A purple coloured stone from Quartz family and thus not very costly.
This pale blue stone looks like sea water, hence the name. Comes from 'Beryl' family.
This is a yellow-to-golden member of the quartz mineral group. A deep golden variety from Madiera Spain can resemble the costly imperial topaz gem stone.
It is fluorine aluminium silicate and comes in yellow, yellow-brown, honey-yellow, flax, brown, green, blue, light blue, red and pink ... and sometimes it has no colour at all. The most common among them are Blue Topaz and Yellow Topaz.
A white gemstone with iridescent rainbow flashes, however, it does also come in different kinds such as fire opal which is red/orange combination. The precious opal has a rainbow iridescence, which changes with the angle of observation.
This olive green stone is used by August-born.
This Blue opaque stone comes from Copper ore mine. It contains gold particles.
This is really hardened rubber. When rubber trees got buried due to lava flows, they came under high pressure forming hard stones. Thus many times fossils are found trapped inside them.
This is also called kidney stones and is supposed to cure kidney diseases. It has bands of shades of green in concentric pattern.
Another opaque blue stone. Comes from Persia and is considered very holy by the Tibetans.