Wiktionary
n. Caste predominantly found in Goa, Maharashtra and Karnataka. Known for being astrologers, and later involved in jewellery trade.
Wikipedia
The Daivadnya or is an ethno-religious community and a Hindu Brahmin caste of the west coast of India, predominantly residing in the states of Goa, coastal Karnataka, and coastal Maharashtra. The state of Goa is considered to be the original homeland of Daivadnyas. They are believed to have flourished and prospered in Goa and hence sometimes they are called Gomantaka Daivadnya. Due to many socio-economic reasons, they emigrated to different parts of India within the last few centuries.
They are commonly known as Śeṭ in the coastal region. The word Śeṭ is a corrupt form of the word Śreṣṭha or Śreṣṭhin, which could mean excellent, distinguished, or superior. Over time the word was transformed from Śreṣṭha to Śeṭ. Most of the older generation from the Daivadnya community in Goa call themselves Śeṭī Bāmaṇ, which is a corrupt form of Śreṣṭhi Brāhmaṇa. The Portuguese referred these people as Xete (cf. Xett, Xete) or sometimes Chatim (cf. Xatim), which is now Cyātī in the Konkani language; the word was a Portuguese appellation for "trader" derived from the local word Śreṣṭhin. Śeṭs are often called Daivadnya Suvarṇakara (cf. Svarṇakāra).