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Radiant|Lab Grown|IGI

1.55ct D SI1 Radiant Lab Grown Diamond

EX • D/SI1 • IGI LG659400706

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

Certificate IGI LG659400706

Diamond specifications and retailer prices

From $945 CAD
£533 GBP
As of October 29, 2026
1 retailer carries this diamond
Only listing: $945 CAD at Diamond Quarter
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at Diamond Quarter

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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG659400706 or 659400706. Listed at a single retailer as of October 29, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. 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
D
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42°
Pavilion angle35.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG659400706
Dimensions8.33 × 5.72 × 3.74 mm
L/W Ratio1.46
Culet sizePointed
Top View
8.33 mm5.72 mm1.55 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG659400706
Side View
Table 62.0%Crown 42°Girdle: MediumPavilion 35.1°Culet: NoneDepth 65.4%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 29
Current: $393 CAD|Low: $154 CAD|High: $1,235 CAD|Avg: $684 CAD|-27.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
June 17, 2026
Retailer 1$393 CAD
Retailer 5$557 CAD
Retailer 4$672 CAD
Retailer 3$711 CAD
Retailer 6$750 CAD
Retailer 2$942 CAD

73 data points across 6 retailers

1 retailer

B
Diamond Quarter
1.55SI1DLG069073N · Oct 29
$945 CAD
£533 GBP
View

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.

B
1.55ct Radiant
$945 CAD