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Marquise|Lab Grown|IGI

1.25ct E FL Marquise Lab Grown Diamond

ID • E/FL • IGI LG818677645

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG818677645

Diamond specifications and retailer prices

From £473 GBP
$634 USD
As of October 31, 2026
Save £1,817 GBP (79%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £2,290 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.25ct lab-grown marquise diamond

This 1.25ct lab-grown marquise sits in the one-and-a-quarter to one-and-a-half carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG818677645 or 818677645. Listed at 21 retailers as of October 29, 2026, with prices from £473 to £2,290, a £1,817 spread on the same certified stone. MOH London lists it at £2,290. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.25
Carat
E
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.3°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818677645
Dimensions11.47 × 5.65 × 3.35 mm
L/W Ratio2.03
Girdle conditionFaceted
Culet sizeNone
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
11.47 mm5.65 mm1.25 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818677645
Side View
Table 63.0%Crown 33.3°Girdle: MED-STKPavilion 40°Culet: NoneDepth 59.3%

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 31
Current: £2,290 GBP|Low: £401 GBP|High: £2,290 GBP|Avg: £1,072 GBP|+2.5%
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 31, 2026
Retailer 7£401 GBP
Retailer 14£473 GBP
Retailer 4£515 GBP
Retailer 10£605 GBP
Retailer 13£702 GBP
Retailer 11£805 GBP
Retailer 12£808 GBP
Retailer 2£819 GBP
Retailer 9£902 GBP
Retailer 8£1,111 GBP
Retailer 15£1,380 GBP
Retailer 5£1,501 GBP
Retailer 3£1,700 GBP
Retailer 6£1,978 GBP
MOH London£2,290 GBP

42 data points across 15 retailers

21 retailers£473 GBP to £2,290 GBP

Retailer 1
-
£401 GBP
$537 USD
Price last confirmed 29 days ago
Retailer 2
-
£415 GBP
$556 USD
View
Price last confirmed 23 days ago
Retailer 3
-
£467 GBP
$626 USD
View
Price last confirmed 32 days ago
A
Retailer 4
-
£473 GBP
$634 USD
View
Final sale: no returns
Retailer 5
-
£510 GBP
$684 USD
View
Price last confirmed 32 days ago
Retailer 6
-
£515 GBP
$690 USD
View
Price last confirmed 14 days ago
Retailer 7
-
£515 GBP
$690 USD
View
Price last confirmed 28 days ago
Retailer 8
-
£515 GBP
$690 USD
View
Price last confirmed 18 days ago
A
Retailer 9
-
£605 GBP
$810 USD
View
A
Retailer 10
-
£702 GBP
$941 USD
View
B+
Retailer 11
-
£805 GBP
€1,027 EUR
View
B+
Retailer 12
-
£808 GBP
$1,082 USD
View
B+
Retailer 13
-
£819 GBP
View
B+
Retailer 14
-
£902 GBP
ZAR 19,516 ZAR
View
B+
Retailer 15
-
£1,111 GBP
$1,488 USD
View
Retailer 16
-
£1,361 GBP
$1,823 USD
View
Price last confirmed 30 days ago
B
Retailer 17
-
£1,380 GBP
$1,849 USD
View
Retailer 18
-
£1,501 GBP
View
Price last confirmed 16 days ago
B
Retailer 19
-
£1,700 GBP
$2,278 USD
View
B
Retailer 20
-
£1,978 GBP
$2,650 USD
View
Most Expensive
B
MOH London
LG818677645 · Oct 29
£2,290 GBP
View
20 more retailers have this diamond
Prices start from £473 GBPSave up to £1,817 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
1.25ct Marquise
£473 GBP