Marquise|Lab Grown|IGI

1.20ct D IF Marquise Lab Grown Diamond

EX • D/IF • IGI LG825687968

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG825687968

Diamond specifications and retailer prices

From £205 GBP
As of November 4, 2026
Save £861 GBP (81%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £1,703 GBP at Queensmith · As of October 27, 2026
View at Queensmith

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 LG825687968 or 825687968. Listed at 23 retailers as of November 4, 2026, with a 420% 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

1.20
Carat
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG825687968
Dimensions11.19 × 5.42 × 3.48 mm
L/W Ratio2.06
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
11.19 mm5.42 mm1.20 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG825687968
Side View
Table 59.0%Crown 35.5°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 64.2%

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: £444 GBP|Low: £197 GBP|High: £1,255 GBP|Avg: £603 GBP|-10.9%
Retailer 1
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November 5, 2026
Retailer 4£205 GBP
Retailer 13£229 GBP
Retailer 3£239 GBP
Retailer 9£255 GBP
Retailer 15£255 GBP
Retailer 20£284 GBP
Retailer 18£350 GBP
Retailer 19£370 GBP
Retailer 21£418 GBP
Retailer 17£439 GBP
Retailer 1£444 GBP
Retailer 11£568 GBP
Retailer 16£624 GBP
Retailer 2£783 GBP
Retailer 7£818 GBP
Retailer 8£819 GBP
Retailer 10£856 GBP
Retailer 6£903 GBP
Retailer 12£1,018 GBP
Retailer 14£1,067 GBP
Retailer 22£1,085 GBP
Retailer 5£1,250 GBP

42 data points across 22 retailers

23 retailers£205 GBP to £1,067 GBP

A
Cheapest Retailer
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£205 GBP
A
Retailer 2
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£229 GBP
View
Final sale: no returns
A
Retailer 3
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£239 GBP
View
Retailer 4
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£255 GBP
View
Price last confirmed 11 days ago
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Retailer 5
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£255 GBP
View
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Retailer 6
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£284 GBP
View
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Retailer 7
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£350 GBP
View
A
Retailer 8
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£370 GBP
View
Retailer 9
-
£418 GBP
View
Price last confirmed 11 days ago
A
Retailer 10
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£439 GBP
View
A
Retailer 11
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£444 GBP
View
B+
Retailer 12
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£568 GBP
View
B+
Retailer 13
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£624 GBP
View
B+
Retailer 14
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£783 GBP
View
B+
Retailer 15
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£818 GBP
View
B+
Retailer 16
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£819 GBP
View
B+
Retailer 17
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£856 GBP
View
B+
Retailer 18
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£903 GBP
View
B+
Retailer 19
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£1,018 GBP
View
B
Retailer 20
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£1,067 GBP
View
Retailer 21
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£1,085 GBP
View
Price last confirmed 8 days ago
Retailer 22
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£1,250 GBP
View
Price last confirmed 28 days ago
Most Expensive
Queensmith
LG825687968 · Oct 27
£1,703 GBP
View
Price last confirmed 8 days ago
22 more retailers have this diamond
Prices start from £205 GBPSave up to £861 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
£205 GBP