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Marquise|Lab Grown|IGI

1.45ct D FL Marquise Lab Grown Diamond

EX • D/FL • IGI LG790698711

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG790698711

Diamond specifications and retailer prices

From £354 GBP
As of November 4, 2026
Save £2,833 GBP (89%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: £3,187 GBP at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 1.45ct lab-grown marquise diamond

This 1.45ct 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 LG790698711 or 790698711. Listed at 25 retailers as of November 4, 2026, with prices from £354 to £3,187, a £2,833 spread on the same certified stone. Brilliant Earth lists it at £3,187. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.45
Carat
D
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG790698711
Dimensions11.66 × 5.93 × 3.74 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
11.66 mm5.93 mm1.45 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG790698711
Side View
Table 55.0%Crown 34.2°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 63.1%

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: £3,187 GBP|Low: £340 GBP|High: £3,187 GBP|Avg: £1,109 GBP
Brilliant Earth
Retailer 2
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Retailer 19
November 5, 2026
Retailer 4£354 GBP
Retailer 2£396 GBP
Retailer 11£397 GBP
Retailer 7£440 GBP
Retailer 17£546 GBP
Retailer 6£652 GBP
Retailer 10£655 GBP
Retailer 18£705 GBP
Retailer 12£745 GBP
Retailer 19£756 GBP
Retailer 15£837 GBP
Retailer 9£1,277 GBP
Retailer 8£1,361 GBP
Retailer 3£1,415 GBP
Retailer 14£1,664 GBP
Retailer 16£2,026 GBP
Retailer 5£2,085 GBP
Retailer 13£2,727 GBP
Brilliant Earth£3,187 GBP

38 data points across 19 retailers

25 retailers£354 GBP to £3,187 GBP

A
Cheapest Retailer
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£354 GBP
A
Retailer 2
-
£396 GBP
View
Final sale: no returns
A
Retailer 3
-
£397 GBP
View
A
Retailer 4
-
£440 GBP
View
Retailer 5
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£440 GBP
View
Price last confirmed 20 days ago
A
Retailer 6
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£491 GBP
View
A
Retailer 7
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£546 GBP
View
A
Retailer 8
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£652 GBP
View
A
Retailer 9
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£655 GBP
View
Retailer 10
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£705 GBP
View
Price last confirmed 9 days ago
A
Retailer 11
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£745 GBP
View
A
Retailer 12
-
£756 GBP
View
A
Retailer 13
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£837 GBP
View
B+
Retailer 14
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£1,080 GBP
View
B+
Retailer 15
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£1,265 GBP
View
B+
Retailer 16
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£1,277 GBP
View
B+
Retailer 17
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£1,361 GBP
View
B+
Retailer 18
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£1,415 GBP
View
B+
Retailer 19
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£1,535 GBP
View
B+
Retailer 20
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£1,664 GBP
View
B
Retailer 21
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£1,889 GBP
View
B
Retailer 22
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£2,026 GBP
View
B
Retailer 23
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£2,085 GBP
View
B
Retailer 24
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£2,727 GBP
View
Most Expensive
B
Brilliant Earth
21575407Y · Nov 4
£3,187 GBP
$4,290 USD
View
24 more retailers have this diamond
Prices start from £354 GBPSave up to £2,833 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
1.45ct Marquise
£354 GBP