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Radiant|Lab Grown|IGI

1.21ct D IF Radiant Lab Grown Diamond

VG • D/IF • IGI LG754594892

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

Certificate IGI LG754594892

Diamond specifications and retailer prices

From £164 GBP
As of November 4, 2026
Save £1,496 GBP (90%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: £1,659 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 IF clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG754594892 or 754594892. Listed at 25 retailers as of November 4, 2026, with prices from £164 to £1,659, a £1,496 spread on the same certified stone. Do Amore Diamonds lists it at £1,659. 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
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.9°
Pavilion angle32.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG754594892
Dimensions7.73 × 5.26 × 3.45 mm
L/W Ratio1.47
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
7.73 mm5.26 mm1.21 ctD / IF
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG754594892
Side View
Table 62.0%Crown 39.9°Girdle: Slightly ThickPavilion 32.4°Culet: NoneDepth 65.6%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 4
Current: £1,659 GBP|Low: £164 GBP|High: £1,659 GBP|Avg: £692 GBP
Do Amore Diamonds
Retailer 2
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November 4, 2026
Retailer 14£164 GBP
Retailer 11£215 GBP
Retailer 13£230 GBP
Retailer 2£313 GBP
Retailer 18£317 GBP
Retailer 3£374 GBP
Retailer 6£409 GBP
Retailer 20£421 GBP
Retailer 4£493 GBP
Retailer 9£576 GBP
Retailer 16£655 GBP
Retailer 15£721 GBP
Retailer 5£847 GBP
Retailer 12£900 GBP
Retailer 19£908 GBP
Retailer 17£933 GBP
Retailer 7£949 GBP
Retailer 8£1,304 GBP
Retailer 10£1,367 GBP
Do Amore Diamonds£1,659 GBP

32 data points across 20 retailers

25 retailers£164 GBP to £1,659 GBP

A
Cheapest Retailer
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£164 GBP
Retailer 2
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£201 GBP
View
Price last confirmed 38 days ago
A
Retailer 3
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£203 GBP
View
Final sale: no returns
Retailer 4
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£215 GBP
View
Price last confirmed 25 days ago
A
Retailer 5
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£230 GBP
View
A
Retailer 6
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£313 GBP
View
A
Retailer 7
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£317 GBP
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A
Retailer 8
-
£374 GBP
View
A
Retailer 9
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£392 GBP
View
A
Retailer 10
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£409 GBP
View
A
Retailer 11
-
£421 GBP
View
A
Retailer 12
-
£442 GBP
View
B+
Retailer 13
-
£493 GBP
View
Retailer 14
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£576 GBP
View
Price last confirmed 7 days ago
B+
Retailer 15
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£655 GBP
View
B+
Retailer 16
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£721 GBP
View
Retailer 17
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£761 GBP
View
Price last confirmed 25 days ago
B
Retailer 18
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£847 GBP
View
Retailer 19
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£900 GBP
View
Price last confirmed 27 days ago
B
Retailer 20
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£908 GBP
View
B
Retailer 21
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£933 GBP
View
B
Retailer 22
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£949 GBP
View
B
Retailer 23
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£1,304 GBP
View
Retailer 24
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£1,367 GBP
View
Price last confirmed 17 days ago
Most Expensive
B
Do Amore Diamonds
27-B15119328 · Nov 4
£1,659 GBP
$2,240 USD
View
24 more retailers have this diamond
Prices start from £164 GBPSave up to £1,496 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
£164 GBP