CaratHunter
Plans
Marquise|Lab Grown|IGI

1.03ct F FL Marquise Lab Grown Diamond

EX • F/FL

Diamond specifications and retailer prices

From £146 GBP
As of November 4, 2026
Save £812 GBP (85%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £958 GBP at Blue Nile · As of November 5, 2026
View at Blue Nile

About this 1.03ct lab-grown marquise diamond

This 1.03ct 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. Listed at 5 retailers as of November 4, 2026, with prices from £146 to £958, a £812 spread on the same certified stone. Blue Nile lists it at £958. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.03
Carat
F
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
Dimensions10.74 × 5.32 × 3.27 mm
L/W Ratio2.02
Top View
10.74 mm5.32 mm1.03 ctF / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI
Side View
Table 61.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 61.5%

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: £958 GBP|Low: £146 GBP|High: £1,461 GBP|Avg: £652 GBP
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 4, 2026
Retailer 2£146 GBP
Retailer 5£171 GBP
Retailer 4£360 GBP
Retailer 3£645 GBP
Blue Nile£958 GBP
Retailer 6£1,461 GBP

7 data points across 6 retailers

5 retailers£146 GBP to £958 GBP

A
Cheapest Retailer
-
£146 GBP
A
Retailer 2
-
£171 GBP
View
A
Retailer 3
-
£360 GBP
View
B+
Retailer 4
-
£645 GBP
View
Most Expensive
B
Blue Nile
30352922 · Nov 5
£958 GBP
$1,290 USD
View
4 more retailers have this diamond
Prices start from £146 GBPSave up to £812 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
£146 GBP