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Radiant|Lab Grown|IGI

1.26ct D IF Radiant Lab Grown Diamond

EX • D/IF • IGI LG788607424

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

Certificate IGI LG788607424

Diamond specifications and retailer prices

From £179 GBP
As of November 4, 2026
Save £1,184 GBP (87%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £1,370 GBP at Rare Carat · As of October 18, 2026
View at Rare Carat

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 LG788607424 or 788607424. Listed at 21 retailers as of November 4, 2026, with a 660% 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

1.26
Carat
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.4°
Pavilion angle33.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG788607424
Dimensions8.06 × 5.22 × 3.51 mm
L/W Ratio1.54
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
8.06 mm5.22 mm1.26 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG788607424
Side View
Table 65.0%Crown 42.4°Girdle: STK-THKPavilion 33.4°Culet: NoneDepth 67.2%

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: £1,370 GBP|Low: £172 GBP|High: £1,830 GBP|Avg: £536 GBP|-1.6%
Rare Carat
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 16
November 4, 2026
Retailer 15£179 GBP
Retailer 8£200 GBP
Retailer 5£208 GBP
Retailer 6£222 GBP
Retailer 16£222 GBP
Retailer 12£369 GBP
Retailer 4£375 GBP
Retailer 10£384 GBP
Retailer 7£401 GBP
Retailer 2£417 GBP
Retailer 9£544 GBP
Retailer 3£715 GBP
Retailer 14£717 GBP
Retailer 11£890 GBP
Retailer 13£1,363 GBP
Rare Carat£1,370 GBP

44 data points across 16 retailers

21 retailers£179 GBP to £1,363 GBP

A
Cheapest Retailer
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£179 GBP
A
Retailer 2
-
£200 GBP
View
Final sale: no returns
A
Retailer 3
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£208 GBP
View
A
Retailer 4
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£222 GBP
View
Retailer 5
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£222 GBP
View
Price last confirmed 10 days ago
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Retailer 6
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£246 GBP
View
A
Retailer 7
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£369 GBP
View
A
Retailer 8
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£375 GBP
View
A
Retailer 9
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£384 GBP
View
A
Retailer 10
-
£401 GBP
View
A
Retailer 11
-
£417 GBP
View
A
Retailer 12
-
£544 GBP
View
B+
Retailer 13
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£610 GBP
View
B+
Retailer 14
-
£715 GBP
View
B+
Retailer 15
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£717 GBP
View
B+
Retailer 16
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£719 GBP
View
B+
Retailer 17
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£753 GBP
View
B+
Retailer 18
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£890 GBP
View
B
Retailer 19
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£983 GBP
View
B
Retailer 20
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£1,363 GBP
View
Most Expensive
Rare Carat
A9-253B · Oct 18
£1,370 GBP
$1,850 USD
View
Price last confirmed 16 days ago
20 more retailers have this diamond
Prices start from £179 GBPSave up to £1,184 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