At the time, it was not realised that schorl and tourmaline were the same mineral, as it was only about 1703 that it was discovered that some colored gems were not zircons.
في ذلك الوقت لم ادراك أن schorl والتورمالين كان نفس المعدن ( كان فقط حوالي 1703 قد تم اكتشاف أن بعض الأحجار الكريمة الملونة لم تكن الزركون ).