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Radiant|Lab Grown|IGI

1.21ct D VVS1 Radiant Lab Grown Diamond

ID • D/VVS1 • IGI LG754507800

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

Certificate IGI LG754507800

Diamond specifications and retailer prices

From £135 GBP
As of November 4, 2026
Save £1,161 GBP (90%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: £1,296 GBP at Do Amore Diamonds · As of November 4, 2026
View at Do Amore Diamonds

About this 1.21ct lab-grown radiant diamond

This 1.21ct lab-grown radiant sits in the classic one-carat band, graded D colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG754507800 or 754507800. Listed at 24 retailers as of November 4, 2026, with prices from £135 to £1,296, a £1,161 spread on the same certified stone. Do Amore Diamonds lists it at £1,296. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.21
Carat
D
Colour
VVS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle47.1°
Pavilion angle31.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG754507800
Dimensions7.83 × 5.23 × 3.44 mm
L/W Ratio1.50
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
7.83 mm5.23 mm1.21 ctD / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG754507800
Side View
Table 60.0%Crown 47.1°Girdle: MediumPavilion 31.7°Culet: NoneDepth 65.8%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 4
Current: £1,296 GBP|Low: £130 GBP|High: £1,296 GBP|Avg: £489 GBP
Do Amore Diamonds
Retailer 2
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November 5, 2026
Retailer 5£135 GBP
Retailer 10£153 GBP
Retailer 17£156 GBP
Retailer 3£167 GBP
Retailer 4£211 GBP
Retailer 9£261 GBP
Retailer 14£313 GBP
Retailer 12£318 GBP
Retailer 2£335 GBP
Retailer 11£450 GBP
Retailer 7£567 GBP
Retailer 6£593 GBP
Retailer 16£688 GBP
Retailer 18£785 GBP
Retailer 8£842 GBP
Retailer 15£844 GBP
Retailer 13£862 GBP
Do Amore Diamonds£1,296 GBP

40 data points across 18 retailers

24 retailers£135 GBP to £1,296 GBP

A
Cheapest Retailer
-
£135 GBP
A
Retailer 2
-
£153 GBP
View
Final sale: no returns
A
Retailer 3
-
£156 GBP
View
A
Retailer 4
-
£167 GBP
View
B+
Retailer 5
-
£261 GBP
View
A
Retailer 6
-
£265 GBP
View
A
Retailer 7
-
£313 GBP
View
A
Retailer 8
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£318 GBP
View
A
Retailer 9
-
£333 GBP
View
A
Retailer 10
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£335 GBP
View
A
Retailer 11
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£350 GBP
View
A
Retailer 12
-
£394 GBP
View
B+
Retailer 13
-
£450 GBP
View
B+
Retailer 14
-
£567 GBP
View
B+
Retailer 15
-
£593 GBP
View
Retailer 16
-
£688 GBP
View
Price last confirmed 7 days ago
B
Retailer 17
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£721 GBP
View
B
Retailer 18
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£779 GBP
View
Retailer 19
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£785 GBP
View
Price last confirmed 18 days ago
B
Retailer 20
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£842 GBP
View
B
Retailer 21
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£844 GBP
View
B
Retailer 22
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£850 GBP
View
B
Retailer 23
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£862 GBP
View
Most Expensive
B
Do Amore Diamonds
27-82C7B2555 · Nov 4
£1,296 GBP
$1,750 USD
View
23 more retailers have this diamond
Prices start from £135 GBPSave up to £1,161 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
1.21ct Radiant
£135 GBP