Emerald. Rarer than diamonds, emeralds are also more expensive than the same quality diamond. Their colouring ranges from green to blue-green, and the darker the colour, the more expensive they are.
The pink diamond “Pink Star” is the most expensive gemstone in the world. It was bought at a Sotheby's auction by Hong Kong jewelry chain Chow Tai Fook for an incredible $71.2 million. The stone was mined in South Africa and weighs 59.60 carats.
2. Pink Diamond – $1.2 million per carat. The second most expensive natural gemstone on this list is a pink diamond. Pink diamonds, like red diamonds, are classified as fancy-colored diamonds.
Moissanite has unparalleled sparkle! It has a higher refractive index than diamond, resulting in greater brilliance than diamond. Moissanite also has greater dispersion (fire) than a diamond, so you will notice more rainbow flashes of light.
Ammolite. In 1981, the World Jewellery Confederation (CIBJO) declared ammolite a new organic gem. Occurring in limited deposits in the Rocky Mountains, this gem material is much rarer than diamond.
Currently, lab-made cubic zirconia (CZ) is the most popular diamond lookalike. At a fraction of the price, it can rival diamond in brilliance (the light it reflects) and dispersion or fire (the colorful flashes that seem to come from within the stone).
Painite : Not just the rarest gemstone, but also the rarest mineral on earth, Painite holds the Guinness World Record for it. After its discovery in the year 1951, there existed only 2 specimens of Painite for the next many decades. By the year 2004, there were less than 2 dozens known gemstones.
Gemstones symbolize more than your birth month, however. Some are even known to have unique healing properties. In order to feel the energetic vibe of a gem, many people choose to wear certain gems as jewelry. The four most sought-after precious gemstones are diamonds, sapphires, emeralds, and rubies.
International Space Station: $150 Billion
The most expensive thing in the world is related to the Universe and it is the International Space Station. The amount which has gone towards its existence in terms of building and designing is $150 billion.
Blue Diamond - $3.93 Million Per Carat
Blue diamond rules the list of most valuable gemstones and is the rarest of all. The blue color in diamonds is because of the traces of the Boron element. Blue diamonds were first discovered in India and considered as the elemental symbol of royalty.
Emeralds are rarer and often more expensive than diamonds
When it comes to rare and expensive gemstones, most of us immediately think of diamonds, but, in fact, emeralds are more than 20 times rarer than diamonds and, therefore, often command a higher price.
Scientists have found a mineral stronger than diamond. They say lonsdaleite could be used to fortify industrial tools like drill bits and saw blades - AND teach us about the evolution of earth.
Platinum – A Precious Metal of Choice
Naturally white, the rarest of precious metals and the most secure setting for diamonds and precious stones, Platinum is the perfect choice for an expression of love that will last a lifetime.
Diamonds are expensive. Diamonds cost more than gold or platinum.
Diamonds are Forever
Its name comes from the ancient Greek adámas meaning “unbreakable”.
Gem-quality rubies are significantly rarer than diamonds, though there are certain types of diamonds that are very rare too. If we weigh the most spectacular examples of rubies and diamonds against one another, diamonds that show color are even rarer.
Though sapphires are rarer than diamonds, they are often a more affordable diamond alternative or accent. The brilliance, durability and timelessness of diamonds keeps them as the more expensive of these two gems. A diamond of similar carat, cut and quality will cost more than a comparable sapphire.
The rarest gemstone color is red. These include red diamonds, red emeralds and the coveted Burmese ruby. Gemstones of a rich crimson color are incredibly difficult to discover in nature, and rank among the rarest gemstones in the world.
Moissanite. In the last few years, moissanite has become one of the most popular diamond alternatives, and it's not hard to see why. Not only does moissanite strongly resemble a diamond, but they come in at a fraction of the price of the latter, and they are almost as durable.
Opals, unlike diamonds, are genuinely rare – as fast as opals are mined, they are sold. Diamonds are in fact very common, yet prices are kept high by vast stockpiling and strict supply control. Unlike diamonds however (which are incredibly hard 10/10 on the Mohs scale), opals are a relatively soft gemstone.
After diamonds, sapphire (with rubies) are the second hardest gemstone. They're also much tougher than diamonds and are ideal for daily wear.
Tanzanite is a shocking 1000 times more rare than a diamond. Discovered for the first time in 1967 and only found in the foothills of Mount Kilimanjaro, these gemstones go for about $1,500 per carat. Tanzanite has the ability to change color depending on the angle of light it is in.