Originated from the old pit jade stone, old pit jade raw material in the production area is very rare, accounting for less than 1% of the mine jadeite raw material output;
Gambling stones are gambling and emerald waters and gambling jades. The old pits and jade stones are often husked. Their rough stones are also relatively large. Such raw stones are in the raw material market, whether in the country of origin, Myanmar or In China, most of them need to go through auctions, so the old stone pit is more rare.