Marquise|Lab Grown|IGI

1.51ct E FL Marquise Lab Grown Diamond

EX • E/FL • IGI LG836619913

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG836619913

Diamond specifications and retailer prices

From £551 GBP
$738 USD
As of October 30, 2026
Save £2,106 GBP (79%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £2,657 GBP at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.51ct lab-grown marquise diamond

This 1.51ct 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 LG836619913 or 836619913. Listed at 21 retailers as of October 30, 2026, with prices from £551 to £2,657, a £2,106 spread on the same certified stone. Brilliant Earth lists it at £2,657. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
E
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.7°
Pavilion angle42°
OriginLab Grown
Grading LabIGI
CertificateIGI LG836619913
Dimensions11.52 × 5.99 × 3.88 mm
L/W Ratio1.92
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
11.52 mm5.99 mm1.51 ctE / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG836619913
Side View
Table 59.0%Crown 34.7°Girdle: MED-STKPavilion 42°Culet: NoneDepth 64.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £2,657 GBP|Low: £551 GBP|High: £2,873 GBP|Avg: £1,556 GBP|-7.5%
Brilliant Earth
Retailer 2
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Retailer 20
October 30, 2026
Retailer 6£551 GBP
Retailer 3£599 GBP
Retailer 20£639 GBP
Retailer 11£648 GBP
Retailer 17£772 GBP
Retailer 4£870 GBP
Retailer 2£1,026 GBP
Retailer 19£1,034 GBP
Retailer 18£1,059 GBP
Retailer 14£1,174 GBP
Retailer 7£1,381 GBP
Retailer 12£1,796 GBP
Retailer 9£1,990 GBP
Retailer 15£2,109 GBP
Retailer 10£2,203 GBP
Retailer 8£2,322 GBP
Retailer 16£2,422 GBP
Retailer 5£2,475 GBP
Retailer 13£2,522 GBP
Brilliant Earth£2,657 GBP

29 data points across 20 retailers

21 retailers£551 GBP to £2,657 GBP

A
Cheapest Retailer
-
£551 GBP
$738 USD
A
Retailer 2
-
£599 GBP
$803 USD
View
A
Retailer 3
-
£639 GBP
$856 USD
View
A
Retailer 4
-
£648 GBP
$868 USD
View
Final sale: no returns
Retailer 5
-
£666 GBP
$892 USD
View
Price last confirmed 13 days ago
A
Retailer 6
-
£772 GBP
$1,035 USD
View
A
Retailer 7
-
£870 GBP
$1,166 USD
View
A
Retailer 8
-
£1,026 GBP
View
A
Retailer 9
-
£1,034 GBP
$1,386 USD
View
A
Retailer 10
-
£1,059 GBP
€1,352 EUR
View
A
Retailer 11
-
£1,174 GBP
ZAR 25,422 ZAR
View
B+
Retailer 12
-
£1,381 GBP
$1,851 USD
View
B+
Retailer 13
-
£1,796 GBP
$2,407 USD
View
B
Retailer 14
-
£1,990 GBP
View
B+
Retailer 15
-
£2,109 GBP
$2,826 USD
View
B
Retailer 16
-
£2,203 GBP
$2,951 USD
View
B
Retailer 17
-
£2,322 GBP
SGD 4,205 SGD
View
B
Retailer 18
-
£2,422 GBP
$3,245 USD
View
B
Retailer 19
-
£2,475 GBP
$3,316 USD
View
B
Retailer 20
-
£2,522 GBP
View
Most Expensive
B
Brilliant Earth
21589183A · Oct 30
£2,657 GBP
$3,560 USD
View
20 more retailers have this diamond
Prices start from £551 GBPSave up to £2,106 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
1.51ct Marquise
£551 GBP