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Radiant|Lab Grown|IGI

1.26ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG669419025

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG669419025

Diamond specifications and retailer prices

From £179 GBP
As of November 4, 2026
Save £1,258 GBP (88%) vs most expensive(unlock to see where)
27 retailers carry this diamond
Most expensive: £1,437 GBP at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 1.26ct lab-grown radiant diamond

This 1.26ct lab-grown radiant 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 LG669419025 or 669419025. Listed at 27 retailers as of November 4, 2026, with prices from £179 to £1,437, a £1,258 spread on the same certified stone. Brilliant Earth lists it at £1,437. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.26
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.2°
Pavilion angle34.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG669419025
Dimensions7.87 × 5.29 × 3.60 mm
L/W Ratio1.49
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
7.87 mm5.29 mm1.26 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG669419025
Side View
Table 60.0%Crown 40.2°Girdle: MediumPavilion 34.3°Culet: NoneDepth 68.1%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 4
Current: £1,437 GBP|Low: £179 GBP|High: £1,837 GBP|Avg: £631 GBP|-21.8%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 4, 2026
Retailer 3£179 GBP
Retailer 7£200 GBP
Retailer 4£315 GBP
Retailer 6£371 GBP
Retailer 10£384 GBP
Retailer 5£401 GBP
Retailer 2£417 GBP
Retailer 8£544 GBP
Retailer 13£718 GBP
Retailer 9£891 GBP
Retailer 11£905 GBP
Retailer 12£1,367 GBP
Brilliant Earth£1,437 GBP

43 data points across 13 retailers

27 retailers£179 GBP to £1,437 GBP

A
Cheapest Retailer
-
£179 GBP
Retailer 2
-
£179 GBP
View
Price last confirmed 27 days ago
Retailer 3
-
£179 GBP
View
Price last confirmed 35 days ago
A
Retailer 4
-
£200 GBP
View
Final sale: no returns
Retailer 5
-
£208 GBP
View
Price last confirmed 38 days ago
Retailer 6
-
£219 GBP
View
Price last confirmed 36 days ago
Retailer 7
-
£222 GBP
View
Price last confirmed 32 days ago
A
Retailer 8
-
£256 GBP
View
A
Retailer 9
-
£315 GBP
View
A
Retailer 10
-
£371 GBP
View
A
Retailer 11
-
£384 GBP
View
A
Retailer 12
-
£401 GBP
View
A
Retailer 13
-
£417 GBP
View
A
Retailer 14
-
£544 GBP
View
B+
Retailer 15
-
£610 GBP
View
B+
Retailer 16
-
£715 GBP
View
Retailer 17
-
£715 GBP
View
Price last confirmed 35 days ago
Retailer 18
-
£715 GBP
View
Price last confirmed 25 days ago
B+
Retailer 19
-
£718 GBP
View
B+
Retailer 20
-
£753 GBP
View
B+
Retailer 21
-
£753 GBP
View
B+
Retailer 22
-
£820 GBP
View
B+
Retailer 23
-
£891 GBP
View
B+
Retailer 24
-
£905 GBP
View
B
Retailer 25
-
£984 GBP
View
Retailer 26
-
£1,367 GBP
View
Price last confirmed 17 days ago
Most Expensive
B
Brilliant Earth
13182610A · Nov 4
£1,437 GBP
$1,940 USD
View
26 more retailers have this diamond
Prices start from £179 GBPSave up to £1,258 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
1.26ct Radiant
£179 GBP