Question: are opals worth more than gold?
Answer: Opal is weighed in carats, equal to a fifth of a gram. Any opal worth more than €9 a carat is thus worth more than gold which is worth €42.50 per gram today. Most cut opal is worth more than €9 per carat, some poor colour opal is worth less and the finest black opal can be worth several thousand Euros per carat.