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Marquise|Lab Grown|IGI

1.01ct E FL Marquise Lab Grown Diamond

ID • E/FL • IGI LG818663222

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG818663222

Diamond specifications and retailer prices

From £192 GBP
$256 USD
As of October 28, 2026
Save £1,291 GBP (87%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £1,483 GBP at Rare Carat · As of October 28, 2026
View at Rare Carat

About this 1.01ct lab-grown marquise diamond

This 1.01ct 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 LG818663222 or 818663222. Listed at 19 retailers as of October 28, 2026, with prices from £192 to £1,483, a £1,291 spread on the same certified stone. Rare Carat lists it at £1,483. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.01
Carat
E
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.6°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818663222
Dimensions10.24 × 5.20 × 3.30 mm
L/W Ratio1.97
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
10.24 mm5.20 mm1.01 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818663222
Side View
Table 60.0%Crown 33.6°Girdle: MED-STKPavilion 40.8°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: Oct 28
Current: £1,483 GBP|Low: £173 GBP|High: £1,491 GBP|Avg: £630 GBP|-0.5%
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 29, 2026
Retailer 10£192 GBP
Retailer 6£300 GBP
Retailer 8£367 GBP
Retailer 2£401 GBP
Retailer 4£424 GBP
Retailer 9£430 GBP
Retailer 13£430 GBP
Retailer 5£585 GBP
Retailer 12£726 GBP
Retailer 3£806 GBP
Retailer 11£856 GBP
Retailer 7£967 GBP
Rare Carat£1,483 GBP

34 data points across 13 retailers

19 retailers£192 GBP to £1,483 GBP

A
Cheapest Retailer
-
£192 GBP
$256 USD
Final sale: no returns
Retailer 2
-
£212 GBP
$282 USD
View
Price last confirmed 21 days ago
Retailer 3
-
£253 GBP
$337 USD
View
Price last confirmed 31 days ago
Retailer 4
-
£262 GBP
$349 USD
View
Price last confirmed 26 days ago
Retailer 5
-
£262 GBP
$349 USD
View
Price last confirmed 17 days ago
Retailer 6
-
£267 GBP
$356 USD
View
Price last confirmed 34 days ago
A
Retailer 7
-
£300 GBP
$400 USD
View
A
Retailer 8
-
£367 GBP
ZAR 7,892 ZAR
View
A
Retailer 9
-
£401 GBP
View
A
Retailer 10
-
£424 GBP
$565 USD
View
A
Retailer 11
-
£430 GBP
$572 USD
View
A
Retailer 12
-
£430 GBP
€545 EUR
View
B+
Retailer 13
-
£585 GBP
$779 USD
View
B+
Retailer 14
-
£726 GBP
$967 USD
View
B
Retailer 15
-
£806 GBP
$1,074 USD
View
Retailer 16
-
£843 GBP
$1,123 USD
View
Price last confirmed 25 days ago
B+
Retailer 17
-
£856 GBP
View
B+
Retailer 18
-
£967 GBP
$1,287 USD
View
Most Expensive
B
Rare Carat
C479-39A · Oct 28
£1,483 GBP
$1,975 USD
View
18 more retailers have this diamond
Prices start from £192 GBPSave up to £1,291 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
1.01ct Marquise
£192 GBP