<span>Characterized by necrosis of gingival tissues, periodontal ligament, and alveolar bone. Associated with HIV infections and immunosuppressive therapies. Severe and rapid periodontal destruction. Alveolar bone loss, resulting in lack of deep packet formation. </span>
I believe D is the answer.
Physical - the pink can be super light pink, or a darker pigmented pink. it is cut into many different shapes, like beads, spheres, etc.
http://geology.com/gemstones/rose-quartz/
Chemical - a chemical property is it is the chemical formula Silicon Dioxide, SiO<span>2</span>
Kjfihjdbvhjbvhjfdbvhibvhjdfbvhjbvhj
