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Marquise|Lab Grown|IGI

1.20ct D VVS1 Marquise Lab Grown Diamond

EX • D/VVS1 • IGI LG742534902

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG742534902

Diamond specifications and retailer prices

From £202 GBP
As of November 4, 2026
Save £787 GBP (80%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £1,104 GBP at Brilliant Earth · As of October 27, 2026
View at Brilliant Earth

About this 1.2ct lab-grown marquise diamond

This 1.2ct lab-grown marquise sits in the classic one-carat band, graded D colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG742534902 or 742534902. Listed at 23 retailers as of November 4, 2026, with a 389% 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

1.20
Carat
D
Colour
VVS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle39.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG742534902
Dimensions11.01 × 5.54 × 3.45 mm
L/W Ratio1.99
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
11.01 mm5.54 mm1.20 ctD / VVS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG742534902
Side View
Table 58.0%Crown 35.4°Girdle: STK-THKPavilion 39.9°Culet: NoneDepth 62.3%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 4
Current: £830 GBP|Low: £202 GBP|High: £1,311 GBP|Avg: £577 GBP|-36.7%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
November 4, 2026
Retailer 12£202 GBP
Retailer 6£227 GBP
Retailer 4£310 GBP
Retailer 5£383 GBP
Retailer 16£388 GBP
Retailer 17£401 GBP
Retailer 11£422 GBP
Retailer 8£436 GBP
Retailer 3£504 GBP
Retailer 14£550 GBP
Retailer 2£571 GBP
Retailer 9£659 GBP
Retailer 13£761 GBP
Retailer 7£815 GBP
Brilliant Earth£830 GBP
Retailer 15£901 GBP
Retailer 10£990 GBP

27 data points across 17 retailers

23 retailers£202 GBP to £990 GBP

A
Cheapest Retailer
-
£202 GBP
Final sale: no returns
Retailer 2
-
£205 GBP
View
Price last confirmed 33 days ago
Retailer 3
-
£227 GBP
View
Price last confirmed 10 days ago
Retailer 4
-
£247 GBP
View
Price last confirmed 36 days ago
Retailer 5
-
£264 GBP
View
Price last confirmed 32 days ago
Retailer 6
-
£273 GBP
View
Price last confirmed 40 days ago
A
Retailer 7
-
£310 GBP
View
Retailer 8
-
£383 GBP
View
Price last confirmed 8 days ago
A
Retailer 9
-
£388 GBP
View
A
Retailer 10
-
£401 GBP
View
A
Retailer 11
-
£422 GBP
View
B+
Retailer 12
-
£436 GBP
View
B+
Retailer 13
-
£504 GBP
View
B+
Retailer 14
-
£550 GBP
View
B+
Retailer 15
-
£571 GBP
View
B
Retailer 16
-
£761 GBP
View
B
Retailer 17
-
£815 GBP
View
B
Retailer 18
-
£830 GBP
View
Retailer 19
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£847 GBP
View
Price last confirmed 27 days ago
Retailer 20
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£851 GBP
View
Price last confirmed 35 days ago
B
Retailer 21
-
£901 GBP
View
B
Retailer 22
-
£990 GBP
View
Most Expensive
Brilliant Earth
16912620A · Oct 27
£1,104 GBP
$1,490 USD
View
Price last confirmed 8 days ago
22 more retailers have this diamond
Prices start from £202 GBPSave up to £787 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
1.20ct Marquise
£202 GBP