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Radiant|Lab Grown|IGI

1.20ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG742543994

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

Certificate IGI LG742543994

Diamond specifications and retailer prices

From £173 GBP
As of November 4, 2026
Save £1,193 GBP (87%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £1,367 GBP at Rare Carat · As of October 30, 2026
View at Rare Carat

About this 1.2ct lab-grown radiant diamond

This 1.2ct lab-grown radiant sits in the classic one-carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG742543994 or 742543994. Listed at 22 retailers as of October 30, 2026, with prices from £173 to £1,367, a £1,193 spread on the same certified stone. Rare Carat lists it at £1,367. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.20
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.9°
Pavilion angle34.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG742543994
Dimensions7.53 × 5.24 × 3.57 mm
L/W Ratio1.44
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
7.53 mm5.24 mm1.20 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG742543994
Side View
Table 64.0%Crown 43.9°Girdle: Slightly ThickPavilion 34.6°Culet: NoneDepth 68.1%

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: £1,367 GBP|Low: £166 GBP|High: £1,800 GBP|Avg: £523 GBP|-1.6%
Rare Carat
Retailer 2
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Retailer 10
Retailer 11
Retailer 12
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Retailer 16
November 4, 2026
Retailer 15£173 GBP
Retailer 8£193 GBP
Retailer 5£201 GBP
Retailer 6£215 GBP
Retailer 16£215 GBP
Retailer 12£356 GBP
Retailer 4£364 GBP
Retailer 10£370 GBP
Retailer 7£392 GBP
Retailer 2£401 GBP
Retailer 9£525 GBP
Retailer 3£690 GBP
Retailer 14£692 GBP
Retailer 11£859 GBP
Retailer 13£1,304 GBP
Rare Carat£1,367 GBP

44 data points across 16 retailers

22 retailers£173 GBP to £1,367 GBP

A
Cheapest Retailer
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£173 GBP
A
Retailer 2
-
£193 GBP
View
Final sale: no returns
A
Retailer 3
-
£201 GBP
View
Retailer 4
-
£215 GBP
View
Price last confirmed 10 days ago
A
Retailer 5
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£215 GBP
View
A
Retailer 6
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£237 GBP
View
A
Retailer 7
-
£356 GBP
View
A
Retailer 8
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£364 GBP
View
A
Retailer 9
-
£370 GBP
View
A
Retailer 10
-
£392 GBP
View
A
Retailer 11
-
£401 GBP
View
A
Retailer 12
-
£525 GBP
View
B+
Retailer 13
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£557 GBP
View
B+
Retailer 14
-
£690 GBP
View
B+
Retailer 15
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£692 GBP
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B+
Retailer 16
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£693 GBP
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B+
Retailer 17
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£728 GBP
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B+
Retailer 18
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£835 GBP
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B+
Retailer 19
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£859 GBP
View
B
Retailer 20
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£963 GBP
View
B
Retailer 21
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£1,304 GBP
View
Most Expensive
B
Rare Carat
A2-315A · Oct 21
£1,367 GBP
$1,845 USD
View
21 more retailers have this diamond
Prices start from £173 GBPSave up to £1,193 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
1.20ct Radiant
£173 GBP