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Radiant|Lab Grown|IGI

1.28ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG770634043

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

Certificate IGI LG770634043

Diamond specifications and retailer prices

From £1,748 GBP
$2,360 USD
As of November 2, 2026
1 retailer carries this diamond
Only listing: £1,748 GBP at Shane Co
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 Shane Co

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 LG770634043 or 770634043. Listed at a single retailer as of November 2, 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 angle45.2°
Pavilion angle36.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG770634043
Dimensions7.87 × 5.33 × 3.60 mm
L/W Ratio1.48
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 mm5.33 mm1.28 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG770634043
Side View
Table 62.0%Crown 45.2°Girdle: MediumPavilion 36.2°Culet: NoneDepth 67.5%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 2
Current: £1,087 GBP|Low: £162 GBP|High: £1,911 GBP|Avg: £776 GBP|-0.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Shane Co
September 18, 2026
Retailer 9£162 GBP
Retailer 6£360 GBP
Retailer 11£442 GBP
Retailer 4£526 GBP
Retailer 5£544 GBP
Retailer 3£718 GBP
Retailer 10£967 GBP
Retailer 1£1,087 GBP
Retailer 8£1,129 GBP
Retailer 7£1,139 GBP
Retailer 2£1,608 GBP
Shane Co£1,748 GBP

16 data points across 12 retailers

1 retailer

B
Shane Co
26E0TPZ · Nov 2
£1,748 GBP
$2,360 USD
View

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B
1.28ct Radiant
£1,748 GBP