Dakshinavarti (Ma Lakshmi) Shankh:

Conch or Shankh is very sacred in Indian religion. It has its great importance and value in Vastushastra. These shankhs come from deep seas and are very rare. Dakshnavarti Shankh is a symbol of Ma Lakshmy, Goddess Lakshmi. These are also known as Ma lakshmi shankh or Goddess Lakshmi or Valampuri shanks.

The sacred Shankh that opens towards right hand side is called Dakshnavarti Shankh or Conch. These Shankhs are very rare.
It has long neck and having brown lines.
These lines runs towards right or South.
It should have 3 to 5 ridges.
The size of the Shankh differs. Can be as small as wheat grain and as large as coconut.

The Shankh or Conch is associated with many Hindu Gods and Godesses:
Vishnu holds four attributes in hand. It is one of them.
Brahma on the seat.
Ma Lakshmi holds it in one hand.
Surya ISun) in the middle.
Chander (Moon) at the tip.
At the back of the Shankh (Conch) is Prahaoatu.
The hair whorls on Budha’s head spriral to the right, the same swirl on the conch.

Brings prosperity and abundance.
No shortage of food, clothes and money.
Brings happiness, peace and prosperity.
Enlightens students with knowledge and memory.
Keep in religious places in house, brings Goddess Saraswati and Goddess Lakshmi in house.
Any black magic, malefic or evil effect can be removed just by sprinkling Ganges Water from it.
Remove ill effects of Balhatya (Child killing), Brahmhatya (Priest killing), Gohatya (Cow killing) in previous births.