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Marquise|Lab Grown|IGI

1.09ct E FL Marquise Lab Grown Diamond

EX • E/FL • IGI LG780662533

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG780662533

Diamond specifications and retailer prices

From £315 GBP
HK$3,300 HKD
As of October 30, 2026
Save £1,263 GBP (80%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £1,578 GBP at Rare Carat · As of October 28, 2026
View at Rare Carat

About this 1.09ct lab-grown marquise diamond

This 1.09ct 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 LG780662533 or 780662533. Listed at 14 retailers as of October 28, 2026, with prices from £315 to £1,578, a £1,263 spread on the same certified stone. Rare Carat lists it at £1,578. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.09
Carat
E
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG780662533
Dimensions10.56 × 5.41 × 3.35 mm
L/W Ratio1.95
Girdle conditionFaceted
Culet sizePointed
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
10.56 mm5.41 mm1.09 ctE / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG780662533
Side View
Table 59.0%Crown 34.2°Girdle: MED-STKPavilion 40.1°Culet: NoneDepth 61.9%

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: £1,578 GBP|Low: £315 GBP|High: £1,935 GBP|Avg: £804 GBP|-1.6%
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
Retailer 14
October 31, 2026
Retailer 11£315 GBP
Retailer 4£322 GBP
Retailer 14£378 GBP
Retailer 8£381 GBP
Retailer 12£383 GBP
Retailer 10£392 GBP
Retailer 2£434 GBP
Retailer 13£501 GBP
Retailer 5£736 GBP
Retailer 3£861 GBP
Retailer 9£919 GBP
Retailer 6£1,160 GBP
Retailer 7£1,194 GBP
Rare Carat£1,578 GBP

43 data points across 14 retailers

14 retailers£315 GBP to £1,578 GBP

A
Cheapest Retailer
-
£315 GBP
HK$3,300 HKD
A
Retailer 2
-
£322 GBP
$432 USD
View
A
Retailer 3
-
£378 GBP
$506 USD
View
A
Retailer 4
-
£381 GBP
€486 EUR
View
A
Retailer 5
-
£383 GBP
$513 USD
View
A
Retailer 6
-
£392 GBP
ZAR 8,488 ZAR
View
A
Retailer 7
-
£434 GBP
View
Retailer 8
-
£501 GBP
$671 USD
View
Price last confirmed 7 days ago
B+
Retailer 9
-
£736 GBP
A$1,518 AUD
View
B+
Retailer 10
-
£861 GBP
$1,154 USD
View
B+
Retailer 11
-
£919 GBP
View
B
Retailer 12
-
£1,160 GBP
$1,554 USD
View
B
Retailer 13
-
£1,194 GBP
$1,600 USD
View
Most Expensive
B
Rare Carat
52630 · Oct 28
£1,578 GBP
$2,115 USD
View
13 more retailers have this diamond
Prices start from £315 GBPSave up to £1,263 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
1.09ct Marquise
£315 GBP