Rhodonite is a manganese inosilicate, SiO₃ and member of the pyroxenoid group of minerals, crystallizing in the triclinic system. It commonly occurs as cleavable to compact masses with a rose-red color, often tending to brown because of surface oxidation.

It is found in a few small deposits across the world. Sources of rhodonite include: Argentina, Australia, Brazil, Canada, England, India, Peru, Russia, and Sweden. In the United States it has been found in North Carolina, Colorado, New Jersey, and has been named as the state gem of Massachusetts.

Ocean Jasper is a combination of chalcedony, microcrystalline quartz and other minerals, resulting in colourful bands and patterns. ... It's variety of orbicular jasper is sometimes known as the “Atlantis Stone”. No such other mineral contains its diversity of tones and patterns like green, white, brown, orange and pink.

Ocean Jasper only comes from one place in the world, northwestern Madagascar. It is found in the Analalava district of the Sofia region in the former province of Mahajanga.

Agate is a rock consisting primarily of cryptocrystalline silica, chiefly chalcedony, alternating with microgranular quartz.

Agate is a translucent variety of microcrystalline quartz. It is used as a semiprecious stone when it is of desirable quality and color. Agate generally forms by the deposition of silica from groundwater in the cavities of igneous rocks.

These structures produce the banded patterns that are characteristic of many agates. Agate occurs in a wide range of colors, which include brown, white, red, gray, pink, black, and yellow. The colors are caused by impurities and occur as alternating bands within the agate.

Agates develop as secondary deposits in hollow cavities, called vesicles. Although they can form in all types of host rock, most of the world's agates developed in ancient volcanic lava. ... Later, these gases escaped through cracks that formed as the igneous rock cooled and hardened, leaving hollow cavities.See silica mineral (table). Agate is found throughout the world. In the United States it is produced in several western states; Oregon, Washington, Idaho, and Montana are the chief sources of gemstones. Most agates occur in cavities in eruptive rocks or ancient lavas.