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Marquise|Lab Grown|IGI

1.15ct E FL Marquise Lab Grown Diamond

EX • E/FL • IGI LG800685263

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG800685263

Diamond specifications and retailer prices

From £146 GBP
$196 USD
As of October 30, 2026
Save £1,477 GBP (91%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £1,623 GBP at Rare Carat · As of October 28, 2026
View at Rare Carat

About this 1.15ct lab-grown marquise diamond

This 1.15ct 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 LG800685263 or 800685263. Listed at 14 retailers as of October 28, 2026, with prices from £146 to £1,623, a £1,477 spread on the same certified stone. Rare Carat lists it at £1,623. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.15
Carat
E
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle39.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG800685263
Dimensions11.07 × 5.45 × 3.33 mm
L/W Ratio2.03
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
11.07 mm5.45 mm1.15 ctE / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG800685263
Side View
Table 57.0%Crown 34.4°Girdle: STK-THKPavilion 39.1°Culet: NoneDepth 61.1%

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: £1,623 GBP|Low: £146 GBP|High: £1,851 GBP|Avg: £773 GBP|+10.8%
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
Retailer 15
Retailer 16
October 30, 2026
Retailer 10£146 GBP
Retailer 3£169 GBP
Retailer 6£234 GBP
Retailer 11£295 GBP
Retailer 14£315 GBP
Retailer 9£352 GBP
Retailer 7£399 GBP
Retailer 4£420 GBP
Retailer 5£523 GBP
Retailer 12£584 GBP
Retailer 15£643 GBP
Retailer 16£802 GBP
Retailer 8£1,397 GBP
Retailer 13£1,403 GBP
Retailer 2£1,523 GBP
Rare Carat£1,623 GBP

26 data points across 16 retailers

14 retailers£146 GBP to £1,623 GBP

A
Cheapest Retailer
-
£146 GBP
$196 USD
A
Retailer 2
-
£169 GBP
$227 USD
View
A
Retailer 3
-
£234 GBP
$314 USD
View
Final sale: no returns
A
Retailer 4
-
£295 GBP
$395 USD
View
A
Retailer 5
-
£315 GBP
$422 USD
View
A
Retailer 6
-
£352 GBP
€449 EUR
View
A
Retailer 7
-
£420 GBP
$563 USD
View
B+
Retailer 8
-
£523 GBP
A$1,078 AUD
View
B+
Retailer 9
-
£584 GBP
$783 USD
View
B+
Retailer 10
-
£643 GBP
$861 USD
View
B+
Retailer 11
-
£802 GBP
View
B
Retailer 12
-
£1,403 GBP
$1,880 USD
View
B
Retailer 13
-
£1,523 GBP
$2,040 USD
View
Most Expensive
B
Rare Carat
P86J-19C · Oct 28
£1,623 GBP
$2,175 USD
View
13 more retailers have this diamond
Prices start from £146 GBPSave up to £1,477 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
1.15ct Marquise
£146 GBP