Limonite

A major constituent of the Earth's crust, plagioclase is a group of minerals that are frequently used in construction, architecture, and decoration. Some specimens exhibit optical phenomena which make them highly sought after as gems. Many of the rocks collected on the Moon are rich in plagioclase.

Opalized Fluorite is a rock predominantly composed of fluorite complemented by opal, calcite, dolomite, quartz, chalcedony, and other minerals. The most prized variety, Tiffany Stone, is a rare purple, blue, and white gem mined exclusively at the Brush Wellman beryllium mine in Spor Mountain, western Utah. In recent times, there has been a significant influx of less expensive materials from China and Turkey into the market, frequently leading to confusion and misidentification with Tiffany Stone.

A group of silicate minerals, zeolite minerals have well-formed crystals with spaces between molecules. These spaces are able to catch liquid and gasses, therefore the minerals of the zeolite have a number of industrial, agricultural, and home applications. They are often used for soaps and water purification systems.

Grossular Garnet was named after the Greek word "grossularia" which means "gooseberry" and it refers to the green color this mineral is often found in, although it can be orange, black, brown, cream, or even colorless. Reddish-brown and pink specimens are most commonly used for faceted gems, known by the name "cinnamon stone."

Iolite is a blue to violet silicate mineral found in igneous and metamorphic rocks. Generally, the material has little commercial use. Synthetic iolite is used for making ceramic parts used in catalytic converters. The clear variety is called iolite, and it's cut as a gem and used in the jewelry industry.

Commonly known as "fossilized lightning," fulgurite is a natural tube or crust made of sand, fused in the heat from a lightning strike. These irregular, glassy structures are found in many localities around the world, including the Sahara desert. Fulgurite is often used in the jewelry industry, particularly for pendants.

Found only in the seas around New Zealand, paua Shell is a gem-quality mineral that comes from its eponymous mollusk. The material can seem dull from one side, but on the other side, it shines with marvelous metallic colors. The shells are sometimes polished and sold whole, but they're also used for various souvenirs and decorative objects.

Fire Agate is a rare, semi-precious stone that gets its beautiful colors and fire-like appearance from hematite particles within the rock. When the light enters it, this unusual gem produces iridescent colors that change as the light source is moved. Fire Agate is known as a birthstone of the Zodiac sign of Aries.