Researchers have formed an astonishingly lightweight 18-carat gold, using a form of plastic in place of the conventional mixture of metallic alloys. Researchers used protein fibres and a polymer latex to create a matrix in which they deposited thin discs of gold nanocrystals. Researchers first added the elements to water and formed a distribution to produce the new lightweight gold. After combining salt to turn the distribution into a gel, next they replace the water in it with alcohol. The plastic gold is suitable for the production of watches and jewelry and is also suitable for chemical catalysis, electronics applications, or radiation shielding.