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Radiant|Lab Grown|IGI

1.21ct D VVS1 Radiant Lab Grown Diamond

VG • D/VVS1 • IGI LG671423914

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

Certificate IGI LG671423914

Diamond specifications and retailer prices

From £210 GBP
As of November 4, 2026
Save £832 GBP (80%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £1,042 GBP at MOH London · As of November 5, 2026
View at MOH London

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 very-good cut grade and certified by IGI LG671423914 or 671423914. Listed at 21 retailers as of November 4, 2026, with prices from £210 to £1,042, a £832 spread on the same certified stone. MOH London lists it at £1,042. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.21
Carat
D
Colour
VVS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38°
Pavilion angle36.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG671423914
Dimensions7.74 × 5.20 × 3.69 mm
L/W Ratio1.49
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
7.74 mm5.20 mm1.21 ctD / VVS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG671423914
Side View
Table 62.0%Crown 38°Girdle: MediumPavilion 36.2°Culet: NoneDepth 71.0%

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: £1,042 GBP|Low: £202 GBP|High: £1,057 GBP|Avg: £576 GBP|-0.3%
MOH London
Retailer 2
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Retailer 22
November 5, 2026
Retailer 21£210 GBP
Retailer 19£236 GBP
Retailer 7£244 GBP
Retailer 6£261 GBP
Retailer 22£261 GBP
Retailer 2£296 GBP
Retailer 10£341 GBP
Retailer 16£378 GBP
Retailer 5£429 GBP
Retailer 8£445 GBP
Retailer 13£450 GBP
Retailer 11£451 GBP
Retailer 12£468 GBP
Retailer 3£725 GBP
Retailer 18£801 GBP
Retailer 17£833 GBP
Retailer 4£839 GBP
Retailer 15£850 GBP
Retailer 9£948 GBP
Retailer 14£986 GBP
Retailer 20£1,018 GBP
MOH London£1,042 GBP

31 data points across 22 retailers

21 retailers£210 GBP to £1,042 GBP

A
Cheapest Retailer
-
£210 GBP
A
Retailer 2
-
£236 GBP
View
Final sale: no returns
A
Retailer 3
-
£244 GBP
View
Retailer 4
-
£261 GBP
View
Price last confirmed 11 days ago
A
Retailer 5
-
£261 GBP
View
A
Retailer 6
-
£296 GBP
View
Retailer 7
-
£341 GBP
View
Price last confirmed 30 days ago
B+
Retailer 8
-
£378 GBP
View
B+
Retailer 9
-
£429 GBP
View
B+
Retailer 10
-
£445 GBP
View
B+
Retailer 11
-
£450 GBP
View
B+
Retailer 12
-
£451 GBP
View
Retailer 13
-
£725 GBP
View
Price last confirmed 11 days ago
B
Retailer 14
-
£801 GBP
View
Retailer 15
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£833 GBP
View
Price last confirmed 18 days ago
B
Retailer 16
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£839 GBP
View
B
Retailer 17
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£850 GBP
View
Retailer 18
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£986 GBP
View
Price last confirmed 29 days ago
B
Retailer 19
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£990 GBP
View
B
Retailer 20
-
£1,018 GBP
View
Most Expensive
B
MOH London
LG671423914 · Nov 5
£1,042 GBP
View
20 more retailers have this diamond
Prices start from £210 GBPSave up to £832 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
£210 GBP