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Radiant|Lab Grown|IGI

1.50ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG728577504

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

Certificate IGI LG728577504

Diamond specifications and retailer prices

From £215 GBP
$289 USD
As of October 30, 2026
Save £1,879 GBP (90%) vs most expensive(unlock to see where)
31 retailers carry this diamond
Most expensive: £2,094 GBP at Brilliant Earth · As of November 1, 2026
View at Brilliant Earth

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 IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG728577504 or 728577504. Listed at 31 retailers as of October 30, 2026, with prices from £215 to £2,094, a £1,879 spread on the same certified stone. Brilliant Earth lists it at £2,094. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.50
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.9°
Pavilion angle33.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG728577504
Dimensions7.97 × 5.86 × 3.78 mm
L/W Ratio1.36
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
7.97 mm5.86 mm1.50 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG728577504
Side View
Table 62.0%Crown 41.9°Girdle: MediumPavilion 33.5°Culet: NoneDepth 64.5%

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 30
Current: £2,094 GBP|Low: £215 GBP|High: £2,414 GBP|Avg: £848 GBP|-13.3%
Brilliant Earth
Retailer 2
Retailer 3
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Retailer 7
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Retailer 12
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Retailer 17
Retailer 18
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Retailer 21
Retailer 22
November 2, 2026
Retailer 3£215 GBP
Retailer 20£256 GBP
Retailer 19£380 GBP
Retailer 11£391 GBP
Retailer 4£414 GBP
Retailer 9£461 GBP
Retailer 17£479 GBP
Retailer 13£508 GBP
Retailer 2£525 GBP
Retailer 5£580 GBP
Retailer 10£664 GBP
Retailer 18£686 GBP
Retailer 22£819 GBP
Retailer 7£1,025 GBP
Retailer 12£1,067 GBP
Retailer 6£1,097 GBP
Retailer 14£1,140 GBP
Retailer 16£1,179 GBP
Retailer 15£1,220 GBP
Retailer 21£1,829 GBP
Retailer 8£1,908 GBP
Brilliant Earth£2,094 GBP

38 data points across 22 retailers

31 retailers£215 GBP to £2,094 GBP

A
Cheapest Retailer
-
£215 GBP
$289 USD
Retailer 2
-
£215 GBP
$289 USD
View
Price last confirmed 25 days ago
Retailer 3
-
£229 GBP
$307 USD
View
Price last confirmed 34 days ago
A
Retailer 4
-
£256 GBP
$344 USD
View
Final sale: no returns
Retailer 5
-
£265 GBP
$356 USD
View
Price last confirmed 36 days ago
Retailer 6
-
£267 GBP
$358 USD
View
Price last confirmed 30 days ago
Retailer 7
-
£279 GBP
$375 USD
View
Price last confirmed 35 days ago
A
Retailer 8
-
£380 GBP
$510 USD
View
A
Retailer 9
-
£391 GBP
HK$4,100 HKD
View
A
Retailer 10
-
£414 GBP
$555 USD
View
A
Retailer 11
-
£461 GBP
$618 USD
View
A
Retailer 12
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£479 GBP
€612 EUR
View
A
Retailer 13
-
£508 GBP
ZAR 11,004 ZAR
View
A
Retailer 14
-
£525 GBP
View
A
Retailer 15
-
£580 GBP
$778 USD
View
A
Retailer 16
-
£664 GBP
$891 USD
View
A
Retailer 17
-
£686 GBP
A$1,416 AUD
View
B+
Retailer 18
-
£819 GBP
$1,099 USD
View
B+
Retailer 19
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£946 GBP
$1,270 USD
View
Retailer 20
-
£946 GBP
$1,270 USD
View
Price last confirmed 23 days ago
Retailer 21
-
£1,006 GBP
$1,350 USD
View
Price last confirmed 33 days ago
B+
Retailer 22
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£1,025 GBP
$1,376 USD
View
B+
Retailer 23
-
£1,067 GBP
$1,432 USD
View
B+
Retailer 24
-
£1,097 GBP
$1,473 USD
View
B+
Retailer 25
-
£1,140 GBP
SGD 2,067 SGD
View
B+
Retailer 26
-
£1,179 GBP
View
Retailer 27
-
£1,220 GBP
A$2,519 AUD
View
Price last confirmed 35 days ago
B
Retailer 28
-
£1,829 GBP
$2,455 USD
View
Retailer 29
-
£1,882 GBP
$2,525 USD
View
Price last confirmed 35 days ago
B
Retailer 30
-
£1,908 GBP
$2,560 USD
View
Most Expensive
B
Brilliant Earth
16223063Y · Nov 1
£2,094 GBP
$2,810 USD
View
30 more retailers have this diamond
Prices start from £215 GBPSave up to £1,879 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
£215 GBP