Top 5 Most Expensive Gemstones in the World

The gemstone is also known as Gem, fine gem, jewel, precious stone, or semi precious stone. Gemstones are a piece of mineral crystal that is cut, polished, and is used to make jewelry or other adornments. The traditional classification in the west that goes back to the ancient Greek has a distinction between precious and semi-precious gemstones. However, the distinction shows the rarity of the respective stone in ancient times. In ancient Rome, the gem symbolized love and hope. The ancient Greeks believed the opal gave their owner the gift of prophecy and guarded them from any disease. In modern times gemstones are identified by gemologists, who describe the gemstones with the technical terminology. The first characteristics a gemologist used to identify a gemstone is its chemical composition. Let's see the top 5 most expensive gemstones in brief:

Emerald - Emerald is also known as panna stone in Hindi. It is a gemstone of variety of the mineral beryl and the chemical composition is (be3Al2(SiO3)6) a green colored with the traces amount of chromium and vanadium. Emerald has the hardness of 7.5 to 8 in the mohs scale. The word emerald is derived from the ancient Greek word green smaragdus. Emerald are graded using 4 Cs - color, carat weight, clarity, and cut. In the 1960s, the American jewelry industry changed the definition of emerald to include the green vanadium bearing beryl. The antiqued emerald was mined in Egypt at a location of Mount Smaragdus from 1500 BCE, also in India and Austria since the 14th century CE. Columbia is the world's largest producer of emerald, constituting 50% - 95% of the world production. Emerald is known to be the most reputed and popular gemstones in vedic astrology. Emerald is associated with the planet Mercury. The benefits of emerald stone is known to help in handling speech related difficulties, allergies, nervous disorders, and respiratory related ailments. It contains the power of emotional and mental health. 

Blue Sapphire -  Sapphire is a precious gemstone,a variety the mineral corundum, consisting of aluminum (Al2O3) with trace amounts of elements such as iron, titanium, chromium, vanadium, and magnesium. Blue Sapphire benefits the wearer with wealth, fame, a good name, health, happiness, prosperity, a long life, and mental price. It protects against danger, travel problems, terror, thieves, accidents and problems from  storms, fire or natural disasters. Blue sapphire is one of the highly prized sapphire gemstones. Blue sapphire acts the fastest and is the most powerful gemstones believed in vedic astrology. Sapphires are mined in Sri Lanka (ceylon), Burma, and Kashmir. The stone is exceptionally beneficial for the people dealing with Shani sade sati aur dhaaiya in their life as blue sapphire is ruled by lord Saturn also known as Shani in Hindi. It teaches the natives to have patience, perseverance and never say die attitude. Saturn is a slow moving planet that brings obstacles and limitations in one's life. 

Rubies - ruby is pink to blood red colored gemstone of a variety of the mineral corundum (Al2O3). Ruby is one of the traditional cardinal gems. The word ruby derives from Latin for red. The color red is due to the elements of chromium. The value of a ruby is determined by its color, cut, carat weight and clarity. It is the traditional birthstone for July and is usually pinker than the garnet. Ruby is associated with the sun. It shares a healthy relationship with the planet Mars, also the governing planet of Aries. Benefits of a ruby is power to enhance warmth and compassion for their lover in the heart of the wearer. Also it has the capability to clear confusion. 

Loose Diamonds - diamonds are mined from  within the earth in location around the world. When a diamond is mined it is called rough. A loose diamond is the end product that started with the rough diamond. A loose diamond is ready for sale and can be mounted on a ring, a pendant, earrings or in any piece of jewelry.  Loose diamonds are sold by both wholesalers and retailers around the world. It is available in all different carat weights and qualities. It is also cut in different styles over time. In recent times loose diamonds are becoming more popular as jewelry makers are more willing to design for an individual. 

Opal - opal is hydrated amorphous of silica (SiO2 .nH2O). There are two broad classes for opal, precious and common. The structure of the precious opal causes it to diffract light, resulting in play of color. Opal may be transparent, translucent, opaque and the background color may be white, black or any color of the visible spectrum. Benefits of an opal it cures several problems related to eyes, throat, speech, bone marrow, pancreas, and reproductive organ. 

While buying the expensive gemstones one should be careful about the originality of the stone and the gemstone should be provided with a govt. Lab certification.