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Marquise|Lab Grown|IGI

0.91ct E IF Marquise Lab Grown Diamond

ID • E/IF • IGI LG665423524

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG665423524

Diamond specifications and retailer prices

From £169 GBP
$227 USD
As of October 30, 2026
Save £980 GBP (85%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £1,149 GBP at Brilliant Earth · As of October 25, 2026
View at Brilliant Earth

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 IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG665423524 or 665423524. Listed at 22 retailers as of October 25, 2026, with prices from £169 to £1,149, a £980 spread on the same certified stone. Brilliant Earth lists it at £1,149. Flawless clarity in sub-one-carat stones is rarely visible to the naked eye over VS1, so you are paying a meaningful premium for grade rather than appearance.

The 4Cs

0.91
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.3°
Pavilion angle41.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG665423524
Dimensions9.89 × 5.15 × 3.25 mm
L/W Ratio1.92
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
9.89 mm5.15 mm0.91 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG665423524
Side View
Table 59.0%Crown 33.3°Girdle: MediumPavilion 41.4°Culet: NoneDepth 63.1%

Caratlytics Score

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A+
Exceptional
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 30
Current: £1,149 GBP|Low: £169 GBP|High: £1,149 GBP|Avg: £488 GBP
Brilliant Earth
Retailer 2
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October 30, 2026
Retailer 2£169 GBP
Retailer 11£189 GBP
Retailer 20£197 GBP
Retailer 6£210 GBP
Retailer 17£210 GBP
Retailer 12£239 GBP
Retailer 13£258 GBP
Retailer 5£284 GBP
Retailer 3£350 GBP
Retailer 22£380 GBP
Retailer 8£381 GBP
Retailer 16£393 GBP
Retailer 9£427 GBP
Retailer 10£524 GBP
Retailer 14£568 GBP
Retailer 19£676 GBP
Retailer 4£678 GBP
Retailer 15£715 GBP
Retailer 21£810 GBP
Retailer 18£847 GBP
Retailer 7£956 GBP
Brilliant Earth£1,149 GBP

31 data points across 22 retailers

22 retailers£169 GBP to £1,149 GBP

A+
Cheapest Retailer
-
£169 GBP
$227 USD
A
Retailer 2
-
£189 GBP
$253 USD
View
Final sale: no returns
A
Retailer 3
-
£197 GBP
$264 USD
View
A
Retailer 4
-
£210 GBP
$282 USD
View
A
Retailer 5
-
£210 GBP
$282 USD
View
A
Retailer 6
-
£239 GBP
HK$2,500 HKD
View
A
Retailer 7
-
£258 GBP
View
A
Retailer 8
-
£284 GBP
$380 USD
View
A
Retailer 9
-
£350 GBP
€447 EUR
View
A
Retailer 10
-
£380 GBP
ZAR 8,232 ZAR
View
A
Retailer 11
-
£381 GBP
$510 USD
View
A
Retailer 12
-
£393 GBP
View
A
Retailer 13
-
£427 GBP
$572 USD
View
A
Retailer 14
-
£524 GBP
A$1,080 AUD
View
B+
Retailer 15
-
£568 GBP
SGD 1,028 SGD
View
B+
Retailer 16
-
£676 GBP
$906 USD
View
B+
Retailer 17
-
£678 GBP
$909 USD
View
B+
Retailer 18
-
£715 GBP
$958 USD
View
B+
Retailer 19
-
£810 GBP
$1,085 USD
View
B+
Retailer 20
-
£847 GBP
View
B
Retailer 21
-
£956 GBP
$1,280 USD
View
Most Expensive
B
Brilliant Earth
18876069A · Oct 25
£1,149 GBP
$1,540 USD
View
21 more retailers have this diamond
Prices start from £169 GBPSave up to £980 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
£169 GBP