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Marquise|Lab Grown|IGI

1.22ct D FL Marquise Lab Grown Diamond

ID • D/FL • IGI LG836620386

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG836620386

Diamond specifications and retailer prices

From £178 GBP
As of November 4, 2026
Save £1,296 GBP (88%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £1,804 GBP at Rare Carat · As of October 14, 2026
View at Rare Carat

About this 1.22ct lab-grown marquise diamond

This 1.22ct lab-grown marquise sits in the classic one-carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG836620386 or 836620386. Listed at 20 retailers as of November 4, 2026, with a 729% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.22
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle42.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG836620386
Dimensions10.48 × 5.55 × 3.68 mm
L/W Ratio1.89
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
10.48 mm5.55 mm1.22 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG836620386
Side View
Table 58.0%Crown 35.4°Girdle: MED-STKPavilion 42.2°Culet: NoneDepth 66.3%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 4
Current: £1,793 GBP|Low: £178 GBP|High: £2,415 GBP|Avg: £725 GBP|-0.4%
Rare Carat
Retailer 2
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Retailer 11
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Retailer 19
November 5, 2026
Retailer 14£178 GBP
Retailer 13£199 GBP
Retailer 17£207 GBP
Retailer 4£221 GBP
Retailer 11£254 GBP
Retailer 9£370 GBP
Retailer 16£372 GBP
Retailer 2£414 GBP
Retailer 10£433 GBP
Retailer 7£438 GBP
Retailer 18£575 GBP
Retailer 15£710 GBP
Retailer 19£713 GBP
Retailer 3£748 GBP
Retailer 5£784 GBP
Retailer 6£860 GBP
Retailer 12£882 GBP
Retailer 8£1,474 GBP
Rare Carat£1,793 GBP

31 data points across 19 retailers

20 retailers£178 GBP to £1,474 GBP

A
Cheapest Retailer
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£178 GBP
A
Retailer 2
-
£199 GBP
View
Final sale: no returns
A
Retailer 3
-
£207 GBP
View
A
Retailer 4
-
£221 GBP
View
Retailer 5
-
£254 GBP
View
Price last confirmed 11 days ago
A
Retailer 6
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£370 GBP
View
A
Retailer 7
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£372 GBP
View
A
Retailer 8
-
£414 GBP
View
Retailer 9
-
£433 GBP
View
Price last confirmed 9 days ago
A
Retailer 10
-
£438 GBP
View
A
Retailer 11
-
£575 GBP
View
B+
Retailer 12
-
£710 GBP
View
B+
Retailer 13
-
£713 GBP
View
B+
Retailer 14
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£748 GBP
View
B+
Retailer 15
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£784 GBP
View
B+
Retailer 16
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£860 GBP
View
B+
Retailer 17
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£882 GBP
View
B
Retailer 18
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£1,474 GBP
View
Retailer 19
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£1,793 GBP
View
Price last confirmed 8 days ago
Most Expensive
Rare Carat
PE3866203JJ836 · Oct 14
£1,804 GBP
$2,435 USD
View
Price last confirmed 21 days ago
19 more retailers have this diamond
Prices start from £178 GBPSave up to £1,296 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
1.22ct Marquise
£178 GBP