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Marquise|Lab Grown|IGI

1.05ct D IF Marquise Lab Grown Diamond

ID • D/IF • IGI LG819697916

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG819697916

Diamond specifications and retailer prices

From £150 GBP
As of November 4, 2026
Save £924 GBP (86%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £1,074 GBP at Brilliant Earth · As of November 3, 2026
View at Brilliant Earth

About this 1.05ct lab-grown marquise diamond

This 1.05ct 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 LG819697916 or 819697916. Listed at 12 retailers as of November 3, 2026, with prices from £150 to £1,074, a £924 spread on the same certified stone. Brilliant Earth lists it at £1,074. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.05
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.4°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG819697916
Dimensions10.45 × 5.52 × 3.34 mm
L/W Ratio1.89
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
10.45 mm5.52 mm1.05 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG819697916
Side View
Table 57.0%Crown 31.4°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 60.5%

Caratlytics Score

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A+
Exceptional
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: £1,074 GBP|Low: £150 GBP|High: £1,948 GBP|Avg: £560 GBP|-44.9%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 4, 2026
Retailer 10£150 GBP
Retailer 9£173 GBP
Retailer 8£322 GBP
Retailer 6£361 GBP
Retailer 11£364 GBP
Retailer 4£453 GBP
Retailer 7£596 GBP
Retailer 2£599 GBP
Retailer 5£867 GBP
Retailer 3£956 GBP
Brilliant Earth£1,074 GBP

31 data points across 11 retailers

12 retailers£150 GBP to £1,074 GBP

A+
Cheapest Retailer
-
£150 GBP
A
Retailer 2
-
£173 GBP
View
A
Retailer 3
-
£322 GBP
View
A
Retailer 4
-
£361 GBP
View
Retailer 5
-
£364 GBP
View
Price last confirmed 11 days ago
A
Retailer 6
-
£453 GBP
View
B+
Retailer 7
-
£496 GBP
View
B+
Retailer 8
-
£596 GBP
View
B+
Retailer 9
-
£599 GBP
View
B
Retailer 10
-
£867 GBP
View
Retailer 11
-
£956 GBP
View
Price last confirmed 8 days ago
Most Expensive
B
Brilliant Earth
20983902A · Nov 3
£1,074 GBP
$1,450 USD
View
11 more retailers have this diamond
Prices start from £150 GBPSave up to £924 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+
1.05ct Marquise
£150 GBP