Marquise|Lab Grown|IGI

0.91ct D IF Marquise Lab Grown Diamond

ID • D/IF • IGI LG794668309

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG794668309

Diamond specifications and retailer prices

From £154 GBP
$207 USD
As of October 30, 2026
Save £763 GBP (83%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £1,261 GBP at Brilliant Earth · As of September 28, 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 D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG794668309 or 794668309. Listed at 20 retailers as of October 30, 2026, with a 494% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG794668309
Dimensions10.11 × 5.04 × 3.18 mm
L/W Ratio2.01
Girdle conditionFaceted
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
10.11 mm5.04 mm0.91 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG794668309
Side View
Table 57.0%Crown 34.4°Girdle: STK-THKPavilion 40.5°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: £918 GBP|Low: £154 GBP|High: £1,254 GBP|Avg: £453 GBP|-26.8%
Brilliant Earth
Retailer 2
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Retailer 19
November 1, 2026
Retailer 6£154 GBP
Retailer 9£172 GBP
Retailer 17£179 GBP
Retailer 4£192 GBP
Retailer 11£192 GBP
Retailer 12£320 GBP
Retailer 8£331 GBP
Retailer 13£346 GBP
Retailer 2£353 GBP
Retailer 3£364 GBP
Retailer 5£431 GBP
Retailer 14£478 GBP
Retailer 16£493 GBP
Retailer 10£535 GBP
Retailer 19£616 GBP
Retailer 7£655 GBP
Retailer 18£677 GBP
Retailer 15£772 GBP
Brilliant Earth£918 GBP

43 data points across 19 retailers

20 retailers£154 GBP to £918 GBP

A+
Cheapest Retailer
-
£154 GBP
$207 USD
A
Retailer 2
-
£172 GBP
$231 USD
View
Final sale: no returns
A
Retailer 3
-
£179 GBP
$240 USD
View
A
Retailer 4
-
£192 GBP
$257 USD
View
A
Retailer 5
-
£192 GBP
$257 USD
View
A
Retailer 6
-
£320 GBP
€408 EUR
View
A
Retailer 7
-
£331 GBP
$444 USD
View
A
Retailer 8
-
£346 GBP
ZAR 7,494 ZAR
View
A
Retailer 9
-
£353 GBP
View
A
Retailer 10
-
£364 GBP
$488 USD
View
A
Retailer 11
-
£431 GBP
$577 USD
View
A
Retailer 12
-
£478 GBP
A$986 AUD
View
A
Retailer 13
-
£493 GBP
$661 USD
View
A
Retailer 14
-
£535 GBP
SGD 969 SGD
View
B+
Retailer 15
-
£616 GBP
$825 USD
View
B+
Retailer 16
-
£655 GBP
$878 USD
View
B+
Retailer 17
-
£677 GBP
$907 USD
View
Retailer 18
-
£772 GBP
View
Price last confirmed 13 days ago
B+
Retailer 19
-
£918 GBP
$1,230 USD
View
Most Expensive
Brilliant Earth
20085708A · Sep 28
£1,261 GBP
$1,690 USD
View
Price last confirmed 34 days ago
19 more retailers have this diamond
Prices start from £154 GBPSave up to £763 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
£154 GBP