CaratHunter
Plans
Marquise|Lab Grown|IGI

1.05ct E FL Marquise Lab Grown Diamond

EX • E/FL • IGI LG811619626

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG811619626

Diamond specifications and retailer prices

From £307 GBP
$409 USD
As of October 27, 2026
Save £1,367 GBP (82%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £1,675 GBP at Brilliant Earth · As of October 28, 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 E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG811619626 or 811619626. Listed at 21 retailers as of October 27, 2026, with prices from £307 to £1,675, a £1,367 spread on the same certified stone. Brilliant Earth lists it at £1,675. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.05
Carat
E
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.4°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG811619626
Dimensions10.92 × 5.27 × 3.25 mm
L/W Ratio2.07
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
10.92 mm5.27 mm1.05 ctE / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG811619626
Side View
Table 60.0%Crown 32.4°Girdle: THN-STKPavilion 40.5°Culet: NoneDepth 61.7%

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 27
Current: £1,675 GBP|Low: £294 GBP|High: £1,675 GBP|Avg: £699 GBP
Brilliant Earth
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
Retailer 16
Retailer 17
October 29, 2026
Retailer 3£307 GBP
Retailer 9£344 GBP
Retailer 15£344 GBP
Retailer 16£381 GBP
Retailer 17£381 GBP
Retailer 14£473 GBP
Retailer 6£511 GBP
Retailer 8£548 GBP
Retailer 10£604 GBP
Retailer 12£604 GBP
Retailer 2£624 GBP
Retailer 13£654 GBP
Retailer 5£914 GBP
Retailer 7£1,008 GBP
Retailer 4£1,224 GBP
Retailer 11£1,495 GBP
Brilliant Earth£1,675 GBP

42 data points across 17 retailers

21 retailers£307 GBP to £1,675 GBP

A
Cheapest Retailer
-
£307 GBP
$409 USD
A
Retailer 2
-
£344 GBP
$458 USD
View
Final sale: no returns
A
Retailer 3
-
£344 GBP
$458 USD
View
A
Retailer 4
-
£381 GBP
$507 USD
View
A
Retailer 5
-
£381 GBP
$507 USD
View
A
Retailer 6
-
£473 GBP
$630 USD
View
A
Retailer 7
-
£505 GBP
$672 USD
View
A
Retailer 8
-
£511 GBP
$680 USD
View
B+
Retailer 9
-
£548 GBP
$730 USD
View
B+
Retailer 10
-
£604 GBP
€766 EUR
View
B+
Retailer 11
-
£604 GBP
A$1,238 AUD
View
B+
Retailer 12
-
£624 GBP
View
B+
Retailer 13
-
£654 GBP
ZAR 14,073 ZAR
View
B
Retailer 14
-
£914 GBP
$1,217 USD
View
B
Retailer 15
-
£1,008 GBP
SGD 1,814 SGD
View
B
Retailer 16
-
£1,110 GBP
View
B
Retailer 17
-
£1,224 GBP
$1,630 USD
View
B
Retailer 18
-
£1,250 GBP
$1,664 USD
View
B
Retailer 19
-
£1,397 GBP
$1,860 USD
View
B
Retailer 20
-
£1,495 GBP
View
Most Expensive
B
Brilliant Earth
20986651A · Oct 28
£1,675 GBP
$2,230 USD
View
20 more retailers have this diamond
Prices start from £307 GBPSave up to £1,367 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
£307 GBP