Riyogems 1PC Blue Chalcedony Cabochon 13x13 mm Trillion Shape A+ Quality Gemstone. Blue Chalcedony Gemstone is Birthstone of December Month . Blue A+ Quality Blue Chalcedony Gemstone Birthsign is astrology Sagittarius. Blue Cabochon Blue Chalcedony 13x13 mm Trillion Shape Gemstone (A)Riyogems 1PC A+ Quality Cabochon Blue Chalcedony 13x13 mm Trillion Shape (B)For Item issue:- Actual Gemstone Color and Gemstone Image may be slightly some different due to Lighting and photographic sources or your individual monitor settings. (C)For Return Policy :- After you get the items we offer 30 Days Return policy for the items. The Buyer Can send back the items if there is any issue with the items. The buyer will pay the return shipping charges. We Will send a replacement items, if there is any manufacturing issue with items. (D)For Item Confirmation:- Please Make Sure to cross Check for Gemstone Size according to the Gemstone Shape chart provided in images. if you have any doubt or want correction for Gemstone size please message us. (E)For Custom Order:- we can make Gemstone your choice according. Example- Gemstone size change and Shape change. and your Gemstone Type we can make.