Nepheline Cleavage
When it comes to choosing the best pick among Red Gemstones gemstones, Nepheline is known to be a popular choice!Physical properties of Nepheline include its hardness, gravity, fracture, cleavage, etc. For any gemstone crystal, Nepheline Optical Properties are responsible for imparting various physical properties to its structure. Knowledge of these properties is equally important to gem-cutters as well as to consumers. Nepheline cleavage is nothing but the plane across which the crystal splits during cutting. Nepheline cleavage is [1010] Poor,and specific gravity of Nepheline is 2.55-2.65.
The physical properties of Nepheline, in fact, are imparted by the chemical composition of its individual molecule. The reactivity or inertness of the crystal is solely governed by its chemical structure. Chemical composition of Nepheline is represented by Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C..