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Marquise|Lab Grown|IGI

1.81ct E FL Marquise Lab Grown Diamond

ID • E/FL • IGI LG799671726

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG799671726

Diamond specifications and retailer prices

From £1,077 GBP
$1,443 USD
As of October 30, 2026
Save £2,435 GBP (69%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £3,511 GBP at With Clarity · As of October 31, 2026
View at With Clarity

About this 1.81ct lab-grown marquise diamond

This 1.81ct lab-grown marquise sits in the one-and-a-half to two carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG799671726 or 799671726. Listed at 12 retailers as of October 30, 2026, with prices from £1,077 to £3,511, a £2,435 spread on the same certified stone. With Clarity lists it at £3,511. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.81
Carat
E
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.6°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG799671726
Dimensions12.61 × 6.41 × 3.97 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
12.61 mm6.41 mm1.81 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG799671726
Side View
Table 61.0%Crown 33.6°Girdle: MED-STKPavilion 41.1°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: £2,746 GBP|Low: £1,077 GBP|High: £4,053 GBP|Avg: £2,151 GBP|-32.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
With Clarity
October 30, 2026
Retailer 8£1,077 GBP
Retailer 2£1,127 GBP
Retailer 10£1,245 GBP
Retailer 4£1,333 GBP
Retailer 11£1,388 GBP
Retailer 5£1,480 GBP
Retailer 6£1,576 GBP
Retailer 9£2,378 GBP
Retailer 1£2,746 GBP
Retailer 7£3,137 GBP
Retailer 3£3,214 GBP
With Clarity£3,511 GBP

42 data points across 12 retailers

12 retailers£1,077 GBP to £3,511 GBP

A
Cheapest Retailer
-
£1,077 GBP
$1,443 USD
A
Retailer 2
-
£1,127 GBP
HK$11,800 HKD
View
A
Retailer 3
-
£1,245 GBP
$1,668 USD
View
A
Retailer 4
-
£1,333 GBP
View
A
Retailer 5
-
£1,388 GBP
$1,860 USD
View
A
Retailer 6
-
£1,480 GBP
€1,889 EUR
View
B+
Retailer 7
-
£1,576 GBP
A$3,248 AUD
View
B
Retailer 8
-
£2,378 GBP
$3,186 USD
View
B
Retailer 9
-
£2,746 GBP
$3,680 USD
View
B
Retailer 10
-
£3,137 GBP
View
B
Retailer 11
-
£3,214 GBP
$4,306 USD
View
Most Expensive
B
With Clarity
799671726 · Oct 31
£3,511 GBP
$4,705 USD
View
11 more retailers have this diamond
Prices start from £1,077 GBPSave up to £2,435 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
1.81ct Marquise
£1,077 GBP