The Blue Moon Diamond holds the record for one of the most expensive diamonds ever sold, valued at over $50.6 million.
This pink diamond set a record in 2017, selling for over $71.2 million at an auction.
An infamous blue diamond, the Hope Diamond is estimated to be worth over $250 million, known for its rich history and curse.
Exceptionally rare and highly prized, fine Jadeite, the pure form of Jade, has fetched high prices of about $9.3 million in 2014.
Red diamonds are extremely rare, and their prices can soar to several million dollars per carat, depending on the intensity of the colour. The Moussaieff Red Diamond is priced over $20 million.
High-quality emeralds, such as the Rockefeller Emerald sold for exceptional $5.5 million, setting a per-carat record price.
Rubies, particularly those with a deep red colour and exceptional clarity, one such is the Sunrise Ruby weighing 25.59 carats, set a record at $30.42 million.
This colour-changing gemstone can be quite rare, and high-quality Alexandrite can command prices in the tens of thousands of dollars per carat.
Pink diamonds are known for their rarity and beauty, the Graff Pink, a 24.78 carat diamond sold for $46.2 million for its uniqueness.
Among the rarest gemstones discovered in Australia, Musgravite is highly sought after by collectors, and prices can range from tens of thousands to over $35,000 per carat.