There are numerous colored stones - both precious as well as semiprecious and they are all extremely beautiful. But I am going to choose 7 colors - the 7 colors of the Rainbow and discuss the various gemstones in those colors.
Lets start with Red
Spinel Rubies : Often confused with rubies, Balas rubies are rose tinted spinels that belong to aluminium section of the larger spinel family. Named after the location they were found, the Badakshan province (Afghanistan), they are indeed similar to rubies as they have similar hardness and durability, vivid color, and brilliance. In addition to beautiful rich reds, spinel can be found in a range of colors like blue, green, yellow or colorless.
Garnet: Named after the pomegranate (a granatum), garnet is a brialliant, durable and affordable gemstone. It is a group of six closely related minerals: almandine, pyrope, grossular, spessartite, andradite, and uvarovite. Though green (Tsavorite, demantoid) and blue garnets are available, red and wine colors (purplish red to pink rhodolite and sunset orange malaya), are the most popular ones. Garnets are said to protect their owners from nightmares and safeguard them from accidents far from home.
Zircon: Though Zircons are generally considered as diamond alternatives, natural zircons are ancient materials on Earth which can be colorless, green, blue, yellow, brown, orange or red. Zircon is not to be confused with Cubic zirconia (discovered in 1937) a man-made compound of zirconium, oxygen and yttrium, which can be dyed in any color.
Refer here for more information on gemstones
That's it for now, come back to learn all about Orange gemstones.If you have any more information to share about gemstones, please share them as comments and I will include them in the post.
I hope you find it interesting