Most modern Witches wear occult jewelry, especially that which points to their religious beliefs. Some do not wear any jewelry while others seem to overindulge,
with a ring (or two) on each finger and thumb, and layers of necklaces and pendants. But whatever the preference for everyday wear, there are certain items of jewelry that are called for in rituals.
The requirements/suggestions for each tradition differ, so we will first look at the Gardnerian tradition as a typical example. In that denomination of Wicca, all wear a necklace of some sort in the ritual circle to symbolize the circle of rebirth, since one of the primary beliefs in Wicca is a belief in reincarnation. This can be any type of necklace, but traditionally the Witch's necklace is of amber and/or jet. The coven members may also, if they wish, wear a ring or two, although an overabundance is discouraged. The High Priestess wears a wide, silver bracelet as a sign of rank. This is decorated with certain Wiccan signs and symbols. The High Priest does not wear anything special, although at the Samhain Rite, he dons a horned helmet as representative of the god.
In Gardnerian Wicca, there is another position that may be attained by a High Priestess. If she has been leading her coven for some years, she has probably had one or more of her Third Degree Witches (Gardnerian has a degree system) break away to form their own covens, as offshoots of her own. This makes that original High Priestess a Witch Queen, or Queen of the Sabbat. To show that she holds that position, she wears a crown—a band of silver with a silver crescent moon at the front—and a garter. The garter is of green leather—often snakeskin—lined with blue silk. On it there is a silver buckle representing her own coven, and another buckle for each coven that has sprung from hers. The jewels of a Witch Queen—necklace, ring(s), bracelet, crown, and garter—are called her bigghes (jewels). The High Priest of a Witch Queen is known as a Magus, and he wears a gold bracelet, again marked with certain Wiccan signs.
As noted, there are many different denominations of Wicca, and not all follow the same guidelines where jewelry is concerned. There are some groups where all High Priestesses wear crowns and some where all female Witches wear silver bracelets. The Farrars speak of covens where all the women wear garters and say that a High Priestess doesn't become a Witch Queen until she has three buckles (her own coven plus two more) on it. There is no right and wrong in these different traditions, other than what may or may not be done within each particular tradition.