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Marquise|Lab Grown|IGI

1.35ct D FL Marquise Lab Grown Diamond

EX • D/FL • IGI LG799676824

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG799676824

Diamond specifications and retailer prices

From £320 GBP
As of November 4, 2026
Save £1,547 GBP (83%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £1,867 GBP at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 1.35ct lab-grown marquise diamond

This 1.35ct lab-grown marquise sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG799676824 or 799676824. Listed at 22 retailers as of November 4, 2026, with prices from £320 to £1,867, a £1,547 spread on the same certified stone. Brilliant Earth lists it at £1,867. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.35
Carat
D
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.7°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG799676824
Dimensions11.27 × 5.92 × 3.66 mm
L/W Ratio1.90
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
11.27 mm5.92 mm1.35 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG799676824
Side View
Table 56.0%Crown 33.7°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 61.8%

Caratlytics Score

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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: Nov 4
Current: £1,867 GBP|Low: £320 GBP|High: £2,985 GBP|Avg: £1,038 GBP|-37.5%
Brilliant Earth
Retailer 2
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November 5, 2026
Retailer 17£320 GBP
Retailer 9£358 GBP
Retailer 19£358 GBP
Retailer 4£396 GBP
Retailer 14£407 GBP
Retailer 8£436 GBP
Retailer 22£504 GBP
Retailer 3£569 GBP
Retailer 20£624 GBP
Retailer 12£644 GBP
Retailer 2£647 GBP
Retailer 18£684 GBP
Retailer 6£737 GBP
Retailer 16£1,112 GBP
Retailer 11£1,151 GBP
Retailer 10£1,258 GBP
Retailer 5£1,275 GBP
Retailer 7£1,298 GBP
Retailer 21£1,431 GBP
Retailer 13£1,452 GBP
Retailer 15£1,722 GBP
Brilliant Earth£1,867 GBP

35 data points across 22 retailers

22 retailers£320 GBP to £1,867 GBP

A
Cheapest Retailer
-
£320 GBP
A
Retailer 2
-
£358 GBP
View
Final sale: no returns
A
Retailer 3
-
£358 GBP
View
A
Retailer 4
-
£396 GBP
View
Retailer 5
-
£407 GBP
View
Price last confirmed 11 days ago
A
Retailer 6
-
£436 GBP
View
A
Retailer 7
-
£504 GBP
View
A
Retailer 8
-
£569 GBP
View
A
Retailer 9
-
£624 GBP
View
Retailer 10
-
£644 GBP
View
Price last confirmed 9 days ago
A
Retailer 11
-
£647 GBP
View
A
Retailer 12
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£684 GBP
View
A
Retailer 13
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£737 GBP
View
B+
Retailer 14
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£1,112 GBP
View
B+
Retailer 15
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£1,151 GBP
View
B+
Retailer 16
-
£1,258 GBP
View
B+
Retailer 17
-
£1,275 GBP
View
B+
Retailer 18
-
£1,298 GBP
View
B
Retailer 19
-
£1,431 GBP
View
B
Retailer 20
-
£1,452 GBP
View
Retailer 21
-
£1,722 GBP
View
Price last confirmed 8 days ago
Most Expensive
B
Brilliant Earth
20004735A · Nov 4
£1,867 GBP
$2,520 USD
View
21 more retailers have this diamond
Prices start from £320 GBPSave up to £1,547 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
1.35ct Marquise
£320 GBP