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Marquise|Lab Grown|IGI

1.25ct D IF Marquise Lab Grown Diamond

EX • D/IF • IGI LG762545368

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG762545368

Diamond specifications and retailer prices

From £370 GBP
As of November 4, 2026
Save £3,166 GBP (90%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £3,536 GBP at Diamond Quarter · As of November 2, 2026
View at Diamond Quarter

About this 1.25ct lab-grown marquise diamond

This 1.25ct lab-grown marquise sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG762545368 or 762545368. Listed at 15 retailers as of November 2, 2026, with prices from £370 to £3,536, a £3,166 spread on the same certified stone. Diamond Quarter lists it at £3,536. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.25
Carat
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.2°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG762545368
Dimensions11.05 × 5.65 × 3.57 mm
L/W Ratio1.96
Girdle conditionFaceted
Culet sizePointed
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
11.05 mm5.65 mm1.25 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG762545368
Side View
Table 55.0%Crown 36.2°Girdle: MED-STKPavilion 40.1°Culet: NoneDepth 63.2%

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: £571 GBP|Low: £370 GBP|High: £1,674 GBP|Avg: £981 GBP|-18.8%
Retailer 1
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
November 5, 2026
Retailer 8£370 GBP
Retailer 9£453 GBP
Retailer 1£571 GBP
Retailer 5£587 GBP
Retailer 3£646 GBP
Retailer 6£656 GBP
Retailer 13£722 GBP
Retailer 11£733 GBP
Retailer 12£1,062 GBP
Retailer 4£1,137 GBP
Retailer 10£1,230 GBP
Retailer 7£1,250 GBP
Retailer 2£1,370 GBP
Retailer 14£1,377 GBP

45 data points across 14 retailers

15 retailers£370 GBP to £3,536 GBP

A
Cheapest Retailer
-
£370 GBP
A
Retailer 2
-
£453 GBP
View
A
Retailer 3
-
£571 GBP
View
A
Retailer 4
-
£587 GBP
View
A
Retailer 5
-
£646 GBP
View
A
Retailer 6
-
£656 GBP
View
A
Retailer 7
-
£722 GBP
View
A
Retailer 8
-
£733 GBP
View
B+
Retailer 9
-
£1,062 GBP
View
Retailer 10
-
£1,137 GBP
View
Price last confirmed 8 days ago
B+
Retailer 11
-
£1,230 GBP
View
B+
Retailer 12
-
£1,250 GBP
View
B
Retailer 13
-
£1,370 GBP
View
B
Retailer 14
-
£1,377 GBP
View
Most Expensive
B
Diamond Quarter
1.25IFDLG8215D8N · Nov 2
£3,536 GBP
View
14 more retailers have this diamond
Prices start from £370 GBPSave up to £3,166 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
1.25ct Marquise
£370 GBP