Lombok is an island in the Lesser Sunda Islands of Indonesia, lying immediately east of Bali across the deep Lombok Strait. Administratively it is part of West Nusa Tenggara province. The island is volcanically active, dominated by Mount Rinjani, and has a population of around three and a half million. To the gem and jewellery trade, Lombok matters principally for two activities: South Sea pearl farming in the bays along the eastern and northern coasts, and small-scale lapidary work and traditional silversmithing in inland villages.

Pearl farming

The bays of Lombok provide some of the cleaner, more sheltered waters for South Sea pearl culture in the Indonesian archipelago. The species cultured is Pinctada maxima, the silver-lipped or gold-lipped pearl oyster, the same species cultured in Western Australia, the Philippines and other parts of Indonesia. Lombok-cultured pearls reach typical South Sea sizes (10-18 millimetres in commercial grade, with exceptional pearls running larger) and the standard South Sea palette of white, silver, cream and gold.

The principal pearl-farming companies operating in Lombok and surrounding waters include Indonesian-affiliated joint ventures with Japanese and Australian capital. The pearls are typically auctioned through Hong Kong, Kobe and Bangkok and reach the international jewellery trade under generic Indonesian or South Sea origin descriptions, often without specific reference to Lombok. The island's contribution to global South Sea pearl supply is meaningful but not separately tracked in published trade statistics.

Coloured-stone activity

Lombok has minor production of agate, chrysoprase, and opal-bearing chalcedony from the volcanic units of the island's interior. These stones support small-scale lapidary cooperatives, particularly around the village of Sade and other Sasak (the indigenous people of Lombok) communities. The output is sold to tourists and through Bali to international buyers, generally as carved or cabochon work rather than fine faceted stones.

Traditional silversmithing

The villages of Kamasan, Loyok and Banyumulek sustain Sasak silversmithing traditions that produce filigree work, granulated jewellery and small ornamental objects. The craft draws on regional Indonesian silver traditions, with stylistic influences from Bali, Java and the wider Malay world. Lombok silver is sold predominantly to the tourist market through dealers in Mataram and Senggigi, and through Bali export channels.

The silver content of traditional Lombok work is typically 925 sterling, although older pieces may run lower; trade members sourcing antique work should expect to find variable purity and should test pieces before remounting or alloying.