Page:A treatise on diamonds and precious stones including their history Natural and commercial.djvu/133

From Wikisource
Jump to navigation Jump to search
This page has been validated.
SAPPHIRE.
97

The topaz and white sapphire should have considerable thickness, and although they are sometimes cut in brilliant, yet I prefer the steps; as in the latter form, they refract more light, (have more play), and appear with greater lustre.