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Marquise|Lab Grown|IGI

1.91ct E FL Marquise Lab Grown Diamond

EX • E/FL • IGI LG818623828

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG818623828

Diamond specifications and retailer prices

From £755 GBP
$1,011 USD
As of October 30, 2026
Save £5,948 GBP (89%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £6,702 GBP at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 1.91ct lab-grown marquise diamond

This 1.91ct 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 LG818623828 or 818623828. Listed at 22 retailers as of October 29, 2026, with prices from £755 to £6,702, a £5,948 spread on the same certified stone. Do Amore Diamonds lists it at £6,702. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.91
Carat
E
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818623828
Dimensions12.59 × 6.58 × 4.13 mm
L/W Ratio1.91
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
12.59 mm6.58 mm1.91 ctE / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818623828
Side View
Table 58.0%Crown 34.4°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 62.8%

Caratlytics Score

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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: £6,702 GBP|Low: £755 GBP|High: £7,642 GBP|Avg: £2,211 GBP|-12.3%
Do Amore Diamonds
Retailer 2
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Retailer 21
October 30, 2026
Retailer 10£755 GBP
Retailer 18£821 GBP
Retailer 6£846 GBP
Retailer 5£875 GBP
Retailer 15£1,008 GBP
Retailer 20£1,025 GBP
Retailer 21£1,231 GBP
Retailer 2£1,401 GBP
Retailer 16£1,466 GBP
Retailer 13£1,777 GBP
Retailer 12£1,811 GBP
Retailer 19£1,830 GBP
Retailer 7£2,033 GBP
Retailer 3£2,276 GBP
Retailer 8£2,673 GBP
Retailer 9£2,718 GBP
Retailer 4£2,795 GBP
Retailer 17£3,109 GBP
Retailer 14£3,116 GBP
Retailer 11£3,435 GBP
Do Amore Diamonds£6,702 GBP

33 data points across 21 retailers

22 retailers£755 GBP to £6,702 GBP

A
Cheapest Retailer
-
£755 GBP
$1,011 USD
A
Retailer 2
-
£821 GBP
$1,100 USD
View
A
Retailer 3
-
£846 GBP
$1,133 USD
View
Final sale: no returns
A
Retailer 4
-
£875 GBP
$1,173 USD
View
Retailer 5
-
£875 GBP
$1,173 USD
View
Price last confirmed 13 days ago
A
Retailer 6
-
£1,008 GBP
$1,350 USD
View
A
Retailer 7
-
£1,025 GBP
$1,373 USD
View
A
Retailer 8
-
£1,231 GBP
$1,650 USD
View
A
Retailer 9
-
£1,401 GBP
View
A
Retailer 10
-
£1,466 GBP
€1,871 EUR
View
B+
Retailer 11
-
£1,777 GBP
ZAR 38,455 ZAR
View
B+
Retailer 12
-
£1,811 GBP
$2,427 USD
View
B+
Retailer 13
-
£1,830 GBP
$2,452 USD
View
B+
Retailer 14
-
£2,033 GBP
$2,724 USD
View
B+
Retailer 15
-
£2,276 GBP
$3,050 USD
View
B+
Retailer 16
-
£2,673 GBP
View
B+
Retailer 17
-
£2,718 GBP
$3,642 USD
View
B+
Retailer 18
-
£2,795 GBP
$3,746 USD
View
B+
Retailer 19
-
£3,109 GBP
View
B
Retailer 20
-
£3,116 GBP
$4,175 USD
View
B
Retailer 21
-
£3,435 GBP
$4,602 USD
View
Most Expensive
B
Do Amore Diamonds
27-0B70763D2 · Oct 29
£6,702 GBP
$8,980 USD
View
21 more retailers have this diamond
Prices start from £755 GBPSave up to £5,948 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
1.91ct Marquise
£755 GBP