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Marquise|Lab Grown|IGI

1.05ct F FL Marquise Lab Grown Diamond

ID • F/FL • IGI LG825663128

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG825663128

Diamond specifications and retailer prices

From £449 GBP
As of November 4, 2026
Save £646 GBP (59%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £1,516 GBP at Rare Carat · As of October 28, 2026
View at Rare Carat

About this 1.05ct lab-grown marquise diamond

This 1.05ct lab-grown marquise sits in the classic one-carat band, graded F colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG825663128 or 825663128. Listed at 7 retailers as of November 4, 2026, with a 144% 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
F
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.1°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG825663128
Dimensions10.35 × 5.32 × 3.38 mm
L/W Ratio1.95
Girdle conditionFaceted
Culet sizeNone
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.35 mm5.32 mm1.05 ctF / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG825663128
Side View
Table 60.0%Crown 37.1°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 63.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: £1,516 GBP|Low: £368 GBP|High: £1,523 GBP|Avg: £734 GBP|-0.5%
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 5, 2026
Retailer 4£449 GBP
Retailer 5£453 GBP
Retailer 2£481 GBP
Retailer 6£483 GBP
Retailer 7£916 GBP
Retailer 3£1,095 GBP
Rare Carat£1,516 GBP

42 data points across 7 retailers

7 retailers£449 GBP to £1,095 GBP

A
Cheapest Retailer
-
£449 GBP
A
Retailer 2
-
£453 GBP
View
B+
Retailer 3
-
£481 GBP
View
B+
Retailer 4
-
£483 GBP
View
B
Retailer 5
-
£916 GBP
View
B
Retailer 6
-
£1,095 GBP
View
Most Expensive
Rare Carat
NM-207-4-B_l_825663128 · Oct 28
£1,516 GBP
$2,040 USD
View
Price last confirmed 8 days ago
6 more retailers have this diamond
Prices start from £449 GBPSave up to £646 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
£449 GBP