Radiant|Lab Grown|IGI

1.50ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG729567702

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

Certificate IGI LG729567702

Diamond specifications and retailer prices

From $289 USD
As of October 30, 2026
Save $2,271 USD (89%) vs most expensive(unlock to see where)
30 retailers carry this diamond
Most expensive: $3,240 USD at Brilliant Earth · As of October 22, 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 LG729567702 or 729567702. Listed at 30 retailers as of October 30, 2026, with a 786% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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 angle42.6°
Pavilion angle32.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG729567702
Dimensions8.48 × 5.69 × 3.56 mm
L/W Ratio1.49
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
8.48 mm5.69 mm1.50 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG729567702
Side View
Table 63.0%Crown 42.6°Girdle: MediumPavilion 32.4°Culet: NoneDepth 62.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $3,240 USD|Low: $289 USD|High: $3,240 USD|Avg: $1,151 USD
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
November 1, 2026
Retailer 3$289 USD
Retailer 18$344 USD
Retailer 22$510 USD
Retailer 12$525 USD
Retailer 4$555 USD
Retailer 10$618 USD
Retailer 13$643 USD
Retailer 17$679 USD
Retailer 2$705 USD
Retailer 6$778 USD
Retailer 11$891 USD
Retailer 16$920 USD
Retailer 21$1,099 USD
Retailer 8$1,376 USD
Retailer 14$1,432 USD
Retailer 7$1,473 USD
Retailer 15$1,530 USD
Retailer 20$1,591 USD
Retailer 5$1,645 USD
Retailer 19$2,455 USD
Retailer 9$2,560 USD
Brilliant Earth$3,240 USD

39 data points across 22 retailers

30 retailers$289 USD to $2,560 USD

A
Cheapest Retailer
-
$289 USD
Retailer 2
-
$289 USD
View
Price last confirmed 24 days ago
Retailer 3
-
$307 USD
View
Price last confirmed 32 days ago
A
Retailer 4
-
$344 USD
View
Final sale: no returns
Retailer 5
-
$356 USD
View
Price last confirmed 35 days ago
Retailer 6
-
$358 USD
View
Price last confirmed 29 days ago
Retailer 7
-
$375 USD
View
Price last confirmed 34 days ago
A
Retailer 8
-
$510 USD
View
A
Retailer 9
-
$525 USD
HK$4,100 HKD
View
A
Retailer 10
-
$555 USD
View
A
Retailer 11
-
$618 USD
View
A
Retailer 12
-
$643 USD
€612 EUR
View
A
Retailer 13
-
$679 USD
ZAR 10,965 ZAR
View
A
Retailer 14
-
$705 USD
£555 GBP
View
A
Retailer 15
-
$778 USD
View
A
Retailer 16
-
$891 USD
View
A
Retailer 17
-
$920 USD
A$1,416 AUD
View
B+
Retailer 18
-
$1,099 USD
View
B+
Retailer 19
-
$1,270 USD
View
Retailer 20
-
$1,270 USD
View
Price last confirmed 22 days ago
Retailer 21
-
$1,350 USD
View
Price last confirmed 32 days ago
B+
Retailer 22
-
$1,376 USD
View
B+
Retailer 23
-
$1,432 USD
View
B+
Retailer 24
-
$1,473 USD
View
B+
Retailer 25
-
$1,530 USD
SGD 2,067 SGD
View
Retailer 26
-
$1,591 USD
£1,253 GBP
View
Price last confirmed 11 days ago
Retailer 27
-
$1,645 USD
A$2,530 AUD
View
Price last confirmed 27 days ago
B
Retailer 28
-
$2,455 USD
View
B
Retailer 29
-
$2,560 USD
View
Most Expensive
Brilliant Earth
16223215Y · Oct 22
$3,240 USD
View
Price last confirmed 10 days ago
29 more retailers have this diamond
Prices start from $289 USDSave up to $2,271 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