Funds will enable Newfield Resources to increase production at Tongo site.

Miner expects revenue of up to $230 million in 2023.

Diamond necklace leads auction with price of $5.9 million.

Revenue growth in municipality offsets weak mainland demand.

Company still faces hefty financial challenges after two-and-a-half-year closure.

26.12-carat, D-flawless diamond leads Jewels and Jadeite auction.

Pre-owned timepieces are beating jewelry at auction and outselling hard-to-get newer models.

Takeover of Pedemonte Group will boost Bulgari owner’s manufacturing capacity.

Tassel necklace by Van Cleef & Arpels more than doubles its high estimate.

Weak Chinese market dented demand at latest tender.