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Radiant|Lab Grown|IGI

1.21ct D VVS1 Radiant Lab Grown Diamond

EX • D/VVS1 • IGI LG754508808

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

Certificate IGI LG754508808

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)
29 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 LG754508808 or 754508808. Listed at 29 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.6°
Pavilion angle32.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG754508808
Dimensions5.24 × 5.24 × 3.47 mm
L/W Ratio1.00
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
5.24 mm5.24 mm1.21 ctD / VVS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG754508808
Side View
Table 62.0%Crown 38.6°Girdle: MediumPavilion 32.2°Culet: NoneDepth 66.2%

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: £1,296 GBP|Low: £135 GBP|High: £1,296 GBP|Avg: £470 GBP
Do Amore Diamonds
Retailer 2
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Retailer 18
November 5, 2026
Retailer 5£135 GBP
Retailer 8£153 GBP
Retailer 7£156 GBP
Retailer 9£165 GBP
Retailer 18£211 GBP
Retailer 6£261 GBP
Retailer 14£313 GBP
Retailer 12£318 GBP
Retailer 2£335 GBP
Retailer 10£350 GBP
Retailer 11£450 GBP
Retailer 3£567 GBP
Retailer 16£688 GBP
Retailer 17£785 GBP
Retailer 4£842 GBP
Retailer 15£844 GBP
Retailer 13£862 GBP
Do Amore Diamonds£1,296 GBP

45 data points across 18 retailers

29 retailers£135 GBP to £1,296 GBP

A
Cheapest Retailer
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£135 GBP
Retailer 2
-
£135 GBP
View
Price last confirmed 28 days ago
Retailer 3
-
£135 GBP
View
Price last confirmed 36 days ago
A
Retailer 4
-
£153 GBP
View
Final sale: no returns
Retailer 5
-
£156 GBP
View
Price last confirmed 39 days ago
Retailer 6
-
£165 GBP
View
Price last confirmed 37 days ago
Retailer 7
-
£167 GBP
View
Price last confirmed 33 days ago
B+
Retailer 8
-
£261 GBP
View
A
Retailer 9
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£265 GBP
View
A
Retailer 10
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£313 GBP
View
A
Retailer 11
-
£318 GBP
View
Retailer 12
-
£330 GBP
View
Price last confirmed 21 days ago
A
Retailer 13
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£333 GBP
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A
Retailer 14
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£335 GBP
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A
Retailer 15
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£350 GBP
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A
Retailer 16
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£394 GBP
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B+
Retailer 17
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£450 GBP
View
B+
Retailer 18
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£567 GBP
View
B+
Retailer 19
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£593 GBP
View
Retailer 20
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£593 GBP
View
Price last confirmed 36 days ago
Retailer 21
-
£593 GBP
View
Price last confirmed 26 days ago
Retailer 22
-
£688 GBP
View
Price last confirmed 7 days ago
B
Retailer 23
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£721 GBP
View
B
Retailer 24
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£779 GBP
View
Retailer 25
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£785 GBP
View
Price last confirmed 18 days ago
B
Retailer 26
-
£842 GBP
View
B
Retailer 27
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£844 GBP
View
B
Retailer 28
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£862 GBP
View
Most Expensive
B
Do Amore Diamonds
27-69E1018D9 · Nov 4
£1,296 GBP
$1,750 USD
View
28 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