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 €259 EUR
$289 USD
As of October 30, 2026
Save €2,257 EUR (90%) vs most expensive(unlock to see where)
31 retailers carry this diamond
Most expensive: €2,515 EUR 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 €259 to €2,515, a €2,257 spread on the same certified stone. Brilliant Earth lists it at €2,515. 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
Color
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: €2,515 EUR|Low: €259 EUR|High: €2,900 EUR|Avg: €1,013 EUR|-13.3%
Brilliant Earth
Retailer 2
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Retailer 22
November 1, 2026
Retailer 3€259 EUR
Retailer 20€308 EUR
Retailer 19€456 EUR
Retailer 11€470 EUR
Retailer 4€497 EUR
Retailer 9€553 EUR
Retailer 16€575 EUR
Retailer 18€608 EUR
Retailer 13€631 EUR
Retailer 5€696 EUR
Retailer 10€798 EUR
Retailer 17€824 EUR
Retailer 22€984 EUR
Retailer 7€1,232 EUR
Retailer 12€1,282 EUR
Retailer 6€1,318 EUR
Retailer 14€1,369 EUR
Retailer 2€1,416 EUR
Retailer 15€1,466 EUR
Retailer 21€2,197 EUR
Retailer 8€2,291 EUR
Brilliant Earth€2,515 EUR

38 data points across 22 retailers

31 retailers€259 EUR to €2,515 EUR

A
Cheapest Retailer
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€259 EUR
$289 USD
Retailer 2
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€259 EUR
$289 USD
View
Price last confirmed 24 days ago
Retailer 3
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€275 EUR
$307 USD
View
Price last confirmed 32 days ago
A
Retailer 4
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€308 EUR
$344 USD
View
Final sale: no returns
Retailer 5
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€319 EUR
$356 USD
View
Price last confirmed 35 days ago
Retailer 6
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€320 EUR
$358 USD
View
Price last confirmed 29 days ago
Retailer 7
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€336 EUR
$375 USD
View
Price last confirmed 34 days ago
A
Retailer 8
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€456 EUR
$510 USD
View
A
Retailer 9
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€470 EUR
HK$4,100 HKD
View
A
Retailer 10
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€497 EUR
$555 USD
View
A
Retailer 11
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€553 EUR
$618 USD
View
A
Retailer 12
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€575 EUR
View
A
Retailer 13
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€608 EUR
ZAR 10,965 ZAR
View
A
Retailer 14
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€631 EUR
£555 GBP
View
A
Retailer 15
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€696 EUR
$778 USD
View
A
Retailer 16
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€798 EUR
$891 USD
View
A
Retailer 17
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€824 EUR
A$1,416 AUD
View
B+
Retailer 18
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€984 EUR
$1,099 USD
View
B+
Retailer 19
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€1,137 EUR
$1,270 USD
View
Retailer 20
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€1,137 EUR
$1,270 USD
View
Price last confirmed 22 days ago
Retailer 21
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€1,208 EUR
$1,350 USD
View
Price last confirmed 32 days ago
B+
Retailer 22
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€1,232 EUR
$1,376 USD
View
B+
Retailer 23
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€1,282 EUR
$1,432 USD
View
B+
Retailer 24
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€1,318 EUR
$1,473 USD
View
B+
Retailer 25
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€1,369 EUR
SGD 2,067 SGD
View
B+
Retailer 26
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€1,416 EUR
£1,246 GBP
View
Retailer 27
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€1,466 EUR
A$2,519 AUD
View
Price last confirmed 34 days ago
B
Retailer 28
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€2,197 EUR
$2,455 USD
View
Retailer 29
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€2,260 EUR
$2,525 USD
View
Price last confirmed 34 days ago
B
Retailer 30
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€2,291 EUR
$2,560 USD
View
Most Expensive
B
Brilliant Earth
16223063Y · Nov 1
€2,515 EUR
$2,810 USD
View
30 more retailers have this diamond
Prices start from €259 EURSave up to €2,257 EUR

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
€259 EUR