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Marquise|Lab Grown|IGI

1.03ct E IF Marquise Lab Grown Diamond

EX • E/IF • IGI LG600325275

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG600325275

Diamond specifications and retailer prices

From £278 GBP
$372 USD
As of October 30, 2026
Save £1,070 GBP (79%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £1,348 GBP at MOH London · As of October 25, 2026
View at MOH London

About this 1.03ct lab-grown marquise diamond

This 1.03ct lab-grown marquise sits in the classic one-carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG600325275 or 600325275. Listed at 18 retailers as of October 25, 2026, with prices from £278 to £1,348, a £1,070 spread on the same certified stone. MOH London lists it at £1,348. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.03
Carat
E
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.7°
Pavilion angle39.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG600325275
Dimensions11.26 × 5.33 × 3.19 mm
L/W Ratio2.11
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
11.26 mm5.33 mm1.03 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG600325275
Side View
Table 60.0%Crown 34.7°Girdle: MediumPavilion 39.8°Culet: NoneDepth 59.8%

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: Oct 30
Current: £1,348 GBP|Low: £266 GBP|High: £1,362 GBP|Avg: £596 GBP|-0.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
October 30, 2026
Retailer 14£278 GBP
Retailer 7£310 GBP
Retailer 13£322 GBP
Retailer 3£345 GBP
Retailer 10£345 GBP
Retailer 2£365 GBP
Retailer 15£478 GBP
Retailer 6£519 GBP
Retailer 5£550 GBP
Retailer 12£592 GBP
Retailer 8£622 GBP
Retailer 9£837 GBP
Retailer 4£1,011 GBP
Retailer 11£1,108 GBP
MOH London£1,348 GBP

40 data points across 15 retailers

18 retailers£278 GBP to £1,348 GBP

A
Cheapest Retailer
-
£278 GBP
$372 USD
A
Retailer 2
-
£310 GBP
$416 USD
View
Final sale: no returns
A
Retailer 3
-
£322 GBP
$432 USD
View
A
Retailer 4
-
£345 GBP
$462 USD
View
A
Retailer 5
-
£345 GBP
$462 USD
View
A
Retailer 6
-
£365 GBP
View
B+
Retailer 7
-
£478 GBP
$640 USD
View
B+
Retailer 8
-
£478 GBP
$640 USD
View
B+
Retailer 9
-
£519 GBP
$695 USD
View
B+
Retailer 10
-
£550 GBP
$737 USD
View
B+
Retailer 11
-
£592 GBP
ZAR 12,814 ZAR
View
B+
Retailer 12
-
£622 GBP
View
B+
Retailer 13
-
£837 GBP
A$1,725 AUD
View
B
Retailer 14
-
£1,011 GBP
$1,354 USD
View
B
Retailer 15
-
£1,108 GBP
$1,484 USD
View
B
Retailer 16
-
£1,137 GBP
$1,523 USD
View
B
Retailer 17
-
£1,301 GBP
$1,743 USD
View
Most Expensive
B
MOH London
LG600325275 · Oct 25
£1,348 GBP
View
17 more retailers have this diamond
Prices start from £278 GBPSave up to £1,070 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
£278 GBP