Scapolite

Color: Yellow, purple, pink, colorless, greenish
Moh’s Hardness: 5-6
Refractive Index: 1.54-1.56
Critical Angle: 40.49°
Specific Gravity: 2.57-2.74
Cleavage: Perfect in 2 directions
Fracture: Conchoidal, brittle
Dispersion: Medium (.017)
Heat Sensitivity: Moderate
Dichroic: Moderate
Birefringence (double refraction): Weak to medium (.009-.020)
Crystal Structure: Tetragonal

Treatments: Generally none, but Purple may be irradiated and/or heat treated

What I prefer to polishing with: Alumina oxide on a Tin lap, Spectra Ultralap

Jeff's Comments: Heat during dopping can cause problems. Orientate for best color which is often the "c" axis. Use a medium fine lap for roughing in.

Design Notes: About any Quartz design will work well...

Design Links:
Prince -This will work nicely

Rough Links:
Scapolite - Huge Gold Scapolite from Tanzania, yellow/gold Scapolite from Tanzania, Lilac Purple Scapolite from Tanzania

Cut Stone Links:
Scapolite - Faceted Scapolite

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E-mail to inquire or order: jeff@faceters.com