Black Eye Agate 6mm Round 15-16 InchBlack Eye Agate is a variety of Sardonyx which has a Sard base, typically of brown or black, with bands of white Onyx running through it. Sard is not Onyx, but rather a dark variety of Carnelian. Sardonyx is sometimes treated to bring out its reddish tones. It is believed by some to improve memory and increase analytical skills.

and this phenomenon is thought to be due to impurities of yttrium or organic matter within the crystal lattice

as opposed to the presence of Chromium which creates Emerald’s green color

The stone's composition remains somewhat ambiguous

Sapphires sustain life force and attract peace and joy

and because its hardness has made the stone perfect for beads and cabochons

It ranges from almost completely transparent to an almost opaque brownish-gray crystal

such as China

Madre de Cacao is a very hard tropical wood with a visible grain

creating veins and mottling that ranges in color from rust to black

the brown spaces creating new continents aside the unfamiliar oceans

Isaac’s Cathedral in St

although the colors are much more muted