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Gemstones of the World revised 5th edition, 2013 by Walter Schumann ISBN 978-1454909538 Smithsonian Handbook: Gemstones by Cally Hall, 2nd ed. 2002 ISBN 978-0789489852 v
Logan Sapphire. Star of Bombay, given to Mary Pickford by Douglas Fairbanks, Sr. Star of India. Stuart Sapphire. Black Star of Queensland. Star of Adam, with a weight of 1,404.49 carats (280.898 g), it is the largest star sapphire in the world. Queen Marie of Romania Sapphire.
Agave gracielae Galvan & Zamudio – Mexico (Querétaro) Agave gracilipes Trel. – Maguey de pastizal, Slimfoot Century Plant - Chihuahua, southern New Mexico, western Texas. Agave gracillima A.Berger – Mexico (Durango, Jalisco, Nayarit) Agave graminifolia (Rose) Govaerts & Thiede – NE.
This list may not reflect recent changes. * List of individual gemstones; A. ... List of gemstones by species; U. List of U.S. state minerals, rocks, stones and gemstones
Agave americana. Agave americana, commonly known as the century plant, [5] maguey, or American aloe, [6] is a flowering plant species belonging to the family Asparagaceae. It is native to Mexico and the United States, specifically Texas.
Amethyst is a violet variety of quartz. The name comes from the Koine Greek αμέθυστος amethystos from α- a-, "not" and μεθύσκω ( Ancient Greek) methysko / μεθώ metho ( Modern Greek ), "intoxicate", a reference to the belief that the stone protected its owner from drunkenness. [1] Ancient Greeks wore amethyst and carved ...
Bonapartea stricta (Salm-Dyck) Vukot. Agave stricta, the hedgehog agave, is a species of flowering plant in the family Asparagaceae, native to Puebla and Oaxaca in Southern Mexico. [4] Growing to 50 cm (20 in) tall, it is an evergreen succulent with rosettes of narrow spiny leaves producing erect racemes, 2 m (7 ft) long, of reddish purple ...
Agave (/ ə ˈ ɡ ɑː v i /; also UK: / ə ˈ ɡ eɪ v i /; Anglo-Hispanic, also US: / ə ˈ ɡ ɑː v eɪ /) is a genus of monocots native to the arid regions of the Americas.The genus is primarily known for its succulent and xerophytic species that typically form large rosettes of strong, fleshy leaves.