![]() Synthetic gems have the same chemical, optical, and physical properties of their natural counterparts, but are a more cost-effective alternative to a natural gem. The molten powder repeatedly falls from the flame onto a rotating pedestal, creating a synthetic crystal, called a boule, which can later be faceted into a gemstone. Powdered chemicals (the building blocks of the gem) are dropped through a high-temperature flame. The flame fusion process for creating gems, also called the Verneuil process, is the most affordable and common synthesis method for producing corundum (ruby and sapphire) and spinel. Sapphire Gemstone Meaning Blue has long been considered the color of fidelity, and sapphires were once the preferred gem for engagement rings (before diamonds claimed that honor in the early 20th century). ![]() When two or more intersecting bands appear, a star pattern is formed. Red gemstones: Ruby, garnet, rubellite or red tourmaline, carnelian, and red diamond. Light that strikes the inclusions within the gem reflects off of the inclusions, creating a narrow band of light. For all practical purposes, it is the hardest. Corundum is a very hard, tough, and stable mineral. ![]() Sapphire is also only used to describe the gem variety otherwise it is simply called Corundum. ![]() Synthetic star sapphire exhibits the optical phenomenon called asterism, a star-like pattern created on the surface of a gemstone when light encounters parallel fibrous, or needle-like, inclusions within its crystal structure. Ruby is the red variety, and Sapphire is the variety that encompasses all other colors, although the most popular and valued color of Sapphire is blue. ![]()
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