Goldstone – 925 silver

The name Aventurine derives from the Italian "a ventura" which means "by chance". It is also known as the stone of opportunity.  It comes in several different colors such as blue, green, yellow, grey and orange. Different colors offer different qualities such as blue aventurine is good for the throat chakra and third eye chakra, green aventurine compliments heart chakra and yellow compliments sacral and solar plexus chakra. It offers the wearer creativity, imagination, independence and prosperity. It also calms you down when in anger or when frustrated and helps in career success. Aventurine heals the body and keeps the body in harmony and balance. It is a stone of prosperity that makes it a great stone for business related people. Recent history claims that people who used to buy lottery, carried an aventurine in their left pocket for luck. Tibetans also used aventurine to decorate their sculptures and statues. The longer Green Aventurine is used, the more it will aid you in your daily life by opening up the mind to personal growth and opportunities. This special stone teaches us about ourselves and our place in the universe.

Crystal: Aventurine. Also known as goldstone
Country of origin: Brazil. 
Chemical composition: SiO2. 
Hardness based on Mohs scale: 6.5. 

This is human made mineral.
They are not natural minerals

Other known names: Blue aventurine, gold stone, synthetic aventurine 

Crystal and gemstone meanings, Detailed Synthetic aventurine properties