Gem-Stones and Their Distinctive Characters
PART II—SECTION C
ORNAMENTAL STONES
XXXIX. FLUOR, LAPIS LAZULI, SODALITE, VIOLANE, RHODONITE, AZURITE, MALACHITE, THULITE, MARBLE, APOPHYLLITE, CHRYSOCOLLA, STEATITE OR SOAPSTONE, MEERSCHAUM, SERPENTINE 285