Radiant|Lab Grown|IGI

1.55ct D IF Radiant Lab Grown Diamond

EX • D/IF • IGI LG744515287

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

Certificate IGI LG744515287

Diamond specifications and retailer prices

From $397 CAD
As of November 4, 2026
Save $3,282 CAD (89%) vs most expensive(unlock to see where)
32 retailers carry this diamond
Most expensive: $4,668 CAD at Brilliant Earth · As of October 17, 2026
View at Brilliant Earth

About this 1.55ct lab-grown radiant diamond

This 1.55ct 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 LG744515287 or 744515287. Listed at 32 retailers as of November 4, 2026, with a 826% 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

1.55
Carat
D
Color
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.3°
Pavilion angle33.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG744515287
Dimensions5.70 × 5.70 × 3.76 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
5.70 mm5.70 mm1.55 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG744515287
Side View
Table 63.0%Crown 42.3°Girdle: Slightly ThickPavilion 33.9°Culet: NoneDepth 66.0%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 4
Current: $4,668 CAD|Low: $397 CAD|High: $4,668 CAD|Avg: $1,684 CAD
Brilliant Earth
Retailer 2
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Retailer 23
November 5, 2026
Retailer 20$397 CAD
Retailer 16$496 CAD
Retailer 19$574 CAD
Retailer 17$711 CAD
Retailer 18$730 CAD
Retailer 22$766 CAD
Retailer 6$886 CAD
Retailer 2$960 CAD
Retailer 10$977 CAD
Retailer 15$1,152 CAD
Retailer 8$1,225 CAD
Retailer 5$1,278 CAD
Retailer 23$1,515 CAD
Retailer 21$1,750 CAD
Retailer 7$1,895 CAD
Retailer 9$1,976 CAD
Retailer 3$2,037 CAD
Retailer 4$2,106 CAD
Retailer 13$2,174 CAD
Retailer 11$2,331 CAD
Retailer 12$3,421 CAD
Retailer 14$3,679 CAD
Brilliant Earth$4,668 CAD

34 data points across 23 retailers

32 retailers$397 CAD to $3,679 CAD

A
Cheapest Retailer
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$397 CAD
Retailer 2
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$414 CAD
View
Price last confirmed 28 days ago
Retailer 3
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$440 CAD
View
Price last confirmed 36 days ago
A
Retailer 4
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$496 CAD
View
Final sale: no returns
Retailer 5
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$511 CAD
View
Price last confirmed 39 days ago
Retailer 6
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$514 CAD
View
Price last confirmed 33 days ago
Retailer 7
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$539 CAD
View
Price last confirmed 37 days ago
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Retailer 8
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$574 CAD
View
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Retailer 9
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$711 CAD
View
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Retailer 10
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$730 CAD
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Retailer 11
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$766 CAD
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Retailer 12
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$878 CAD
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Retailer 13
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$886 CAD
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Retailer 14
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$960 CAD
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Retailer 15
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$977 CAD
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Retailer 16
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$1,002 CAD
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Price last confirmed 21 days ago
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Retailer 17
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$1,152 CAD
View
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Retailer 18
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$1,225 CAD
View
A
Retailer 19
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$1,278 CAD
View
B+
Retailer 20
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$1,515 CAD
View
B+
Retailer 21
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$1,750 CAD
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Retailer 22
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$1,823 CAD
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Price last confirmed 26 days ago
B+
Retailer 23
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$1,895 CAD
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Retailer 24
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$1,938 CAD
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Price last confirmed 36 days ago
B+
Retailer 25
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$1,976 CAD
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B+
Retailer 26
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$2,037 CAD
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B+
Retailer 27
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$2,106 CAD
View
B+
Retailer 28
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$2,174 CAD
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B+
Retailer 29
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$2,331 CAD
View
Retailer 30
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$3,421 CAD
View
Price last confirmed 8 days ago
B
Retailer 31
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$3,679 CAD
View
Most Expensive
Brilliant Earth
17456976Y · Oct 17
$4,668 CAD
$3,350 USD
View
Price last confirmed 18 days ago
31 more retailers have this diamond
Prices start from $397 CADSave up to $3,282 CAD

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
1.55ct Radiant
$397 CAD