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Radiant|Lab Grown|IGI

1.21ct D VS2 Radiant Lab Grown Diamond

VG • D/VS2 • IGI LG708585435

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

Certificate IGI LG708585435

Diamond specifications and retailer prices

From £133 GBP
As of November 4, 2026
Save £636 GBP (83%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £769 GBP at MOH London · As of November 2, 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 VS2 clarity (very-slightly-included), with a very-good cut grade and certified by IGI LG708585435 or 708585435. Listed at 16 retailers as of November 2, 2026, with prices from £133 to £769, a £636 spread on the same certified stone. MOH London lists it at £769. 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
VS2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44°
Pavilion angle35.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG708585435
Dimensions5.28 × 5.28 × 3.60 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
5.28 mm5.28 mm1.21 ctD / VS2
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG708585435
Side View
Table 64.0%Crown 44°Girdle: MED-STKPavilion 35.8°Culet: NoneDepth 68.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 4
Current: £769 GBP|Low: £81 GBP|High: £822 GBP|Avg: £368 GBP|-1.1%
MOH London
Retailer 2
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November 4, 2026
Retailer 9£81 GBP
Retailer 16£133 GBP
Retailer 5£148 GBP
Retailer 3£154 GBP
Retailer 4£164 GBP
Retailer 18£164 GBP
Retailer 10£180 GBP
Retailer 17£222 GBP
Retailer 12£293 GBP
Retailer 14£303 GBP
Retailer 6£330 GBP
Retailer 15£401 GBP
Retailer 2£415 GBP
Retailer 19£529 GBP
Retailer 8£536 GBP
Retailer 7£568 GBP
Retailer 13£630 GBP
MOH London£769 GBP
Retailer 11£822 GBP

44 data points across 19 retailers

16 retailers£133 GBP to £769 GBP

A
Cheapest Retailer
-
£133 GBP
A
Retailer 2
-
£148 GBP
View
Final sale: no returns
A
Retailer 3
-
£154 GBP
View
Retailer 4
-
£164 GBP
View
Price last confirmed 11 days ago
A
Retailer 5
-
£164 GBP
View
B+
Retailer 6
-
£222 GBP
View
A
Retailer 7
-
£293 GBP
View
B+
Retailer 8
-
£303 GBP
View
B+
Retailer 9
-
£330 GBP
View
B+
Retailer 10
-
£401 GBP
View
B+
Retailer 11
-
£415 GBP
View
B+
Retailer 12
-
£529 GBP
View
Retailer 13
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£544 GBP
View
Price last confirmed 88 days ago
B
Retailer 14
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£568 GBP
View
B
Retailer 15
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£630 GBP
View
Most Expensive
B
MOH London
LG708585435 · Nov 2
£769 GBP
View
15 more retailers have this diamond
Prices start from £133 GBPSave up to £636 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
£133 GBP