I'm thinkingt that Lucara currently finds itself in a precarious position, akin to being 'between a rock and a hard place'.
Financially, the company is constrained as the consortium of banks backing them has ceased further credit extensions. This situation is further strained by their inability to sell high-value diamonds over 10.8 carats after their deal with HB fell through. Additionally, the company faces increased pressure as their underground mine project is likely to require more cash investment to avoid further delays.