Meteorite Sterling Silver Ring: a genuine Campo del Cielo iron meteorite fragment in 925 sterling silver, US size 6. Set in sterling silver, the meteorite’s natural texture brings a refined strength to the piece. What Makes This Piece Stone: a genuine Campo del Cielo iron meteorite fragment Metal: 925 sterling silver Size: US 6 Style: Meteorite Sold individually — you receive one ring About the Stone This meteorite is comprised of nickel, iron and other trace metals — actual material that fell from space. It was discovered in 1576 by Spanish explorers in Chaco, Argentina; thousands of pieces have been found near the impact craters, the largest weighing an immense 37 tons. Scientists estimate the fall at around 3,950–5,800 years ago, from radiocarbon dating of charred trees in the vicinity. Campo del Cielo is Spanish for "Field of the Sky" — a piece of iron older than any human artefact you can hold, that arrived while the pyramids were being built. Wearing & Care Rings take more knocks than any other piece of jewelry: put it on last, after lotion and perfume, and take it off for hand-washing, housework, gardening, the gym, swimming and sleep. Sterling silver tarnishes slowly in air; a silver polishing cloth keeps it bright. Iron meteorite rusts: keep it dry, wipe it with a soft dry cloth after wearing, and do not handle it with wet hands or leave it in a humid bathroom. A light coat of mineral oil now and then protects the surface. Never cleanse it with water or salt — use moonlight or a smudge. US sizes. Not sure of yours? Measure a ring that already fits across the inside — 16.5 mm is a 6, 17.3 a 7, 18.1 an 8, 18.9 a 9. A Note on Your Selection Every stone is natural, so no two are the same — color, pattern and depth vary from one to the next. You will receive one ring similar to the ones pictured, chosen with care and intention by a Sacred Crystals caretaker. We trust the right piece will find its way to you. Pairs Well With Campo Del Cielo Iron Meteorite Pendant, Selenite Stick, Black Tourmaline Tumbled Pocket Stone.