Black Spinel 2-3x5-6mm Faceted Irregular Tyre Beads - 8-Inch Size_18x25-20x30mm Tiger Eye is a macrocrystalline

Tiger Eye is a macrocrystalline Quartz stone with bands of rich golds and browns

The opaque stone’s red color is due to high iron content

manganese and other metallic oxides captured during the forming of the rock

There are 2 specimens pictured to show that there are variations in the size and color

Black Spinel 2-3x5-6mm Faceted Irregular Tyre Beads - 8-Inch Size_18x25-20x30mm Tiger Eye is a macrocrystallineSpinel is a hard vitreous magnesium aluminum oxide, and comes in a range of other colors, but those varieties are transparent. Black Spinel not only has the dark color, but it is opaque as well, rendering its black especially deep and mysterious. Sometimes called the "Black Prince's Ruby" for its role in the English crown. It has been mistaken for ruby and sapphire at times, but can be distinguished by its structure and its lower relative hardness.