The stone measures 10mm x 10mm x 5mm deep. I took photos of it in daylight, Tungsten (indoor light), and with a black light shining on it - which revealed red flecks in it. The color goes from vivid purple to cool blue.
This ring is a perfect size 7 and is stamped 10k inside - along with manufacturers initials GTR. The setting is a retro pinwheel with a textured top. This acid-tested positive for 10k - I guarantee it to be such.Weight is 3.5 grams. The item "Antique 10k GOLD 3.5ct Color Change Corundum ALEXANDRITE Solitaire Ring Sz 7" is in sale since Friday, November 6, 2020. This item is in the category "Jewelry & Watches\Fine Jewelry\Fine Rings\Gemstone". The seller is "jaysandi" and is located in Leominster, Massachusetts. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, Sweden, South Korea, Indonesia, Taiwan, South africa, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, Mexico, New Zealand, Philippines, Singapore, Switzerland, Norway, Saudi arabia, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Brazil, Chile, Colombia, Costa rica, Antigua and barbuda, Aruba, Belize, Dominica, Grenada, Saint kitts and nevis, Saint lucia, Montserrat, Turks and caicos islands, Barbados, Bangladesh, Bermuda, Brunei darussalam, Bolivia, Ecuador, Egypt, French guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Jordan, Cambodia, Cayman islands, Liechtenstein, Sri lanka, Luxembourg, Monaco, Macao, Martinique, Maldives, Nicaragua, Oman, Peru, Pakistan, Paraguay, Reunion, Viet nam, Uruguay, Russian federation.