birthstones 

Statements about this table:
august have the largest amount of birthstones through the 15th - 20th century
topaz have be associate as a birthstone with november and december
us (1912) and britain (2013) both consider sardonyx and peridot to be the birthstones of august
among several other stone , garnet be consider the birthstone for january by every group except the hindu
august have the largest amount of birthstones through the 15th - 20th century , but not in the 16th century
topaz have be associate as a birthstone in many month include november and december
us (1912) , us (2013) and britain (2013) consider sardonyx and peridot to be the birthstones of august
no birthstones have change month in the united state from 1912 to 2013
month
15th - 20th century
us (1912)
us (2013)
britain (2013)
hindu
january
garnet
garnet
garnet
garnet
serpent stone
february
amethyst , hyacinth , pearl
amethyst
amethyst
amethyst
chandrakanta
march
heliotrope , jasper
heliotrope , aquamarine
aquamarine , heliotrope
aquamarine , heliotrope
gold siva - linga
april
diamond , sapphire
diamond
diamond
diamond , rock crystal
diamond
month
15th - 20th century
us (1912)
us (2013)
britain (2013)
hindu
may
emerald , agate
emerald
emerald
emerald , chrysoprase
emerald
june
cat 's eye , turquoise , agate
pearl , moonstone
pearl , moonstone , alexandrite
pearl , moonstone
pearl
july
turquoise , onyx
ruby
ruby
ruby , carnelian
sapphire
august
sardonyx , carnelian , moonstone , topaz
sardonyx , peridot
peridot
peridot , sardonyx
ruby
month
15th - 20th century
us (1912)
us (2013)
britain (2013)
hindu
september
chrysolite
sapphire
sapphire
sapphire , lapis lazuli
zircon
october
opal , aquamarine
opal , tourmaline
opal , tourmaline
opal
coral
november
topaz , pearl
topaz
topaz , citrine
topaz , citrine
cat 's - eye
december
heliotrope , ruby
turquoise , lapis lazuli
turquoise , zircon , tanzanite
tanzanite , turquoise
topaz