Black Star Sapphire 6x3mm, 8x4mm, 10x5mm Flat Back Marquise Loose Gemstone(s)

These are not beads. Black Star Sapphire 6x3mm, 8x4mm, 10x5mm Cabochon Marquise Loose Gemstones. Ships via USPS for FREE. Alternative shipping methods are available for an additional fee. Please note: (1) The treatment for this gemstone is heating. (2) There may (sometimes, not always) be cavities present on the back of the star sapphire. These cavities are the result of exsolved hematite at the basal parting and is very common. Just to clarify, this is not damage to the gemstone. There are three ways that this is dealt with. (a) Sanding down the bottom further to smooth out the cavity, which often results in destroying the star effect in the gemstone. (b) Filling the cavity with a resin, which results in a significant variance in the carat weight of the gemstone, thus resulting in the customer paying significantly more per carat. (c) Ignoring the cavity. In most situations where a cabochon is used, it is being set into a bezel type setting and the cavity will not be an issue. This is my preferred method as ripping off my customer with significantly higher prices is not an option (I don't like losing sleep over guilty feelings). If you have a setting that will expose the bottom of the gemstone, please notify me (before buying) to be sure I can provide one that best suits your situation. (3) Often but not always, the gemstone's, bottom is rounded a little because the cavity was able to be removed without destroying the star effect. (4) Often, but not always, the gemstone will be low dome. This is common with natural star sapphire. It is important to communicate any restrictions (before buying) that you may have with your setting so I can best meet your needs and avoid disappointment. Otherwise, your order will be fulfilled through random selection. If you have any questions regarding this gemstone, please feel free to message me. I encourage you, if you are not familiar with this gemstone to research before buying. The GIA has a wealth of information online and they are a trusted professional third party source for knowledge. Thank you for taking your time reading this rather lengthy part and thank you for your business.