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Marquise|Lab Grown|IGI

1.05ct D IF Marquise Lab Grown Diamond

EX • D/IF • IGI LG811619672

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG811619672

Diamond specifications and retailer prices

From £190 GBP
As of November 4, 2026
Save £900 GBP (83%) vs most expensive(unlock to see where)
26 retailers carry this diamond
Most expensive: £1,889 GBP at Brilliant Earth · As of October 16, 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 LG811619672 or 811619672. Listed at 26 retailers as of October 30, 2026, with a 473% 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

1.05
Carat
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.8°
Pavilion angle41.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG811619672
Dimensions10.33 × 5.38 × 3.33 mm
L/W Ratio1.92
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
10.33 mm5.38 mm1.05 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG811619672
Side View
Table 62.0%Crown 32.8°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 61.9%

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 4
Current: £1,889 GBP|Low: £183 GBP|High: £1,889 GBP|Avg: £601 GBP
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
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Retailer 11
Retailer 12
Retailer 13
Retailer 14
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Retailer 17
Retailer 18
November 5, 2026
Retailer 7£190 GBP
Retailer 4£221 GBP
Retailer 6£236 GBP
Retailer 9£236 GBP
Retailer 11£242 GBP
Retailer 10£319 GBP
Retailer 16£356 GBP
Retailer 14£407 GBP
Retailer 3£429 GBP
Retailer 2£443 GBP
Retailer 17£451 GBP
Retailer 13£579 GBP
Retailer 12£725 GBP
Retailer 8£759 GBP
Retailer 15£946 GBP
Retailer 5£948 GBP
Retailer 18£1,090 GBP
Brilliant Earth£1,889 GBP

36 data points across 18 retailers

26 retailers£190 GBP to £1,090 GBP

A
Cheapest Retailer
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£190 GBP
A
Retailer 2
-
£213 GBP
View
Final sale: no returns
A
Retailer 3
-
£221 GBP
View
Retailer 4
-
£236 GBP
View
Price last confirmed 11 days ago
A
Retailer 5
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£236 GBP
View
A
Retailer 6
-
£242 GBP
View
A
Retailer 7
-
£319 GBP
View
A
Retailer 8
-
£356 GBP
View
A
Retailer 9
-
£407 GBP
View
A
Retailer 10
-
£417 GBP
View
A
Retailer 11
-
£429 GBP
View
A
Retailer 12
-
£443 GBP
View
A
Retailer 13
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£449 GBP
View
A
Retailer 14
-
£451 GBP
View
B+
Retailer 15
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£579 GBP
View
B+
Retailer 16
-
£603 GBP
View
B+
Retailer 17
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£635 GBP
View
B+
Retailer 18
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£725 GBP
View
B+
Retailer 19
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£759 GBP
View
B+
Retailer 20
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£797 GBP
View
B
Retailer 21
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£925 GBP
View
B+
Retailer 22
-
£946 GBP
View
Retailer 23
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£948 GBP
View
Price last confirmed 8 days ago
B
Retailer 24
-
£1,019 GBP
View
B
Retailer 25
-
£1,090 GBP
View
Most Expensive
Brilliant Earth
20879627A · Oct 16
£1,889 GBP
$2,550 USD
View
Price last confirmed 19 days ago
25 more retailers have this diamond
Prices start from £190 GBPSave up to £900 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
£190 GBP