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Radiant|Lab Grown|IGI

1.50ct D SI1 Radiant Lab Grown Diamond

ID • D/SI1 • IGI LG474119436

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

Certificate IGI LG474119436

Diamond specifications and retailer prices

From £140 GBP
$187 USD
As of October 27, 2026
Save £1,204 GBP (90%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £1,343 GBP at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 1.5ct lab-grown radiant diamond

This 1.5ct 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 top-tier cut grade and certified by IGI LG474119436 or 474119436. Listed at 9 retailers as of October 27, 2026, with prices from £140 to £1,343, a £1,204 spread on the same certified stone. Do Amore Diamonds lists it at £1,343. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.50
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.8°
Pavilion angle32.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG474119436
Dimensions7.25 × 5.78 × 3.96 mm
L/W Ratio1.25
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
7.25 mm5.78 mm1.50 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG474119436
Side View
Table 68.5%Crown 44.8°Girdle: MED-STKPavilion 32.3°Culet: NoneDepth 68.5%

Caratlytics Score

How it works →
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: £1,343 GBP|Low: £108 GBP|High: £1,358 GBP|Avg: £552 GBP|-1.1%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 29, 2026
Retailer 6£140 GBP
Retailer 8£157 GBP
Retailer 7£305 GBP
Retailer 3£341 GBP
Retailer 9£391 GBP
Retailer 12£410 GBP
Retailer 4£474 GBP
Retailer 5£560 GBP
Retailer 10£578 GBP
Retailer 2£772 GBP
Retailer 11£1,037 GBP
Do Amore Diamonds£1,343 GBP

15 data points across 12 retailers

9 retailers£140 GBP to £1,343 GBP

A
Cheapest Retailer
-
£140 GBP
$187 USD
A
Retailer 2
-
£157 GBP
$210 USD
View
Final sale: no returns
A
Retailer 3
-
£162 GBP
$217 USD
View
B+
Retailer 4
-
£305 GBP
$408 USD
View
B
Retailer 5
-
£560 GBP
$750 USD
View
B
Retailer 6
-
£616 GBP
$825 USD
View
B
Retailer 7
-
£679 GBP
View
B
Retailer 8
-
£772 GBP
View
Most Expensive
B
Do Amore Diamonds
27-E16B57DA1 · Oct 29
£1,343 GBP
$1,800 USD
View
8 more retailers have this diamond
Prices start from £140 GBPSave up to £1,204 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
1.50ct Radiant
£140 GBP