Four Seasons GemsFour Seasons Gems is a well known exporter, wholesaler, manufacturer of semi-precious stones (various kind agate ....Address:Room 513, 5 / F, Block A, Focal Ind. CentreOn tat Gem Ornament FactoryOn Tat is one of the most popular semi-precious stone company in Hong Kong. We sell amethyst, citrine, aquamarine, ....Address:room 718, 7 / f, block B, focal industrial centre, 21 man lok streetAplus gem coAplus gem company was established in December 2009. We wholesale all kinds of semi-precious stones, such as Smoky ....Address:62 Hoi Yeun Road, Camel Paint Building, Blk 2, 9 / F, Flat D18 1