seven treasures (七寶). Seven Treasures Gold, silver, lapis lazuli, crystal, agate, red pearl and carnelian. They represent the seven powers of faith, perseverance, sense of shame, avoidance of wrongdoing, mindfulness, concentration and wisdom.
These are ;
(1) suvarṇa (金, gold);
(2) rūpya (銀, silver);
(3) vaiḍūrya (琉璃, aquamarine);
(4) sphaṭika (頗梨, crystal);
(5) musāragalva (硨磲, conch shell or white coral);
(6) lohita-muktikā (赤珠, ruby); and
(7) aśmagarbha(瑪瑙, emerald).
Sometimes coral and amber are included in place of crystal and ruby. F. Max Müller cites a reference in Buddhist Mahāyāna Texts (Cowell et al.  1969, part 2, 92), in which vaiḍūrya is matched with lapis lazuli, and aśmagarbha with diamond. While lapis lazuli is an opaque intense blue stone, indications in the sūtras are that vaiḍūrya should be a transparent blue beryl, such as aquamarine. According to the Monier-Williams Online Dictionary, aśmagarbha is emerald; vajra (伐折羅) is diamond, an adamantine mineral (金剛)