КАМЕНЬ
Шпинель
Spinel
Transparent gem spinel; its red is caused by chromium, the same trace element that colours ruby.
Показано на английском языке, поскольку проверенный перевод пока недоступен.
- Типичный цвет
- Red and pink are classic; also blue, violet and other colours
- Также известен как
- Spinel · Balas ruby · Шпинел
- Камень по месяцу рождения
- Август Современная традиция, а не свойство камня. GIA
НАЙДЕН В ТАДЖИКИСТАНЕ
Кухилал в Ишкашимском районе — исторический источник благородной шпинели, «бадахшанского лала».
Color Mechanism and Spectroscopic Thermal Variation of Pink Spinel Reportedly from Kuh-i-Lal, TajikistanИЗ ЧЕГО ОН СОСТОИТ
Минералогия
Физические и оптические свойства относятся к минеральному виду; полный профиль с источниками — на странице минерала.
Чем вызван цвет
Red spinel is coloured by chromium, the same trace element that colours ruby and emerald.
Похожие камни и как их отличить
Spinel was mistaken for ruby for centuries, and many famous historical "rubies" are spinel — among them the Black Prince's Ruby set in the front of Britain's Imperial State Crown and the Timur Ruby, which weighs over 350 carats and carries several Persian inscriptions. The two were separated scientifically only in 1783, when Jean-Baptiste Louis Romé de l'Isle distinguished them by their crystal shapes (GIA reading list).
Сравнить с похожими камнямиИстория и названия
For a thousand years or more, red and rose-red spinels from Central Asia were called "balas rubies". The name is traced to Badakhshan: SSEF derives it from badaxš, the ancient Persian name for the region, while GIA's reading list links it to the town of Balkh. Historic Badakhshan extended far into present-day Tajikistan, and most of these spinels were mined at Kuh-i-Lal, today in Tajikistan near the Afghan border (SSEF), less than a mile from the Pyandzh River (GIA). Project Sang records spinel at Kuh-i-Lal at district precision only.
КОЛЛЕКЦИЯ
Учебные изображения
ИСТОЧНИК
GIA Gem Encyclopedia — Spinel; SSEF — Spinel from Afghanistan; GIA — Historical Reading List: Ruby and Balas Ruby