These glass jars are filled with small tumbled Iolite pebbles.
 
The approximate dimensions of the glass portion of the jars are:
MD: 2 (L) x 0.8 (W) inch
LG: 2.5 (L) x 0.8 (W) inch
 
Excerpts from Book 3 CREATION: ITS HISTORY, EXPLOSIVE EVOLUTION, AND ET ARRIVALS ON EARTH. (Available on Amazon):
(The Auric Expressions of Different Frequencies) Purple – This is the color of knowledge, often spiritually related. The deeper the purple the greater the depth. It’s also relative to the Crown Chakras, flowing through the Upper Crown of over half of you. It’s a smoother medium frequency and helps calm your brain allowing it to enter the Source Field to access its immense knowledge depositories. Find it in Amethyst.
Iolite – Offers relaxed Clarity and a soft feeling of Calm.