| Colouration of Aquamarine and Yellow Beryl Pyrope from Vietnam Multicoloured Quartz from Brazil A 42.54 ct Historical...Origin of Basalt-related Pyrope from Southeast Vietnam 773 By Le Ngoc Nang, Pham Trung Hieu and Pham...Bystrite in a Mogok Ruby | Topaz from Thanh Hoa, Vietnam | Traceability and Sustainability of Precious Coral...orthoclase from granitic pegmatites in Minh Tien, Vietnam, very rarely shows chatoyancy or weak asterism...a transparent green orthoclase from Luc Yen in Vietnam. Gemologický spravodajca, 10(2), 5–11. Henn, U |
