Adapted from 'The cabinet of gems; or vocabulary of precious stones, coloured and arranged according to their comparative value: together with a description of the largest known diamonds and coloured gems in the world', S Batchelor (1840). Courtesy of the Gemological Institute of America. 170mm x 120mm (6 3/4" x 4 3/4"). Blank inside. Individually wrapped in a compostable bag with a 120gsm recycled kraft envelope. Printed with vegetable-based inks on a carbon neutral press using responsibly sourced, 300gsm Italian paper.