Answer:
There is a birthstone for each month. Here:
January= Garnet Color: Deep red
February= Amethyst Color: Purple
March= Aquamarine/Bloodstone Color
April= Diamond Color: White,clear
May= Emerald. Color: Green
June= pearl/ Moonstone/ Alexandrite
Color: White/Purple
July=Ruby Color:Red
August= Peridot/Sardonyx
Color: Pale Green
September= Sapphire
Color: Deep blue
October= Opal/Pink Tourmaline
Color: Multi-color, pink
November= Citrine/Yellow topaz
Color:Yellow
December=Blue topaz/Turquoise
Color: Blue