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Marquise|Lab Grown|IGI

1.24ct D IF Marquise Lab Grown Diamond

EX • D/IF • IGI LG821643621

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG821643621

Diamond specifications and retailer prices

From £182 GBP
As of November 4, 2026
Save £1,566 GBP (90%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £1,748 GBP at Do Amore Diamonds · As of November 4, 2026
View at Do Amore Diamonds

About this 1.24ct lab-grown marquise diamond

This 1.24ct 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 LG821643621 or 821643621. Listed at 21 retailers as of November 4, 2026, with prices from £182 to £1,748, a £1,566 spread on the same certified stone. Do Amore Diamonds lists it at £1,748. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.24
Carat
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.3°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG821643621
Dimensions11.59 × 5.63 × 3.44 mm
L/W Ratio2.06
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
11.59 mm5.63 mm1.24 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG821643621
Side View
Table 60.0%Crown 33.3°Girdle: MED-STKPavilion 40°Culet: NoneDepth 61.1%

Caratlytics Score

How it works →
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: £1,748 GBP|Low: £182 GBP|High: £1,748 GBP|Avg: £686 GBP
Do Amore Diamonds
Retailer 2
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November 5, 2026
Retailer 21£182 GBP
Retailer 5£203 GBP
Retailer 20£212 GBP
Retailer 3£226 GBP
Retailer 15£256 GBP
Retailer 10£380 GBP
Retailer 18£430 GBP
Retailer 2£434 GBP
Retailer 8£464 GBP
Retailer 14£547 GBP
Retailer 16£612 GBP
Retailer 17£634 GBP
Retailer 4£802 GBP
Retailer 9£926 GBP
Retailer 6£952 GBP
Retailer 7£970 GBP
Retailer 13£997 GBP
Retailer 12£1,096 GBP
Retailer 11£1,308 GBP
Retailer 19£1,348 GBP
Do Amore Diamonds£1,748 GBP

37 data points across 21 retailers

21 retailers£182 GBP to £1,748 GBP

A
Cheapest Retailer
-
£182 GBP
A
Retailer 2
-
£203 GBP
View
Final sale: no returns
A
Retailer 3
-
£212 GBP
View
A
Retailer 4
-
£226 GBP
View
A
Retailer 5
-
£256 GBP
View
A
Retailer 6
-
£380 GBP
View
A
Retailer 7
-
£430 GBP
View
A
Retailer 8
-
£434 GBP
View
A
Retailer 9
-
£464 GBP
View
A
Retailer 10
-
£547 GBP
View
B+
Retailer 11
-
£612 GBP
View
B+
Retailer 12
-
£634 GBP
View
B+
Retailer 13
-
£802 GBP
View
B+
Retailer 14
-
£926 GBP
View
B+
Retailer 15
-
£952 GBP
View
B+
Retailer 16
-
£970 GBP
View
B+
Retailer 17
-
£997 GBP
View
Retailer 18
-
£1,096 GBP
View
Price last confirmed 29 days ago
Retailer 19
-
£1,308 GBP
View
Price last confirmed 28 days ago
B
Retailer 20
-
£1,348 GBP
View
Most Expensive
B
Do Amore Diamonds
27-B42EA4907 · Nov 4
£1,748 GBP
$2,360 USD
View
20 more retailers have this diamond
Prices start from £182 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
1.24ct Marquise
£182 GBP