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Marquise|Lab Grown|IGI

1.20ct D IF Marquise Lab Grown Diamond

ID • D/IF • IGI LG795629389

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG795629389

Diamond specifications and retailer prices

From £173 GBP
As of November 2, 2026
Save £1,493 GBP (90%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £1,667 GBP at Do Amore Diamonds · As of November 3, 2026
View at Do Amore Diamonds

About this 1.2ct lab-grown marquise diamond

This 1.2ct lab-grown marquise sits in the classic one-carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG795629389 or 795629389. Listed at 15 retailers as of November 2, 2026, with prices from £173 to £1,667, a £1,493 spread on the same certified stone. Do Amore Diamonds lists it at £1,667. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.20
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.8°
Pavilion angle39.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG795629389
Dimensions11.13 × 5.52 × 3.40 mm
L/W Ratio2.02
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
11.13 mm5.52 mm1.20 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG795629389
Side View
Table 60.0%Crown 33.8°Girdle: MED-STKPavilion 39.9°Culet: NoneDepth 61.6%

Caratlytics Score

How it works →
A+
Exceptional
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: £1,667 GBP|Low: £170 GBP|High: £1,704 GBP|Avg: £739 GBP|-2.2%
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
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Retailer 15
November 3, 2026
Retailer 12£173 GBP
Retailer 3£201 GBP
Retailer 8£244 GBP
Retailer 14£365 GBP
Retailer 11£401 GBP
Retailer 7£446 GBP
Retailer 6£480 GBP
Retailer 2£583 GBP
Retailer 13£695 GBP
Retailer 15£764 GBP
Retailer 9£953 GBP
Retailer 4£1,074 GBP
Retailer 5£1,250 GBP
Retailer 10£1,304 GBP
Do Amore Diamonds£1,667 GBP

38 data points across 15 retailers

15 retailers£173 GBP to £1,667 GBP

A+
Cheapest Retailer
-
£173 GBP
A
Retailer 2
-
£201 GBP
View
A
Retailer 3
-
£244 GBP
View
A
Retailer 4
-
£365 GBP
View
A
Retailer 5
-
£401 GBP
View
A
Retailer 6
-
£446 GBP
View
A
Retailer 7
-
£480 GBP
View
B+
Retailer 8
-
£583 GBP
View
B+
Retailer 9
-
£695 GBP
View
B+
Retailer 10
-
£764 GBP
View
B+
Retailer 11
-
£953 GBP
View
Retailer 12
-
£1,074 GBP
View
Price last confirmed 8 days ago
Retailer 13
-
£1,250 GBP
View
Price last confirmed 28 days ago
B
Retailer 14
-
£1,304 GBP
View
Most Expensive
B
Do Amore Diamonds
27-43CFF974D · Nov 3
£1,667 GBP
$2,250 USD
View
14 more retailers have this diamond
Prices start from £173 GBPSave up to £1,493 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+
1.20ct Marquise
£173 GBP