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 $289 USD
As of October 30, 2026
Save $2,521 USD (90%) vs most expensive(unlock to see where)
31 retailers carry this diamond
Most expensive: $2,810 USD 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 $289 to $2,810, a $2,521 spread on the same certified stone. Brilliant Earth lists it at $2,810. 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: $2,810 USD|Low: $289 USD|High: $3,240 USD|Avg: $1,132 USD|-13.3%
Brilliant Earth
Retailer 2
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Retailer 22
November 1, 2026
Retailer 3$289 USD
Retailer 20$344 USD
Retailer 19$510 USD
Retailer 11$525 USD
Retailer 4$555 USD
Retailer 9$618 USD
Retailer 16$643 USD
Retailer 18$679 USD
Retailer 13$705 USD
Retailer 5$778 USD
Retailer 10$891 USD
Retailer 17$920 USD
Retailer 22$1,099 USD
Retailer 7$1,376 USD
Retailer 12$1,432 USD
Retailer 6$1,473 USD
Retailer 14$1,530 USD
Retailer 2$1,582 USD
Retailer 15$1,637 USD
Retailer 21$2,455 USD
Retailer 8$2,560 USD
Brilliant Earth$2,810 USD

38 data points across 22 retailers

31 retailers$289 USD to $2,810 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
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$307 USD
View
Price last confirmed 32 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
A
Retailer 8
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$510 USD
View
A
Retailer 9
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$525 USD
HK$4,100 HKD
View
A
Retailer 10
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$555 USD
View
A
Retailer 11
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$618 USD
View
A
Retailer 12
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$643 USD
€612 EUR
View
A
Retailer 13
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$679 USD
ZAR 10,965 ZAR
View
A
Retailer 14
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$705 USD
£555 GBP
View
A
Retailer 15
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$778 USD
View
A
Retailer 16
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$891 USD
View
A
Retailer 17
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$920 USD
A$1,416 AUD
View
B+
Retailer 18
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$1,099 USD
View
B+
Retailer 19
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$1,270 USD
View
Retailer 20
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$1,270 USD
View
Price last confirmed 22 days ago
Retailer 21
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$1,350 USD
View
Price last confirmed 32 days ago
B+
Retailer 22
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$1,376 USD
View
B+
Retailer 23
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$1,432 USD
View
B+
Retailer 24
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$1,473 USD
View
B+
Retailer 25
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$1,530 USD
SGD 2,067 SGD
View
B+
Retailer 26
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$1,582 USD
£1,246 GBP
View
Retailer 27
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$1,637 USD
A$2,519 AUD
View
Price last confirmed 34 days ago
B
Retailer 28
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$2,455 USD
View
Retailer 29
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$2,525 USD
View
Price last confirmed 34 days ago
B
Retailer 30
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$2,560 USD
View
Most Expensive
B
Brilliant Earth
16223063Y · Nov 1
$2,810 USD
View
30 more retailers have this diamond
Prices start from $289 USDSave up to $2,521 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