Like other famous gemstones such as rubies, sapphires are frequently heated to improve their gem value in terms of brilliance. Princess Diana of Great Britain was one of the most well-known people engaged with a sapphire stone engagement ring. In addition to blue, pink, yellow, and white sapphires are among the most prevalent sapphire colors.Ī blue sapphire stone, sometimes known as the “jewel of truth and faithfulness,” is one of the most popular gemstones for wedding bands, and it is also one of the most expensive. The sapphire stone is named after the Greek word for “blue,” which explains why many individuals are astonished to realize that it is obtainable in a rainbow of colors in addition to its traditional blue hue. Taking its name from the Latin adjective for red (“ruber”), the blazing dark-red color of a ruby gemstone is emblematic of passion in the world of jewelry. When illuminated by incandescent light, they take on a deeper red hue. Heat treatment of rubies is commonly used to enhance the color of the gem and increase the gem’s clarity. Rubies come in various colors ranging from red to orange-red to purplish-red in hue. A kind of corundum mineral species, rubies are the most valuable colored gemstones in the gem market, commanding the top price per carat of various colored gemstones. Rubies have been called the most valuable gemstone for thousands of years. In analyzing emeralds, color is the absolute most significant factor to consider the more vivid and brilliant the color, the higher the gem’s monetary value.Įmeralds are one of the few gemstones in which noticeable inclusions (known as the “Jardin”) are desirable in the finished form, despite their rarity. Their bright green color range extends from green to greenish-blue, and they are prized for their rarity and beauty. Cleopatra, the ancient Egyptian monarch was well-known for her preference for these gloriously bright green gemstones, which legends claimed she adored.Įmeralds are a form of beryl and belong to the same mineral category as aquamarine. EmeraldsĮmeralds, the springtime birthstone, represents rebirth. If you are looking for a one-of-a-kind colored gem, you might want to try a black diamond, which is an extremely rare type of gemstone. Fancy-colored diamonds are difficult to find and exceedingly precious. The majority of diamonds commercially available are white diamonds, which are coveted for their colorlessness. When it comes to diamonds, the term “admas” originated from the Greek word “admas,” which means something indestructible or indomitable. With their unrivaled strength and brilliance, diamonds have become a universal emblem of undying devotion and the most preferred gemstone used in wedding rings. The Art of Cutting and Polishing Gemstonesġ1 Popular Different Types of Gems Listed 1.11 Popular Different Types of Gems Listed.Ratnapura contains the most gem deposits and derived its name from the gem industry. It has been estimated that nearly 25% of the total land area of Sri Lanka is potentially gem-bearing, making Sri Lanka one of the countries with the highest density of gem deposits compared to its landmass. The metamorphic types of gems constitute 90% of the gem deposits in Sri Lanka. Residual deposits are mainly found in flood plains of rivers and streams. The mineralogy of the gem deposits varies widely with, among others, corundum ( sapphire, ruby), chrysoberyl, beryl, spinel, topaz, zircon, tourmaline, garnet being common. The gem deposits are classified as sedimentary, metamorphic and magmatic the sedimentary types being the most abundant. Nearly all the gem formations in Sri Lanka are located in the central high-grade metamorphic terrain of the Highland Complex. The gems form in sedimentary residual gem deposits, eluvial deposits, metamorphic deposits, skarn and calcium-rich rocks. Ninety percent of the rocks of the island are of Precambrian age, 560 million to 2,400 million years ago. Sri Lanka, geologically speaking is an extremely old country. Serendib was the ancient name given to the island by middle – eastern and Persian traders that crossed the Indian Ocean to trade gems from Sri Lanka to the East during the 4th and 5th century. Records from sailors that visited the island states that they brought back “jewels of Serendib”. Ptolemy, the 2nd century astronomer recorded that beryl and sapphire were the mainstay of Sri Lanka’s gem industry. Marco Polo wrote that the island had the best sapphires, topazes, amethysts, and other gems in the world. The name is a reflection of its natural wealth. Sri Lanka was affectionately known as Ratna-Dweepa which means Gem Island. Sri Lanka’s gem industry has a very long and colorful history.
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