It typically crystallizes in granitic pegmatites or in vapor cavities in rhyolite lava flows including those at Topaz Mountain in western Utah and Chivinar in South America.
ໂດຍປົກກະຕິມັນເປັນໄປເຊຍກັນໃນ pegmatites granitic ຫຼືຢູ່ໃນຮັງຮາກໃນການໄຫຼ lava rhyolite ລວມທັງຢູ່ໃນພູ Topaz ພູຕາເວັນຕົກ Utah ແລະ Chivinar ໃນອາເມລິກາໃຕ້.