As we know, diamonds are not rare at all. It's a genius marketing strategy of De Beers and its artificial control of the limited supply due to its monopoly of owning 95% of global diamond supply for jewelry making. Not to mention the conflicts involved in the mining process of diamonds. Therefore, instead of diamond, we use quartz crystal as an alternative birthstone for April.
As an alternative birthstone for April, quartz crystal is the purest variety of quartz and is transparent and completely colourless. Its name derives from the Greek term krustallos meaning 'ice' and it is the sister gemstone to colourful varieties of quartz, such as amethyst (February Birthstone) and citrine (November Birthstone).