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Marquise|Lab Grown|IGI

1.22ct E FL Marquise Lab Grown Diamond

ID • E/FL • IGI LG784645164

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG784645164

Diamond specifications and retailer prices

From £154 GBP
$206 USD
As of October 30, 2026
Save £1,567 GBP (91%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £1,720 GBP at Rare Carat · As of October 28, 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 E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG784645164 or 784645164. Listed at 14 retailers as of October 28, 2026, with prices from £154 to £1,720, a £1,567 spread on the same certified stone. Rare Carat lists it at £1,720. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.22
Carat
E
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle37.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG784645164
Dimensions11.58 × 5.68 × 3.27 mm
L/W Ratio2.04
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
11.58 mm5.68 mm1.22 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG784645164
Side View
Table 57.0%Crown 35.6°Girdle: MediumPavilion 37.1°Culet: NoneDepth 57.6%

Caratlytics Score

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A+
Exceptional
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £1,720 GBP|Low: £154 GBP|High: £2,029 GBP|Avg: £931 GBP|+6.2%
Rare Carat
Retailer 2
Retailer 3
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Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
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Retailer 18
October 30, 2026
Retailer 14£154 GBP
Retailer 4£178 GBP
Retailer 6£246 GBP
Retailer 15£306 GBP
Retailer 18£330 GBP
Retailer 11£368 GBP
Retailer 7£381 GBP
Retailer 5£469 GBP
Retailer 13£542 GBP
Retailer 16£615 GBP
Retailer 3£676 GBP
Retailer 12£847 GBP
Retailer 9£872 GBP
Retailer 17£1,478 GBP
Retailer 2£1,620 GBP
Rare Carat£1,720 GBP
Retailer 10£1,768 GBP
Retailer 8£2,029 GBP

26 data points across 18 retailers

14 retailers£154 GBP to £1,720 GBP

A+
Cheapest Retailer
-
£154 GBP
$206 USD
A
Retailer 2
-
£178 GBP
$239 USD
View
A
Retailer 3
-
£246 GBP
$330 USD
View
Final sale: no returns
A
Retailer 4
-
£306 GBP
$410 USD
View
A
Retailer 5
-
£330 GBP
$442 USD
View
A
Retailer 6
-
£368 GBP
€470 EUR
View
A
Retailer 7
-
£469 GBP
$629 USD
View
A
Retailer 8
-
£542 GBP
A$1,118 AUD
View
B+
Retailer 9
-
£615 GBP
$824 USD
View
B+
Retailer 10
-
£676 GBP
$906 USD
View
B+
Retailer 11
-
£847 GBP
View
B
Retailer 12
-
£1,478 GBP
$1,980 USD
View
B
Retailer 13
-
£1,620 GBP
$2,170 USD
View
Most Expensive
B
Rare Carat
B85-20B · Oct 28
£1,720 GBP
$2,305 USD
View
13 more retailers have this diamond
Prices start from £154 GBPSave up to £1,567 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
£154 GBP