Radiant|Lab Grown|IGI

1.50ct D IF Radiant Lab Grown Diamond

EX • D/IF • IGI LG743593987

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

Certificate IGI LG743593987

Diamond specifications and retailer prices

From $289 USD
As of October 30, 2026
Save $2,951 USD (91%) vs most expensive(unlock to see where)
31 retailers carry this diamond
Most expensive: $3,240 USD at Brilliant Earth · As of October 28, 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 LG743593987 or 743593987. Listed at 31 retailers as of October 28, 2026, with prices from $289 to $3,240, a $2,951 spread on the same certified stone. Brilliant Earth lists it at $3,240. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.6°
Pavilion angle31.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG743593987
Dimensions5.62 × 5.62 × 3.66 mm
L/W Ratio1.00
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
5.62 mm5.62 mm1.50 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG743593987
Side View
Table 60.0%Crown 38.6°Girdle: MED-STKPavilion 31.7°Culet: NoneDepth 65.1%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: $3,240 USD|Low: $289 USD|High: $3,240 USD|Avg: $1,044 USD
Brilliant Earth
Retailer 2
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Retailer 25
November 1, 2026
Retailer 6$289 USD
Retailer 9$344 USD
Retailer 17$356 USD
Retailer 18$375 USD
Retailer 23$420 USD
Retailer 25$510 USD
Retailer 14$525 USD
Retailer 7$555 USD
Retailer 11$618 USD
Retailer 19$643 USD
Retailer 21$679 USD
Retailer 13$705 USD
Retailer 8$778 USD
Retailer 12$891 USD
Retailer 20$920 USD
Retailer 24$1,099 USD
Retailer 3$1,376 USD
Retailer 15$1,432 USD
Retailer 5$1,473 USD
Retailer 16$1,530 USD
Retailer 2$1,582 USD
Retailer 10$1,630 USD
Retailer 22$2,455 USD
Retailer 4$2,560 USD
Brilliant Earth$3,240 USD

38 data points across 25 retailers

31 retailers$289 USD to $3,240 USD

A
Cheapest Retailer
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$289 USD
Retailer 2
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$289 USD
View
Price last confirmed 24 days ago
Retailer 3
-
$307 USD
View
Price last confirmed 33 days ago
A
Retailer 4
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$344 USD
View
Final sale: no returns
Retailer 5
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$356 USD
View
Price last confirmed 35 days ago
Retailer 6
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$358 USD
View
Price last confirmed 29 days ago
Retailer 7
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$375 USD
View
Price last confirmed 34 days ago
Retailer 8
-
$420 USD
£331 GBP
View
Price last confirmed 15 days ago
A
Retailer 9
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$510 USD
View
A
Retailer 10
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$525 USD
HK$4,100 HKD
View
A
Retailer 11
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$555 USD
View
A
Retailer 12
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$618 USD
View
A
Retailer 13
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$643 USD
€612 EUR
View
A
Retailer 14
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$679 USD
ZAR 10,965 ZAR
View
A
Retailer 15
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$705 USD
£555 GBP
View
A
Retailer 16
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$778 USD
View
A
Retailer 17
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$891 USD
View
A
Retailer 18
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$920 USD
A$1,416 AUD
View
B+
Retailer 19
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$1,099 USD
View
B+
Retailer 20
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$1,270 USD
View
Retailer 21
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$1,270 USD
View
Price last confirmed 22 days ago
Retailer 22
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$1,350 USD
View
Price last confirmed 32 days ago
B+
Retailer 23
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$1,376 USD
View
B+
Retailer 24
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$1,432 USD
View
B+
Retailer 25
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$1,473 USD
View
B+
Retailer 26
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$1,530 USD
SGD 2,067 SGD
View
B+
Retailer 27
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$1,582 USD
£1,246 GBP
View
Retailer 28
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$1,630 USD
A$2,508 AUD
View
Price last confirmed 29 days ago
B
Retailer 29
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$2,455 USD
View
B
Retailer 30
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$2,560 USD
View
Most Expensive
B
Brilliant Earth
17457020Y · Oct 28
$3,240 USD
View
30 more retailers have this diamond
Prices start from $289 USDSave up to $2,951 USD

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
$289 USD