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Marquise|Lab Grown|IGI

1.05ct D IF Marquise Lab Grown Diamond

EX • D/IF • IGI LG791653600

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG791653600

Diamond specifications and retailer prices

From £174 GBP
As of November 5, 2026
Save £1,330 GBP (88%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: £1,889 GBP at Brilliant Earth · As of October 24, 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 LG791653600 or 791653600. Listed at 25 retailers as of November 4, 2026, with a 764% 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 angle33.5°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG791653600
Dimensions10.38 × 5.38 × 3.32 mm
L/W Ratio1.93
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
10.38 mm5.38 mm1.05 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG791653600
Side View
Table 60.0%Crown 33.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.7%

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 5
Current: £1,067 GBP|Low: £173 GBP|High: £1,504 GBP|Avg: £471 GBP
Brilliant Earth
Retailer 2
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November 5, 2026
Retailer 15£173 GBP
Retailer 7£174 GBP
Retailer 14£181 GBP
Retailer 5£194 GBP
Retailer 10£194 GBP
Retailer 13£219 GBP
Retailer 18£276 GBP
Retailer 6£293 GBP
Retailer 4£341 GBP
Retailer 17£369 GBP
Retailer 22£369 GBP
Retailer 2£399 GBP
Retailer 9£406 GBP
Retailer 21£521 GBP
Retailer 23£625 GBP
Retailer 8£687 GBP
Retailer 12£703 GBP
Retailer 16£726 GBP
Retailer 19£861 GBP
Retailer 11£910 GBP
Retailer 20£937 GBP
Brilliant Earth£1,067 GBP
Retailer 3£1,504 GBP

29 data points across 23 retailers

25 retailers£174 GBP to £1,504 GBP

Retailer 1
-
£173 GBP
Price last confirmed 15 days ago
A
Retailer 2
-
£174 GBP
View
Final sale: no returns
A
Retailer 3
-
£181 GBP
View
Retailer 4
-
£194 GBP
View
Price last confirmed 11 days ago
A
Retailer 5
-
£194 GBP
View
A
Retailer 6
-
£219 GBP
View
A
Retailer 7
-
£276 GBP
View
A
Retailer 8
-
£293 GBP
View
A
Retailer 9
-
£341 GBP
View
A
Retailer 10
-
£369 GBP
View
A
Retailer 11
-
£369 GBP
View
A
Retailer 12
-
£399 GBP
View
Retailer 13
-
£406 GBP
View
Price last confirmed 11 days ago
Retailer 14
-
£521 GBP
View
Price last confirmed 9 days ago
B+
Retailer 15
-
£625 GBP
View
B+
Retailer 16
-
£687 GBP
View
B+
Retailer 17
-
£703 GBP
View
B+
Retailer 18
-
£726 GBP
View
Retailer 19
-
£861 GBP
View
Price last confirmed 7 days ago
B+
Retailer 20
-
£910 GBP
View
Retailer 21
-
£937 GBP
View
Price last confirmed 8 days ago
B+
Retailer 22
-
£1,067 GBP
View
Retailer 23
-
£1,458 GBP
View
Price last confirmed 9 days ago
B
Retailer 24
-
£1,504 GBP
View
Most Expensive
Brilliant Earth
18897939A · Oct 24
£1,889 GBP
$2,550 USD
View
Price last confirmed 11 days ago
24 more retailers have this diamond
Prices start from £174 GBPSave up to £1,330 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
£174 GBP