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Marquise|Lab Grown|IGI

1.01ct D FL Marquise Lab Grown Diamond

EX • D/FL • IGI LG800619728

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG800619728

Diamond specifications and retailer prices

From £187 GBP
As of November 4, 2026
Save £1,258 GBP (87%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £1,489 GBP at Rare Carat · As of September 30, 2026
View at Rare Carat

About this 1.01ct lab-grown marquise diamond

This 1.01ct lab-grown marquise sits in the classic one-carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG800619728 or 800619728. Listed at 23 retailers as of November 4, 2026, with a 674% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.01
Carat
D
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.9°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG800619728
Dimensions11.20 × 5.11 × 3.15 mm
L/W Ratio2.19
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
11.20 mm5.11 mm1.01 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG800619728
Side View
Table 59.0%Crown 32.9°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 61.6%

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: Nov 4
Current: £436 GBP|Low: £187 GBP|High: £2,007 GBP|Avg: £585 GBP|-17.7%
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November 4, 2026
Retailer 3£187 GBP
Retailer 10£208 GBP
Retailer 18£216 GBP
Retailer 8£232 GBP
Retailer 9£256 GBP
Retailer 15£301 GBP
Retailer 22£317 GBP
Retailer 12£352 GBP
Retailer 17£399 GBP
Retailer 21£412 GBP
Retailer 6£420 GBP
Retailer 1£436 GBP
Retailer 13£487 GBP
Retailer 14£610 GBP
Retailer 11£621 GBP
Retailer 16£711 GBP
Retailer 20£744 GBP
Retailer 7£782 GBP
Retailer 5£811 GBP
Retailer 19£927 GBP
Retailer 4£1,007 GBP
Retailer 2£1,444 GBP

39 data points across 22 retailers

23 retailers£187 GBP to £1,444 GBP

A
Cheapest Retailer
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£187 GBP
A
Retailer 2
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£208 GBP
View
Final sale: no returns
A
Retailer 3
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£216 GBP
View
A
Retailer 4
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£232 GBP
View
A
Retailer 5
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£256 GBP
View
Retailer 6
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£301 GBP
View
Price last confirmed 10 days ago
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Retailer 7
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£317 GBP
View
A
Retailer 8
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£352 GBP
View
A
Retailer 9
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£399 GBP
View
A
Retailer 10
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£412 GBP
View
A
Retailer 11
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£420 GBP
View
A
Retailer 12
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£436 GBP
View
Retailer 13
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£487 GBP
View
Price last confirmed 10 days ago
B+
Retailer 14
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£610 GBP
View
B+
Retailer 15
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£621 GBP
View
B+
Retailer 16
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£711 GBP
View
B+
Retailer 17
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£744 GBP
View
B+
Retailer 18
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£782 GBP
View
B
Retailer 19
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£811 GBP
View
B+
Retailer 20
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£927 GBP
View
B
Retailer 21
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£1,007 GBP
View
B
Retailer 22
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£1,444 GBP
View
Most Expensive
Rare Carat
PE7286197PA800 · Sep 30
£1,489 GBP
$2,010 USD
View
Price last confirmed 35 days ago
22 more retailers have this diamond
Prices start from £187 GBPSave up to £1,258 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
1.01ct Marquise
£187 GBP