Star gemstones
Star gemstones are gemstones that have light phenomenon called "asterism". It shows as 4 or 6-rey star on the top of the gemstone and it moves when the angle of the light changes. The phenomenon is similar to cat's eye. Asterism can be found in sapphire, ruby, garnet, diopside, quartz. The better the star pattern, the more precious the gemstone is.
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- Shape: Oval
