Artificial and lab created There are a number of artificial and lab grown minerals used to produce gemstones. These include: • Lab
alexandrite • Lab
corundum •
Cubic zirconia • Lab
diamond • Lab
emerald •
Fordite •
Gadolinium gallium garnet • Lab
moissanite • Synthetic
opal •
Metal-coated crystals hyped as
rainbow quartz • Lab
spinel • Synthetic
turquoise •
Terbium gallium garnet •
Trinitite •
Yttrium aluminium garnet •
Yttrium iron garnet Organic There are a number of organic materials used as gems, including: •
Amber •
Ammolite •
Ammonoidea •
Bone •
Copal •
Coral •
Ivory •
Jet •
Nacre (Mother of pearl) •
Operculum •
Pearl •
Seashell ==Mineral aggregates and other rocks==