This gem is one of the rarest in the world, which explains its high price ... The 18.04-carat Rockefeller Emerald was the ...

Narrator: High-quality black opal can cost over $10,000 per carat, making it one of the world's most expensive gemstones. But mining black opal isn't easy. After investing tens of thousands of ...

From sparkling multi-million-dollar diamonds to custom designs, here are the most expensive diamond rings in the world that ...

While many expensive things have useful, revenue-generating purposes, some of the world’s most expensive objects ... This timepiece features 874 individual gemstones, including three heart ...

Crystals are admired for their beauty and healing properties. Rare stones like Blue Diamond, Pink Star Diamond, and Jadeite ...