Agate Pendant Necklace

Agate pendant necklace. The lobster clasp closure sometimes jams when closing and there is some tarnishing on the metal edges of the pendant. Purchased at a boutique in Waterville Valley, New Hampshire. - I don't know what the metal is - Pendant measures approximately 1.57 inches long by 1.25 inches wide (4 x 3.18 cm) - Chain is approximately 17.5 inches (44.45cm) long - Lobster clasp closure (sometimes jams when closing) - Comes from a smoke-free home - Please ask all your questions prior to purchasing