![]() Moissanite has twice the fire of diamond though-so it has to be the right amount of fire.ĭiamond is a singly refractive material. If you don’t see fire, you are not looking at a diamond. Do you recall turning a diamond and seeing all the colors of the rainbow? That is called fire. Vitreous: this luster looks like glass (and more commonly is glass).ĭiamond has fire.Bright Vitreous: this luster is glossier, and can be seen in similar looking stones like white sapphire.Sub-adamantine: this is a bright luster, but not quite as bright as adamantine, and can be seen in gemstones such as zircon. ![]() What’s not normal: To compare, here are the lusters you may find in some other materials that look similar to diamond, but aren’t diamond: The word comes from the Latin word “adamas,” which means “diamond.” That means they are bright and reflective, almost mirror-like. What’s normal: Diamonds have an adamantine luster. As one becomes accustomed to seeing many diamonds, as well as diamond simulants, luster becomes a factor that helps in quick determination of whether a gem material may be the real deal or not. Luster relates to the quality and quantity of light reflecting from the surface of a material. If you see a trigon, your diamond is certainly natural. Sometimes it is left on a diamond girdle to maintain carat weight. Therefore, when you look at diamond facets with your eye, the edge of every facet will be sharp, due to the hardness of the stone.Īnother external feature, an adorable upside down triangle-looking feature called a trigon, occurs naturally on diamond rough. In fact they score a ten on the Mohs scale of hardness. It is important to note that diamonds are hard-the hardest natural gemstone. This is an easy way to compare diamond to softer materials. What’s not normal: If the facet edges look a bit dull or worn overall, or not very sharp, you can rest assured that the stone is not a diamond. What’s normal: Grain lines, extra facets, abrasion, scratch, burn mark, polishing lines, trigons, and sharp facet edges. If you see them in a diamond, the gem is not a diamond.Įxternal characteristics are features found on the surface of the diamond, but do not penetrate the stone. For example, bubbles are a signature inclusion found in glass. ![]() What’s not normal: Certain inclusions just don’t belong in diamond. solid, mineral inclusions within the stone, such as garnet, spinel, pyroxene, olivine, or graphite), bearding, bruise, graining, knots (caused from twinning), pin points, clouds, cleavage (a line of weakness in a diamond), chips, cavities, fractures/feathers, or a natural (part of the natural surface left after polishing). Inclusions are features that are either wholly enclosed within the gemstone, or extend to the gemstone surface. The first step to spot a fake diamond is inclusions. The features to check in order to ascertain whether your diamond is real or fake are detailed below. ![]() With this, a diamond can also be checked while still in a jewelry mounting. A 10x loupe is great tool for checking many of the features listed below. ![]()
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