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Radiant|Lab Grown|IGI

1.28ct D VVS1 Radiant Lab Grown Diamond

ID • D/VVS1 • IGI LG743574650

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

Certificate IGI LG743574650

Diamond specifications and retailer prices

From £147 GBP
As of November 4, 2026
Save £1,577 GBP (91%) vs most expensive(unlock to see where)
28 retailers carry this diamond
Most expensive: £1,724 GBP at Yadav Diamonds · As of November 4, 2026
View at Yadav Diamonds

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 VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG743574650 or 743574650. Listed at 28 retailers as of November 4, 2026, with prices from £147 to £1,724, a £1,577 spread on the same certified stone. Yadav Diamonds lists it at £1,724. 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
VVS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.8°
Pavilion angle36.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG743574650
Dimensions7.67 × 5.46 × 3.67 mm
L/W Ratio1.40
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
7.67 mm5.46 mm1.28 ctD / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG743574650
Side View
Table 65.0%Crown 39.8°Girdle: MED-STKPavilion 36.5°Culet: NoneDepth 67.2%

Caratlytics Score

How it works →
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: £371 GBP|Low: £141 GBP|High: £1,479 GBP|Avg: £529 GBP|+3.7%
Retailer 1
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Retailer 12
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Retailer 18
November 5, 2026
Retailer 3£147 GBP
Retailer 8£171 GBP
Retailer 4£183 GBP
Retailer 9£183 GBP
Retailer 16£325 GBP
Retailer 13£348 GBP
Retailer 1£371 GBP
Retailer 10£422 GBP
Retailer 12£493 GBP
Retailer 18£589 GBP
Retailer 5£648 GBP
Retailer 11£666 GBP
Retailer 6£738 GBP
Retailer 17£791 GBP
Retailer 2£792 GBP
Retailer 14£808 GBP
Retailer 7£973 GBP
Retailer 15£1,479 GBP

45 data points across 18 retailers

28 retailers£147 GBP to £1,724 GBP

A
Cheapest Retailer
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£147 GBP
A
Retailer 2
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£164 GBP
View
Final sale: no returns
A
Retailer 3
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£171 GBP
View
Retailer 4
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£183 GBP
View
Price last confirmed 12 days ago
A
Retailer 5
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£183 GBP
View
B+
Retailer 6
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£245 GBP
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A
Retailer 7
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£325 GBP
View
A
Retailer 8
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£348 GBP
View
A
Retailer 9
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£371 GBP
View
A
Retailer 10
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£371 GBP
View
B+
Retailer 11
-
£422 GBP
View
B+
Retailer 12
-
£493 GBP
View
B+
Retailer 13
-
£589 GBP
View
B+
Retailer 14
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£648 GBP
View
B+
Retailer 15
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£666 GBP
View
B+
Retailer 16
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£668 GBP
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B+
Retailer 17
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£738 GBP
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B
Retailer 18
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£776 GBP
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Retailer 19
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£791 GBP
View
Price last confirmed 19 days ago
B
Retailer 20
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£792 GBP
View
B+
Retailer 21
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£808 GBP
View
B
Retailer 22
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£883 GBP
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B
Retailer 23
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£973 GBP
View
B
Retailer 24
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£1,256 GBP
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B
Retailer 25
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£1,256 GBP
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B
Retailer 26
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£1,412 GBP
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B
Retailer 27
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£1,479 GBP
View
Most Expensive
B
Yadav Diamonds
13210009 · Nov 4
£1,724 GBP
$2,320 USD
View
27 more retailers have this diamond
Prices start from £147 GBPSave up to £1,577 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
1.28ct Radiant
£147 GBP