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Marquise|Lab Grown|IGI

1.22ct D IF Marquise Lab Grown Diamond

ID • D/IF • IGI LG750503093

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG750503093

Diamond specifications and retailer prices

From £330 GBP
As of November 4, 2026
Save £1,566 GBP (83%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: £1,896 GBP at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

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 IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG750503093 or 750503093. Listed at 24 retailers as of November 4, 2026, with prices from £330 to £1,896, a £1,566 spread on the same certified stone. Brilliant Earth lists it at £1,896. 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
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.3°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG750503093
Dimensions10.75 × 5.59 × 3.52 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
10.75 mm5.59 mm1.22 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG750503093
Side View
Table 58.0%Crown 34.3°Girdle: MED-STKPavilion 40°Culet: NoneDepth 63.0%

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: Nov 4
Current: £1,896 GBP|Low: £330 GBP|High: £2,055 GBP|Avg: £857 GBP|-4.5%
Brilliant Earth
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November 5, 2026
Retailer 17£330 GBP
Retailer 12£369 GBP
Retailer 8£370 GBP
Retailer 3£410 GBP
Retailer 6£410 GBP
Retailer 13£421 GBP
Retailer 7£445 GBP
Retailer 21£515 GBP
Retailer 22£574 GBP
Retailer 11£577 GBP
Retailer 5£628 GBP
Retailer 14£643 GBP
Retailer 2£670 GBP
Retailer 19£706 GBP
Retailer 20£998 GBP
Retailer 4£1,101 GBP
Retailer 23£1,137 GBP
Retailer 10£1,196 GBP
Retailer 16£1,301 GBP
Retailer 24£1,316 GBP
Retailer 9£1,340 GBP
Retailer 15£1,465 GBP
Retailer 18£1,504 GBP
Brilliant Earth£1,896 GBP

31 data points across 24 retailers

24 retailers£330 GBP to £1,896 GBP

A
Cheapest Retailer
-
£330 GBP
A
Retailer 2
-
£369 GBP
View
Final sale: no returns
A
Retailer 3
-
£370 GBP
View
Retailer 4
-
£410 GBP
View
Price last confirmed 11 days ago
A
Retailer 5
-
£410 GBP
View
A
Retailer 6
-
£421 GBP
View
A
Retailer 7
-
£445 GBP
View
A
Retailer 8
-
£515 GBP
View
Retailer 9
-
£574 GBP
View
Price last confirmed 9 days ago
B+
Retailer 10
-
£577 GBP
View
B+
Retailer 11
-
£628 GBP
View
B+
Retailer 12
-
£643 GBP
View
B+
Retailer 13
-
£670 GBP
View
B+
Retailer 14
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£706 GBP
View
B+
Retailer 15
-
£998 GBP
View
B
Retailer 16
-
£1,101 GBP
View
Retailer 17
-
£1,137 GBP
View
Price last confirmed 8 days ago
B
Retailer 18
-
£1,196 GBP
View
B
Retailer 19
-
£1,301 GBP
View
B
Retailer 20
-
£1,316 GBP
View
B
Retailer 21
-
£1,340 GBP
View
B
Retailer 22
-
£1,465 GBP
View
B
Retailer 23
-
£1,504 GBP
View
Most Expensive
B
Brilliant Earth
19056460A · Nov 4
£1,896 GBP
$2,560 USD
View
23 more retailers have this diamond
Prices start from £330 GBPSave up to £1,566 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
£330 GBP