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Radiant|Lab Grown|IGI

1.55ct G SI1 Radiant Lab Grown Diamond

EX • G/SI1 • IGI LG619423774

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

Certificate IGI LG619423774

Diamond specifications and retailer prices

From $299 CAD
$214 USD
As of October 25, 2026
Save $1,126 CAD (79%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $1,425 CAD at Brilliant Earth · As of October 26, 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG619423774 or 619423774. Listed at 13 retailers as of October 25, 2026, with prices from $299 to $1,425, a $1,126 spread on the same certified stone. Brilliant Earth lists it at $1,425. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.55
Carat
G
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle48.7°
Pavilion angle33.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG619423774
Dimensions8.45 × 5.58 × 3.75 mm
L/W Ratio1.51
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
8.45 mm5.58 mm1.55 ctG / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG619423774
Side View
Table 64.0%Crown 48.7°Girdle: MediumPavilion 33.9°Culet: NoneDepth 67.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 25
Current: $1,425 CAD|Low: $191 CAD|High: $1,565 CAD|Avg: $651 CAD|-8.9%
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
October 27, 2026
Retailer 10$242 CAD
Retailer 6$270 CAD
Retailer 3$281 CAD
Retailer 4$299 CAD
Retailer 11$299 CAD
Retailer 8$505 CAD
Retailer 2$532 CAD
Retailer 13$534 CAD
Retailer 9$764 CAD
Retailer 5$771 CAD
Retailer 12$962 CAD
Retailer 7$1,402 CAD
Brilliant Earth$1,425 CAD

40 data points across 13 retailers

13 retailers$299 CAD to $1,425 CAD

Retailer 1
-
$242 CAD
$173 USD
Price last confirmed 8 days ago
Retailer 2
-
$281 CAD
$201 USD
View
Price last confirmed 7 days ago
A
Retailer 3
-
$299 CAD
$214 USD
View
A
Retailer 4
-
$299 CAD
$214 USD
View
Retailer 5
-
$505 CAD
€344 EUR
View
Price last confirmed 8 days ago
A
Retailer 6
-
$532 CAD
£300 GBP
View
B+
Retailer 7
-
$534 CAD
$382 USD
View
B+
Retailer 8
-
$698 CAD
$500 USD
View
B+
Retailer 9
-
$764 CAD
$547 USD
View
B+
Retailer 10
-
$771 CAD
$552 USD
View
B+
Retailer 11
-
$962 CAD
$689 USD
View
B
Retailer 12
-
$1,402 CAD
£790 GBP
View
Most Expensive
B
Brilliant Earth
14997064A · Oct 26
$1,425 CAD
$1,020 USD
View
12 more retailers have this diamond
Prices start from $299 CADSave up to $1,126 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
$299 CAD