A stone banquet made of rare stones is on display at an exhibition center in Urumqi, capital of northwest China's Xinjiang Uygur Autonomous Region, June 15, 2018. (Photo: China News Service/Liu Xin)
A stone banquet made of rare stones is on display at an exhibition center in Urumqi, capital of northwest China's Xinjiang Uygur Autonomous Region, June 15, 2018. (Photo: China News Service/Liu Xin)
Rare stones are on display at an exhibition center in Urumqi, capital of northwest China's Xinjiang Uygur Autonomous Region, June 15, 2018. (Photo: China News Service/Liu Xin)
A rare stone is on display at an exhibition center in Urumqi, capital of northwest China's Xinjiang Uygur Autonomous Region, June 15, 2018. (Photo: China News Service/Liu Xin)
Rare stones are on display at an exhibition center in Urumqi, capital of northwest China's Xinjiang Uygur Autonomous Region, June 15, 2018. (Photo: China News Service/Liu Xin)
Rare stones are on display at an exhibition center in Urumqi, capital of northwest China's Xinjiang Uygur Autonomous Region, June 15, 2018. (Photo: China News Service/Liu Xin)
Rare stones are on display at an exhibition center in Urumqi, capital of northwest China's Xinjiang Uygur Autonomous Region, June 15, 2018. (Photo: China News Service/Liu Xin)
Rare stones are on display at an exhibition center in Urumqi, capital of northwest China's Xinjiang Uygur Autonomous Region, June 15, 2018. (Photo: China News Service/Liu Xin)