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Aquamarine

Aquamarine is gemstone-quality blue beryl. Aquamarines can be found in the United States in Colorado at the summit of Mt. Antero in the Collegiate Range in central Colorado.

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Sanskrit language

... and thematic[?]. The thematic verbs are so called because an a, called the theme vowel, is inserted between the stem and the ending. This serves to make the thematic verbs ...