 Complete the following phrase:  In the earliest years of Yogo sapphire mining, before Yogo sapphires achieved their own reputation, Oriental sapphires were sold in Montana with claims they were Yogo sapphires, while in Europe, Yogo sapphires were sold as Oriental sapphires. However, Yogo sapphires became notable in their own right. Paulding Farnham 18591927 used Yogo sapphires in several jewelry pieces he designed for the 