Usually the Star and Cresent. It is also the emblem in the Turkish flag.
Sometimes Allah (SWT)'s name is Arabic is also a symbol of Islam as you may see some people wearing it as a necklace or ring.
there are no three symbols of Islam
While the religion of Islam is often associated with this symbol, it is actually the symbol of the Ottoman Empire. Islam itself has no symbol.
There are no official symbols of Islam. With that being said, some would say the most common symbols that represent Islam are the Star and Crescent. But there are findings in the Quran that specify that either are legitimate official symbols of Islam.
The Qur'an is associated with the religion, Islam.
There are no symbols of Islam according to Islamic tradition. Many people have adopted the crescent and star as the Islamic symbol, simply because Islamic dates are based on the lunar calendar and thus Muslims seek out the crescent to signal the start of a new month.
Islam
The religion is Islam. see related question for more information.
Islam has No Symbols, People gave Islam symbol to for Distinction only, and it doesn't Mean anything
Dark colors, mostly black are associated with funerals in Islam.
There are no religious symbols in Islam religion as the Cross in Christianity or the David star in Judaism. The moon and the star are political symbols used on the flags of some countries but have nothing to do with the religion.
The Qur'an is associated with the religion, Islam.
crescent moon and star