I purchased them long ago when I lived in New Mexico. Small silver studs with beautiful spiny oyster shell reddish orange cabochons. (see second photo with ruler for size).
Spiny oyster shell holds a significant place in history, particularly in the cultures of indigenous peoples of the Americas, including Native American tribes such as the Navajo, Zuni, and Pueblo. Archeologists have found pieces of spiny oyster in burial sites dating back as far as 6000 BCE.
In ancient South American cultures, spiny oyster shells were more valuable than gold and silver. Only Shamans or elders were allowed to wear or use them. Because of its vibrant colors, Spiny Oyster shell pieces were a popular choice for adornment and ceremonial objects.
In addition to its use in jewelry, spiny oyster shell was also utilized in pottery, inlay work, and other forms of traditional craftsmanship. Its enduring popularity and cultural importance have ensured its continued use in contemporary Native American art and jewelry making.
p.s. I also have turquoise stud pairs and other Southwest Earrings and jewelry for sale.