A maang tika is a hair ornament, which is popular in India. It's called nethi chutti (jewel for the forehead) in South India. A maang tika is typically a pendant to which is attached a short string (usually a metal such as gold or silver, depending on the pendant). The string a hook at one end with which you can fasten it to your hair with the pendant just about reaching your forehead.
It's common practice to fasten the string in such a way that the pendant is at the dead centre of your forehead but some people prefer to bring along the string to the centre and then shift it a little to either side.
The pearl and CZ stone maang tika is definitely a beautiful piece of jewellery. The pendant is more of a sphere, beginning with a single green stone encrusted in the centre and a circle of gold-coloured stones surrounding it. Then comes a ring of gold, beyond which we have beautiful little CZ (Cubic Zirconia) stones embedded in a circle. CZ stones look like diamonds - they're whitish and sparkling, often adding elegance to the jewellery.
After the CZ stones, we have a circle of pendant. This is the pendant in its entirety. The string that is fastened to the pendant is actually a couple of links chained together followed by a tiny pearl. This pattern forms the rest of the string, which ends with a simple hook.
So for the next grand party you have to attend, wear this beautiful pearl and CZ stones maang tikka and be the star of the show.