Garnets look great in both silver and gold.
Diamonds are obtained in Borneo, garnets in Sumatra, Bachian and Timor, and topazes in Bachian, antimony in Borneo and the Philippines; lead in Sumatra, Borneo and the Philippines; copper and malachite in the Philippines, Timor, Borneo and Sumatra; and, most important of all, tin in Banka, Billiton and Singkep. Iron is pretty frequent in various forms. Gold is not uncommon in the older ranges of Sumatra, Banka, Celebes, Bachian, Timor and Borneo.
In New Mexico are found turquoises and a few garnets; it seems probable that turquoises were mined by the Aztecs.
The New Mexican garnets are found in McKinley county.
Garnets are found in the Sierra de Gata and in the Sierra Nevada fine marble is quarried.