user: Question: how many times is the jewel Malachite?
Columns: ['Name', 'Jewel', 'Species', 'Gender', 'Jewel Power', 'Attribute', 'Birthday', 'Media Debut', 'Voice actor']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Ruby ( ルビー ? )', 'Ruby', 'Japanese Hare', 'Female', 'Courage', 'Magical Red', 'July 25', 'EP 1', 'Ayaka Saito']
SQL:

assistant: SELECT COUNT("Birthday") FROM "Table" WHERE "Jewel" = 'Malachite';