Amber is fossilized tree resin, which has been appreciated for its color and natural beauty since Neolithic times.There are five classes of amber. Because it originates as a soft, sticky tree resin, amber sometimes contains animal and plant material as inclusions.
Precious coral or red coral is the common name given to Corallium rubrum and several related species of marine coral. The distinguishing characteristic of precious corals is their durable and intensely colored red or pink skeleton, which is used for making jewelry.
The material known as “jade” could be divided into two different minerals: jadeite and nephrite. Jade is produced by intense pressure and heat. This ornamental stone comes in a range of colors from white to black
Hematite, also spelled as haematite, is the mineral form of iron oxide. It is colored black to steel or silver-gray, brown to reddish brown, or red. While the forms of hematite vary, they all have a rust-red streak. Hematite is harder than pure iron, but much more brittle.
Lava stone is the oldest and most frequently found stone in world.It is a rock formed from magma erupted from a volcano. In other words, it differs from other igneous rock by being of volcanic origin. Volcanic rocks are among the most common rock types on Earth’s surface, particularly in the oceans. It has been estimated that volcanic rocks cover about 8% of the Earth’s current land surface.