Freshwater pearls come from mussels, saltwater pearls come from oysters.There are four main types of cultured pearls, Freshwater pearls, Akoya pearls, Tahitian pearls and South Sea pearls. Freshwater pearls are the most readily available and least costly pearls.
Online PR News â 14-October-2011 â â Sterling, Va. â Carbon Black, Inc. announced today the release of its namesake software product, Carbon Black Enterprise, a resource-friendly security sensor designed to provide IT professionals with elemental insight into where and when a security incident has occurred in their enterprise.
This method obtains carbon black by collecting soot from fumes generated by burning oils or pine wood. This method has been used since the days before Christ, and is not suitable for mass production. However, it is used as raw material for ink sticks as it provides carbon black with specific color.