A fine quality ruby is generally more expensive than most sapphires and emeralds, with record prices of up to $1,000,000 per carat. Sapphires can cost anywhere from $1,000 to $11,000 per carat, but you'll find good-quality stones at $450 - $1,200 per carat. Emeralds range from $525 to $1,125 per carat.
Ruby: Untreated natural rubies are extremely rare. They are actually significantly rarer than sapphires, which is why they are even more expensive. Emerald: Like sapphires and rubies, emeralds are among the rarest of all gemstones. They are rarer than sapphires but not quite as rare as rubies.
Blue Diamond – $3.93 million per carat
The most expensive and rarest gemstone in the world is a natural blue diamond. That explains the price of $3.93 million per carat. Blue diamonds were discovered in India and later displayed in a London collection in 1839.
When it comes to price, sapphires are more expensive than emeralds. Good quality sapphires are from $450 and can go above $1600 for a carat. Of all its hues, blue and the rare padparadscha sapphire are the most expensive of all its hues.
When comparing sapphires vs diamonds price, diamonds are the more expensive stone. Though sapphires are rarer than diamonds, they are less expensive.
What is the rarest sapphire color? The two rarest sapphire colors are Padparadscha and cornflower blue. The most prized sapphires are Kashmir sapphires of a bright, velvety blue from the mountains in India. The last Kashmir sapphire was mined in 1927.
These inclusions reflect light in an effect known as asterism. You can distinguish a synthetic variant from a natural one by analyzing the reflected star from both of them. The one with a near-perfect star is synthetic. Because of its rarity and beauty, black star sapphire is costly and coveted by collectors.
Diamond – The Forever Gem
Diamonds symbolize forever love, which is why they're most commonly given as engagement and wedding rings. Diamonds that surpass the 'z-light yellow' rating on the diamond color scale are considered fancy yellow diamonds.
In fact, in the Middle Ages purple sapphire was called “Oriental amethyst,” and purple quartz was known as “Occidental amethyst.” Sapphire is much harder than amethyst, with a Mohs hardness of 9, and also more durable. But purple sapphire is more expensive than amethyst too because its much more rare.
Value. A fine quality ruby is generally more expensive than most sapphires and emeralds, with record prices of up to $1,000,000 per carat. Sapphires can cost anywhere from $1,000 to $11,000 per carat, but you'll find good-quality stones at $450 - $1,200 per carat.
February babies have the rarest birthstone of all. Diamond (April) is the rarest birthstone in a total of six states, while topaz (November) is the rarest birthstone in Montana, Wyoming, and Rhode Island.
The traditional setting and arrangement of these nine gems is shown in the illustration. A ruby (representing the Sun) is always in the center, surrounded (clockwise from the top) by a diamond, a natural pearl, red coral, hessonite, a blue sapphire, cat's eye, a yellow sapphire, and an emerald.
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.
The best color for a natural blue sapphire is an intense, velvety, deep royal blue. This color of sapphire would be considered AAA quality, the rarest and most valuable.
Most gemologists would nominate Sri Lanka while others might suggest Montana or Madagascar. Blue Sapphires from Sri Lanka are known as “Ceylon” sapphires. The sapphires from Montana's Yogo Gulch in the United States have an unusual and attractive color of blue that leans into the teal color range.
Tourmalines are less expensive than some popular precious stones, and they can be great replacements for emeralds, rubies, sapphires, and even colored diamonds. Since tourmalines are made in hydrothermal environments, it's normal for the liquid to be trapped in their minute inclusions.
World's Most Valuable Gem
Gem Black, Boulder, Crystal and White Opals are the world's #1 most valuable commercially available gemstone, yet they are complex with an exponentially large range of valuation characteristics than Diamonds, Rubies, Emeralds, Sapphires or Tanzanites.
Value. In terms of value, Sapphire is generally more expensive than Tanzanite. This is due in part to their rarity and hardness, as well as their long history as a coveted gemstone over the ages. Tanzanite, while still very valuable, are more readily available currently and are therefore not as expensive as Sapphire.
Diamonds, emeralds, rubies, and sapphires are known as the "Big Four" gemstones. These are the most valuable kind of precious stones.
diamond, a mineral composed of pure carbon. It is the hardest naturally occurring substance known; it is also the most popular gemstone. Because of their extreme hardness, diamonds have a number of important industrial applications.
The Philosopher's Stone was supposedly able to achieve this – indeed it was so transformative that it was also an elixir of life – handy for rejuvenation and achieving immortality.
To identify if your "sapphire" stone is real, stay in total darkness and use a flashlight to shine a light on it. If you have a genuine sapphire, the same color as the sapphire stone should reflect back. However, if it is a fake sapphire (usually made of glass), you will see other color reflections in the crystal.
In general one can say that lighter pastel colours are always cheaper than rare intensive sapphire colours. Blue and intense pink sapphires have always been rare and reflect the current and future higher value. Yellow and brighter pink sapphires are inexpensive, as are white and purple sapphires.
The amount of rutile present in the sapphire also commonly known in the industry as 'silk' govern how much light that can pass through the stone. More silk means more opaqueness of the sapphire which tends to produce an inexpensive gemstone.