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Radiant|Lab Grown|IGI

1.28ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG704537501

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

Certificate IGI LG704537501

Diamond specifications and retailer prices

From £2,215 GBP
$2,990 USD
As of November 4, 2026
1 retailer carries this diamond
Only listing: £2,215 GBP at Brilliant Earth
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at Brilliant Earth

About this 1.28ct lab-grown radiant diamond

This 1.28ct 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 LG704537501 or 704537501. Listed at a single retailer as of November 4, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.28
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.1°
Pavilion angle33.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG704537501
Dimensions7.72 × 5.38 × 3.56 mm
L/W Ratio1.43
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.72 mm5.38 mm1.28 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG704537501
Side View
Table 61.0%Crown 42.1°Girdle: MED-STKPavilion 33.5°Culet: NoneDepth 66.2%

Caratlytics Score

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B
Good
Decent quality, room for better deals
Unlock full score analysis
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Price History

Last verified: Nov 4
Current: £2,215 GBP|Low: £453 GBP|High: £2,741 GBP|Avg: £1,420 GBP|-19.2%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 4, 2026
Retailer 4£455 GBP
Retailer 5£719 GBP
Retailer 6£744 GBP
Retailer 3£1,213 GBP
Retailer 2£1,490 GBP
Retailer 7£1,621 GBP
Retailer 8£1,647 GBP
Brilliant Earth£2,215 GBP

41 data points across 8 retailers

1 retailer

B
Brilliant Earth
18984509B · Nov 4
£2,215 GBP
$2,990 USD
View

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B
1.28ct Radiant
£2,215 GBP