Gold-Silver Ratio exceeds 90:1
Gold has reached new all-time highs, and the gold-to-silver ratio now exceeds 90:1. Such a high ratio has often signaled an impending breakout for silver prices. It indicates that silver could be undervalued, and we may be on the verge of a major price surge. Sometimes, if you miss a price run-up for gold, you can make up for it by buying silver instead as it catches up to its yellow cousin.
Source – Seeking Alpha / SchiffGold