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 *5%;

There is a demand for dark stones as well, but prices are considerably lower however.
Stones are traded in the following specifications:

• **0% whole stones
• *0% whole stones / *0% broken
• *0% whole stones / *0% broken
• *0% whole stones / *0% broken
• *0% whole stones / *0% broken
• **0% broken stones
• **0% ox gall powder