English: This specimen is a fragment of a much larger diamond that is thought to have been composed of yet another fragment that is mentioned historically throughout the 18th and 19th centuries as a 135 carat gem and which was weighed in 1911 for the old royal palaces' Inventory as a 27.7 g (138.5 carats) stone. The brownish hue is due to superficial ferrous impurities that constitute evidence of the geological sedimentary context in which it was found. This diamond is potentially colourless.