Learn About Gemstones

Learn All About Sapphires, Emeralds, Moissanite, Rubies and Semi-Precious Gemstones


• The word sapphire comes from the Latin sapphiru which means blue. • Sapphires come in a rainbow of colors from the vibrant blue of the midday sky, to the navy blue of the night sky, yellow reflections of the sun, and the pink of dawn and dusk. Israel-Diamonds also offers sapphires in more unusual colors such as purple, orange, green and black. • Sapphire is the birthstone for September. It is also a traditional gift for those celebrating 5th or 45th anniversaries. • Sapphires belong to the family of minerals known as corundum. They are among the strongest natural gemstones in existence, second only to diamonds. • Sapphires have been found across the globe in countries as far apart as Australia and Kashmir, China and Cambodia. The majority of sapphires for sale at Israel-Diamonds originate in Madagascar, Kashmir and Sri-Lanka. • The most valuable sapphires are a mid color blue with a concentrated hue which remains constant under all lighting conditions. • Sapphires of up to 2 carats are common. Larger sapphires of up to 10 carats are not difficult to find in a variety of colors. • The largest cut and polished sapphire, with a weight of 61,500 carats is the Millennium Sapphire. • Sapphires are often associated with loyalty and dignity and are a favorite gemstone for royalty. • Most natural sapphires undergo heat treatment to improve their color and clarity. This industry-accepted practice results in a permanent enhancement and       helps protect against accidental chipping or breakage.


• The word emerald comes from the Latin smaragdus which means green. • Emeralds come in various shades of green, from deep darkish green to soft green, fine grass green and light green. • Reflecting the color of spring, emerald is the birthstone for May. It is also a traditional gift for those celebrating 20th or 35th anniversaries. • Emeralds are relatively strong gemstones, registering 7.5 - 8 on the Mohs scale of hardness. While they are fairly resilient to knocks, they can be chipped or ;     scratched. • Emeralds have been found in many countries, including Colombia, Russia and Brazil, which is the world's largest supplier of emeralds. Most of the emeralds     for sale at Israel-Diamonds originate in Madagascar, Colombia and Zambia. • The most valuable emeralds are a pure, vivid green with a concentrated, pure hue which does not include traces of other shades such as brown or yellow. • Most emeralds have inclusions (imperfections). It is extremely rare to find a natural emerald without flaws. That is why a top-quality natural emerald will often     be worth more than a top-quality diamond of the same weight. • One of the largest emeralds discovered is the Mogul Emerald, weighing in at 217.80 carats. It is about 10 cm high. • Emeralds are often associated with magic and mystery. The color of nature, they are said to promote a calm and peaceful spirit. Almost all natural emeralds       undergo treatment to improve their color and eliminate visible imperfections. The industry-accepted practice is to use a green-tinted oil to fill in any cracks and     reinforce the emerald against unintentional chipping or splintering.


• Moissanite is one the most brilliant and fiery gemstones in the world. • Possessing fire, brilliance and luster that far surpasses even that of a diamond, Moissanite twinkles and sparkles unlike any gemstone on earth. Composed of     carbon and silicon, the Moissanite crystal is one of the hardest and toughest known elements on earth, making it extremely resistant to scratching, chipping     and breaking. • Moissanite, also known as silicon carbide, was first discovered in minute quantities from particles carried to earth by a meteorite 50,000 years ago. It is now     available as faceted gemstones in a large array of shapes and sizes. • Unlike other brilliant stones that cloud and dull with time, Moissanite is guaranteed to never lose its optical properties. Therefore, it will be every bit as     beautiful, fiery and brilliant generations from now as the day you purchase it. • Moissanite is NOT a diamond. Yet they get confused so often because they are practically indistinguishable by the naked eye. In fact, even under a     microscope they are rarely different. A gemologist has to have a special tool to determine if a stone is a diamond or moissanite.


• The word ruby comes from the Latin rubens which means red. • Rubies are found in shades of red, from rich darkish red to pigeon blood red and pinkish red. The red hue comes from traces of the mineral chromium. • Ruby is the birthstone for July. It is also a traditional gift for those celebrating 15th or 40th anniversaries. • Rubies are extremely strong, registering 9 on the Mohs scale of hardness. They are as resilient as sapphires and only slightly softer than diamonds. • Rubies have been found all over the world, including in Myanmar (formerly Burma), Africa, Australia and the USA. The majority of rubies for sale at Israel-    Diamonds originate in Myanmar, Thailand and other locations in Asia. • The most precious rubies are those with a full, rich red color with just a hint of blue tones. Originally, the finest rubies were mined in Myanmar and it is from     there that the term Burmese ruby began to describe the finest rubies. • Almost all rubies have flaws. Rubies without imperfections are exceptionally rare and command prices even higher than diamonds of a similar weight and     quality. • The world's largest ruby is owned by a Chinese jewelry company. It weighs 8184 g (40920 Carat) and measures 5.11 x 5.43 x 5.70 inches. • Rubies, because of their brilliant red hues, are often related to themes concerning the essence and vibrancy of life. If there is one gemstone that represents     the passion of love, it is the ruby. • Almost all natural rubies are treated to improve their color and strengthen them. This is standard practice in the jewelry industry and is accepted by the     American Gem Trade Association and Israel-Diamonds.