Halite And gypsum both sort very clear crystals that are certainly tender and therefore are effortlessly scratched. Licking a sample will swiftly distinguish the two, as halite has a similar composition as desk salt and a really distinctive ‘salty’ style. For people who dislike the idea of licking mineral samples, https://www.propanraya.com/id/produk/eco-gypsum-ee-4050