turquoise look alike?

Answer 1

There are a number of turquoise "look alikes" First there are the many plastic, glass and ceramic which are produced in vast quantities. Some are good at a distance but none stand up to close examination.
Second there natural minerals that appear similar.
1) Odontolite (bone turquoise) this is fossil bone or ivory that has been naturally coloured by iron phosphate.
2) Howlite. This is stained to look like turquoise and can be very effective.
3) Chrysocolla.
4) Hemimorphite.
5) Smithsonite.

Answer 2

Turquoise (or turquois) is opaque, blue-to-green hydrated copper aluminium phosphate mineral according to the chemical formula CuAl6(PO4)4(OH)8·5H2O. It is rare and valuable in finer grades and has been enjoyed as a gem and ornamental stone for thousands of years owing to its unique hue. In recent times turquoise—like most other opaque gems—has had its popularity undermined by the introduction of treatments, imitations, and synthetics onto the market, some difficult to detect even by experts.

The word turquoise is very old and likely is derived from the French pierre turquoise, meaning Turkish stone. This is thought to have arisen from a misconception: turquoise does not occur in Turkey but was traded there, and the gem became associated with the country in the West. The color, however, has been employed extensively in the decorative tiles adorning Turkish places of worship and homes for hundreds of years, beginning with the Seljuks, and the association quite possibly has caused the name to take root.

Answer 3

well, cheap turqouise can be made of plastic, dyed quarts, and a few other things. then there is low quality dyed to make it look better.