Rutilated Quartz is a clear quartz with the presence of needle-like inclusions and strands of rutile within its structure. Rutile is a titanium dioxide mineral and sometimes contains large quantities of iron oxide. Rutile Quartz is a highly powerful and energizing stone, removing negativity while infusing positive energies. Rutile Quartz improves one's awareness of the world. It is said to ease feelings of anxiety, guilt and loneliness. Chemical Composition: Titanium dioxide often with iron Hardness: 6 - 6.5 Localities: Brazil, Switzerland, Madagascar, Mozambique and the United States. Sizing instructions: To measure your wrist size, wrap tape measure or thread around the desired area of your wrist and measure against a ruler. Size chosen will be accommodated to fit snug onto chosen wrist size. If you would like a more comfortable or looser fit we recommend adding 1/4 - 1/2 inch more to size. It is important to take good care of these jewelry pieces to avoid damage and breakage as some of them are highly sensitive and delicate. Always read our Frequently Asked Questions, Care Guidelines, Other Details and Policies prior to any purchase. It is important to research your particular stone of interest for specific care guides as some may be fragile and require more care. Please allow for slight blemishes, minor variations and natural flaws.