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Marquise|Lab Grown|IGI

1.03ct D FL Marquise Lab Grown Diamond

ID • D/FL • IGI LG788621212

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG788621212

Diamond specifications and retailer prices

From £381 GBP
As of November 3, 2026
Save £1,663 GBP (81%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £2,044 GBP at Brilliant Earth · As of November 3, 2026
View at Brilliant Earth

About this 1.03ct lab-grown marquise diamond

This 1.03ct 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 LG788621212 or 788621212. Listed at 22 retailers as of November 3, 2026, with prices from £381 to £2,044, a £1,663 spread on the same certified stone. Brilliant Earth lists it at £2,044. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.03
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.2°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG788621212
Dimensions10.12 × 5.41 × 3.33 mm
L/W Ratio1.87
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
10.12 mm5.41 mm1.03 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG788621212
Side View
Table 63.0%Crown 37.2°Girdle: THN-MEDPavilion 40.6°Culet: NoneDepth 61.6%

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 3
Current: £2,044 GBP|Low: £327 GBP|High: £2,044 GBP|Avg: £837 GBP
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
November 4, 2026
Retailer 15£341 GBP
Retailer 7£381 GBP
Retailer 4£423 GBP
Retailer 13£423 GBP
Retailer 9£530 GBP
Retailer 14£569 GBP
Retailer 6£584 GBP
Retailer 8£693 GBP
Retailer 10£730 GBP
Retailer 12£1,104 GBP
Retailer 5£1,119 GBP
Retailer 2£1,137 GBP
Retailer 3£1,493 GBP
Retailer 11£1,554 GBP
Brilliant Earth£2,044 GBP

45 data points across 15 retailers

22 retailers£381 GBP to £2,044 GBP

Retailer 1
-
£341 GBP
Price last confirmed 27 days ago
A
Retailer 2
-
£381 GBP
View
Final sale: no returns
Retailer 3
-
£382 GBP
View
Price last confirmed 20 days ago
Retailer 4
-
£423 GBP
View
Price last confirmed 19 days ago
Retailer 5
-
£423 GBP
View
Price last confirmed 32 days ago
B+
Retailer 6
-
£487 GBP
View
B+
Retailer 7
-
£530 GBP
View
B+
Retailer 8
-
£569 GBP
View
B+
Retailer 9
-
£584 GBP
View
B+
Retailer 10
-
£693 GBP
View
B+
Retailer 11
-
£730 GBP
View
B
Retailer 12
-
£992 GBP
View
B+
Retailer 13
-
£1,104 GBP
View
B
Retailer 14
-
£1,119 GBP
View
B
Retailer 15
-
£1,137 GBP
View
B
Retailer 16
-
£1,230 GBP
View
Retailer 17
-
£1,360 GBP
View
Price last confirmed 35 days ago
B
Retailer 18
-
£1,382 GBP
View
Retailer 19
-
£1,493 GBP
View
Price last confirmed 28 days ago
B
Retailer 20
-
£1,500 GBP
View
B
Retailer 21
-
£1,554 GBP
View
Most Expensive
B
Brilliant Earth
20045951A · Nov 3
£2,044 GBP
$2,760 USD
View
21 more retailers have this diamond
Prices start from £381 GBPSave up to £1,663 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
1.03ct Marquise
£381 GBP