English: This display case showcases a collection of semi-precious gemstones, centering on Agate, a variety of banded chalcedony often featuring quartz-filled geodes. Alongside these specimens, the exhibit presents Opal, known for its iridescence, and Chrysoprase, a valued green variety of chalcedony. Of particular archaeological importance is Carnelian, a red-to-brown stone frequently discovered as grave goods in ancient Philippine burial sites, highlighting its historical value in early trade. These polished geological pieces provide a clear look at minerals prized since antiquity for both ornamentation and ritual use.