The notice bans all related financial activities involving cryptocurrencies, such as trading crypto, selling tokens, transactions involving virtual currency derivatives and 'illegal fundraising'
David Marcus, head of Facebook's crypto unit, told The Information news site that company leaders "feel pretty committed" to launch the digital wallet called Novi this year
Bitcoin tumbled 11% on Monday, its largest one-day drop in over a month, with losses of nearly 30% in the last week alone almost wiping out gains for the year-to-date.
Brazil's real erased early losses to trade up 0.2%, as central bank minutes showed a 100 basis point hike could be coming at the next meeting to keep inflation in check.
Copper struggled to hold gains, weighing on top producer Chile's peso, while Mexico's peso looked to give back Monday's strong gains, down 0.4%.
The 101.38-carat pear shaped flawless diamond, dubbed The Key 10138, is one of just ten diamonds of more than 100 carats ever to come to auction, only two of which were pear-shaped.
The name of the colorless diamond - Key 10138 - is intended to reflect the integral role that keys occupy in the world of cryptocurrencies.