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Radiant|Lab Grown|IGI

1.58ct D SI1 Radiant Lab Grown Diamond

VG • D/SI1 • IGI LG474119281

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

Certificate IGI LG474119281

Diamond specifications and retailer prices

From £146 GBP
$196 USD
As of October 27, 2026
Save £1,257 GBP (90%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £1,403 GBP at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

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 SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG474119281 or 474119281. Listed at 9 retailers as of October 27, 2026, with prices from £146 to £1,403, a £1,257 spread on the same certified stone. Do Amore Diamonds lists it at £1,403. 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

1.58
Carat
D
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle47°
Pavilion angle32.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG474119281
Dimensions7.24 × 5.88 × 4.13 mm
L/W Ratio1.23
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
7.24 mm5.88 mm1.58 ctD / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG474119281
Side View
Table 61.5%Crown 47°Girdle: MED-STKPavilion 32.8°Culet: NoneDepth 70.2%

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: Oct 27
Current: £1,403 GBP|Low: £113 GBP|High: £1,403 GBP|Avg: £533 GBP
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 21, 2026
Retailer 4£146 GBP
Retailer 6£164 GBP
Retailer 5£316 GBP
Retailer 9£359 GBP
Retailer 10£421 GBP
Retailer 7£431 GBP
Retailer 3£585 GBP
Retailer 8£597 GBP
Retailer 2£807 GBP
Do Amore Diamonds£1,403 GBP

11 data points across 10 retailers

9 retailers£146 GBP to £1,403 GBP

A
Cheapest Retailer
-
£146 GBP
$196 USD
A
Retailer 2
-
£164 GBP
$220 USD
View
Final sale: no returns
A
Retailer 3
-
£169 GBP
$227 USD
View
B+
Retailer 4
-
£316 GBP
$424 USD
View
B
Retailer 5
-
£585 GBP
$784 USD
View
B
Retailer 6
-
£644 GBP
$863 USD
View
B
Retailer 7
-
£807 GBP
View
B
Retailer 8
-
£1,240 GBP
View
Most Expensive
C
Do Amore Diamonds
27-F1EF8ABCD · Oct 29
£1,403 GBP
$1,880 USD
View
8 more retailers have this diamond
Prices start from £146 GBPSave up to £1,257 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
£146 GBP