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Marquise|Lab Grown|IGI

1.31ct D FL Marquise Lab Grown Diamond

ID • D/FL • IGI LG800676819

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG800676819

Diamond specifications and retailer prices

From £228 GBP
As of November 4, 2026
Save £1,794 GBP (89%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £2,022 GBP at Do Amore Diamonds · As of November 4, 2026
View at Do Amore Diamonds

About this 1.31ct lab-grown marquise diamond

This 1.31ct 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 LG800676819 or 800676819. Listed at 15 retailers as of November 4, 2026, with prices from £228 to £2,022, a £1,794 spread on the same certified stone. Do Amore Diamonds lists it at £2,022. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.31
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.3°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG800676819
Dimensions11.53 × 5.65 × 3.51 mm
L/W Ratio2.04
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
11.53 mm5.65 mm1.31 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG800676819
Side View
Table 57.0%Crown 33.3°Girdle: MED-STKPavilion 40°Culet: NoneDepth 62.1%

Caratlytics Score

How it works →
A+
Exceptional
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: £2,022 GBP|Low: £228 GBP|High: £2,541 GBP|Avg: £894 GBP|-11.9%
Do Amore Diamonds
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
November 5, 2026
Retailer 10£228 GBP
Retailer 15£264 GBP
Retailer 7£289 GBP
Retailer 11£401 GBP
Retailer 5£415 GBP
Retailer 13£461 GBP
Retailer 8£527 GBP
Retailer 6£535 GBP
Retailer 3£601 GBP
Retailer 12£868 GBP
Retailer 14£1,002 GBP
Retailer 2£1,246 GBP
Retailer 4£1,670 GBP
Retailer 9£1,689 GBP
Do Amore Diamonds£2,022 GBP

29 data points across 15 retailers

15 retailers£228 GBP to £2,022 GBP

A+
Cheapest Retailer
-
£228 GBP
A
Retailer 2
-
£264 GBP
View
A
Retailer 3
-
£289 GBP
View
Final sale: no returns
A
Retailer 4
-
£401 GBP
View
A
Retailer 5
-
£415 GBP
View
A
Retailer 6
-
£461 GBP
View
A
Retailer 7
-
£527 GBP
View
A
Retailer 8
-
£535 GBP
View
A
Retailer 9
-
£601 GBP
View
B+
Retailer 10
-
£868 GBP
View
B+
Retailer 11
-
£1,002 GBP
View
B+
Retailer 12
-
£1,246 GBP
View
Retailer 13
-
£1,670 GBP
View
Price last confirmed 8 days ago
B+
Retailer 14
-
£1,689 GBP
View
Most Expensive
B
Do Amore Diamonds
27-9FE0E3BBE · Nov 4
£2,022 GBP
$2,730 USD
View
14 more retailers have this diamond
Prices start from £228 GBPSave up to £1,794 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+
1.31ct Marquise
£228 GBP