Rainbow Lattice Sunstone

Rainbow Lattice Sunstone, Hart’s Range, Northern Territory. Feldspar with ilmenite and hematite inclusions. Very hard to capture all the amazing colours. In an article about it in “Gem & Geology“ mag in 1989, it says it’s a new form of Orthoclase Feldspar. And you geologists may understand this - “Initial testing showed that they were orthoclase feldspar containing crystal-lograpically oriented exsolution inclusions of ilmenite and hematite, which is responsible for the aventurescence“