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Quality and classification Highest demand is for stones with the following features: yellow golden orange colour; stones with low specific weight; large stones; bili rubin content not less than 35%; There is a demand for dark stones as well, but prices are considerably lower however. Stones are traded in the following specifications: 100% whole stones 90% whole stones / 10% broken 80% whole stones / 20% broken 70% whole stones / 30% broken 60% whole stones / 40% broken 100% broken stones 100% o (Global Livestoc... F, Nov 2020)