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Marquise|Lab Grown|IGI

1.25ct D IF Marquise Lab Grown Diamond

VG • D/IF • IGI LG836603482

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG836603482

Diamond specifications and retailer prices

From £259 GBP
As of November 4, 2026
Save £1,297 GBP (83%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: £1,556 GBP at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

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 very-good cut grade and certified by IGI LG836603482 or 836603482. Listed at 24 retailers as of November 4, 2026, with prices from £259 to £1,556, a £1,297 spread on the same certified stone. Brilliant Earth lists it at £1,556. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.25
Carat
D
Colour
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG836603482
Dimensions11.01 × 5.64 × 3.54 mm
L/W Ratio1.95
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
11.01 mm5.64 mm1.25 ctD / IF
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG836603482
Side View
Table 59.0%Crown 34.2°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 62.8%

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: £1,556 GBP|Low: £259 GBP|High: £1,837 GBP|Avg: £906 GBP|-15.3%
Brilliant Earth
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November 5, 2026
Retailer 23£259 GBP
Retailer 7£300 GBP
Retailer 22£312 GBP
Retailer 2£321 GBP
Retailer 20£330 GBP
Retailer 19£370 GBP
Retailer 18£433 GBP
Retailer 5£453 GBP
Retailer 13£571 GBP
Retailer 15£644 GBP
Retailer 16£656 GBP
Retailer 11£722 GBP
Retailer 9£733 GBP
Retailer 21£782 GBP
Retailer 4£941 GBP
Retailer 3£1,031 GBP
Retailer 10£1,062 GBP
Retailer 14£1,137 GBP
Retailer 8£1,230 GBP
Retailer 6£1,237 GBP
Retailer 17£1,250 GBP
Retailer 12£1,377 GBP
Brilliant Earth£1,556 GBP

15 data points across 23 retailers

24 retailers£259 GBP to £1,556 GBP

A
Cheapest Retailer
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£259 GBP
A
Retailer 2
-
£300 GBP
View
A
Retailer 3
-
£312 GBP
View
Final sale: no returns
A
Retailer 4
-
£321 GBP
View
A
Retailer 5
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£330 GBP
View
A
Retailer 6
-
£370 GBP
View
A
Retailer 7
-
£433 GBP
View
A
Retailer 8
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£453 GBP
View
A
Retailer 9
-
£571 GBP
View
Retailer 10
-
£644 GBP
View
Price last confirmed 11 days ago
B+
Retailer 11
-
£656 GBP
View
B+
Retailer 12
-
£722 GBP
View
B+
Retailer 13
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£733 GBP
View
B+
Retailer 14
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£782 GBP
View
B+
Retailer 15
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£878 GBP
View
B+
Retailer 16
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£941 GBP
View
B+
Retailer 17
-
£1,031 GBP
View
B+
Retailer 18
-
£1,062 GBP
View
Retailer 19
-
£1,137 GBP
View
Price last confirmed 8 days ago
B
Retailer 20
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£1,230 GBP
View
B
Retailer 21
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£1,237 GBP
View
B
Retailer 22
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£1,250 GBP
View
B
Retailer 23
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£1,377 GBP
View
Most Expensive
B
Brilliant Earth
22234847A · Nov 4
£1,556 GBP
$2,100 USD
View
23 more retailers have this diamond
Prices start from £259 GBPSave up to £1,297 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
£259 GBP