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Radiant|Lab Grown|IGI

1.58ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG743546531

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

Certificate IGI LG743546531

Diamond specifications and retailer prices

From £249 GBP
As of November 2, 2026
Save £1,966 GBP (89%) vs most expensive(unlock to see where)
29 retailers carry this diamond
Most expensive: £2,215 GBP at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

About this 1.58ct lab-grown radiant diamond

This 1.58ct lab-grown radiant sits in the one-and-a-half to two carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG743546531 or 743546531. Listed at 29 retailers as of November 2, 2026, with prices from £249 to £2,215, a £1,966 spread on the same certified stone. Brilliant Earth lists it at £2,215. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.58
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.4°
Pavilion angle33.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG743546531
Dimensions8.53 × 5.73 × 3.79 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
8.53 mm5.73 mm1.58 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG743546531
Side View
Table 64.0%Crown 39.4°Girdle: MediumPavilion 33.4°Culet: NoneDepth 66.1%

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 2
Current: £2,215 GBP|Low: £249 GBP|High: £3,221 GBP|Avg: £917 GBP|-31.3%
Brilliant Earth
Retailer 2
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Retailer 22
November 4, 2026
Retailer 8£249 GBP
Retailer 5£279 GBP
Retailer 14£353 GBP
Retailer 2£421 GBP
Retailer 9£434 GBP
Retailer 16£481 GBP
Retailer 12£502 GBP
Retailer 21£532 GBP
Retailer 20£547 GBP
Retailer 18£668 GBP
Retailer 4£720 GBP
Retailer 10£824 GBP
Retailer 7£906 GBP
Retailer 19£987 GBP
Retailer 15£1,031 GBP
Retailer 17£1,139 GBP
Retailer 11£1,209 GBP
Retailer 3£1,244 GBP
Retailer 22£1,268 GBP
Retailer 13£1,317 GBP
Retailer 6£1,920 GBP
Brilliant Earth£2,215 GBP

36 data points across 22 retailers

29 retailers£249 GBP to £2,215 GBP

A
Cheapest Retailer
-
£249 GBP
Retailer 2
-
£265 GBP
View
Price last confirmed 35 days ago
A
Retailer 3
-
£279 GBP
View
Final sale: no returns
Retailer 4
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£307 GBP
View
Price last confirmed 38 days ago
Retailer 5
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£309 GBP
View
Price last confirmed 32 days ago
Retailer 6
-
£324 GBP
View
Price last confirmed 36 days ago
A
Retailer 7
-
£353 GBP
View
A
Retailer 8
-
£421 GBP
View
A
Retailer 9
-
£434 GBP
View
A
Retailer 10
-
£481 GBP
View
A
Retailer 11
-
£502 GBP
View
A
Retailer 12
-
£532 GBP
View
A
Retailer 13
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£547 GBP
View
A
Retailer 14
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£668 GBP
View
A
Retailer 15
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£720 GBP
View
B+
Retailer 16
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£824 GBP
View
B+
Retailer 17
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£906 GBP
View
B+
Retailer 18
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£987 GBP
View
Retailer 19
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£993 GBP
View
Price last confirmed 25 days ago
B+
Retailer 20
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£993 GBP
View
B+
Retailer 21
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£1,031 GBP
View
Retailer 22
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£1,056 GBP
View
Price last confirmed 35 days ago
B+
Retailer 23
-
£1,139 GBP
View
B+
Retailer 24
-
£1,209 GBP
View
B+
Retailer 25
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£1,244 GBP
View
B+
Retailer 26
-
£1,268 GBP
View
B+
Retailer 27
-
£1,317 GBP
View
B
Retailer 28
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£1,920 GBP
View
Most Expensive
B
Brilliant Earth
16656243A · Nov 2
£2,215 GBP
$2,970 USD
View
28 more retailers have this diamond
Prices start from £249 GBPSave up to £1,966 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
1.58ct Radiant
£249 GBP