP|Low: £112 GBP|High: £481 GBP|Avg: £275 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
October 29, 2026
Retailer 11£112 GBP
Retailer 8£120 GBP
Retailer 13£135 GBP
Retailer 9£159 GBP
Retailer 2£200 GBP
Retailer 12£228 GBP
Retailer 15£243 GBP
Retailer 14£247 GBP
Retailer 10£302 GBP
Retailer 5£307 GBP
Retailer 7£331 GBP
Retailer 6£365 GBP
NZ Jewellers£385 GBP
Retailer 4£445 GBP
Retailer 3£481 GBP

2 data points across 15 retailers

9 retailers£112 GBP to £385 GBP

A
Cheapest Retailer
-
£112 GBP
$149 USD
Retailer 2
-
£120 GBP
$160 USD
View
A
Retailer 3
-
£135 GBP
HK$1,400 HKD
View
A
Retailer 4
-
£159 GBP
View
A
Retailer 5
-
£200 GBP
View
A
Retailer 6
-
£228 GBP
$304 USD
View
A
Retailer 7
-
£247 GBP
View
B+
Retailer 8
-
£302 GBP
$402 USD
View
Most Expensive
B+
NZ Jewellers
3b9c7151-7e79-431f-ba92-7defdcb28509 · Oct 28
£385 GBP
$513 USD
View
8 more retailers have this diamond
Prices start from £112 GBPSave up to £273 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
£112 GBP