White Buffalo

The selected region features an elongated Southwestern-style sterling silver statement ring set with a distinct white and black matrix cabochon.  Stone Identification  The stone is highly characteristic of White Buffalo (often marketed as White Buffalo turquoise, though geologically it is a mixture of calcite and chert with iron or manganese matrix). It shares a nearly identical visual pattern with White Howlite and Wild Horse Magnesite, which are frequently used in similar Native American and Southwestern jewelry designs.  Sterling Stamp: The Sterling stamp confirms a precious metal purity of at least 92.5% pure silver. In Native American jewelry, the use of this explicit text stamp became common practice primarily from the 1950s onward.  The T Hallmark: A single capital letter T stamp functions as the artist's maker's mark. Several well-known Navajo (Diné) and Zuni silversmiths utilize a signature T or T combined initials. Notable possibilities include Rhonda Tahi Largo (who specifically signs with a lone T and stamps Sterling), members of the prominent Tahe family (such as Florence or Nora Tahe), or early pieces by the iconic artist Tommy Singer (who used an early T hallmark).