Purple Czochralski Lab Sapphire, Pixel Rectangle Cut, 40.5 Carats
SQO149
🍇🍇🍇 This astonishingly large, Czochralski-grown purple sapphire with a pixel cut will create a truly magnificent piece of jewelry. Its perfect proportions showcase a uniquely appealing pixel cut display. If you admire amethyst but need something more durable, this sapphire's exceptional hardness makes it an excellent choice for long-lasting wear.
DIMENSIONS AND SHAPE
Size: 19.93mm x 15.44mm x 11.7mm
Weight: 40.5 carats
Cut: Pixel Rectangle
Shape: Rectangle
Clarity: Loupe Clean
Inclusions: None
Treatment: None
PHYSICAL PROPERTIES
MOHS hardness: 9.0
Pleochroism: Dichroic
Dispersion: 0.018
Density: 4.0
Refractive Index: 1.76
Chemical Formula: Al2O3
POSSIBLE JEWELRY APPLICATIONS
Collections
🌍 GENERAL MATERIAL DESCRIPTION
- Material Name:CZ Purple Sapphire
- Country of Origin : China
- Growth Method: Czochralski
Purple sapphire derives its color from a mix of blue (titanium and iron) and red (chromium) dopants. In the flame fusion process, the iron and titanium change valence states, leading to a color difference between the center and the rim of the boule. While this can create a striking effect in a cut gem, the color consistency varies. Conversely, Czochralski-grown purple sapphire avoids this zoning issue through precise control over the growth chamber, resulting in a uniformly colored crystal. Despite its high production costs and lack of optical or industrial applications, this material is primarily supplied due to demand for full sapphire watch cases. This ornamental color, among others, is increasingly being produced to meet the rising demand for CNC-machined full sapphire watch cases.
🏭 SPECIFIC Lot INFORMATION
We received this batch of material from a supplier specializing in watch case materials.
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Pairs well with
