Quartzy a. : Quartzose.

Example:
What is the green stone/gem that comes typically from tenerife?

Taxonomy
reagents, Sigma-Aldrich, Fisher, protocols, inventories, Research, scientists, Columbia University, Life-sciences, sciences network, Graduate Student, Ph.D, Search, LabMates, PP2A, Calbiochem, sigma, 5mg.

Defination from the web:
... I've been responsible for managing lab inventories for almost 15 years and Quartzy is the best solution I have seen. ...