Citi gave China Gold and Stone Mining (1380.HK) a buy rating for the first time, with a target price of HK $3; it has the largest marble mine in the mainland, with a reserve of 16.8 million cubic meters, which is sufficient for 112 years of mining; its quality is also better than that of its peers and can compete with international premium brands; and its output is expected to increase by 100% and 45% respectively in the next two years.

Goldstone rose 1.14 per cent to HK $1.77 yesterday.