I see no signs of use. Marked LJ 14K on the back.
LJ is the maker's mark. All metal guaranteed to be solid 14K gold. Measures 2 1/8 inches in length by 1 1/4 inches across. The six opals measure 3mm across. The ten natural diamonds measure 1mm across.The back pin functions perfectly allowing it to function as a brooch. The top loops allow it to function as a pendant and will accommodate a chain up to approx. Please feel free to ask any questions. The item "Stunning 14K Yellow Gold Ethiopian Welo Opal 10 Diamond Pearl Pendant Brooch Pin" is in sale since Wednesday, July 29, 2020. This item is in the category "Jewelry & Watches\Fine Jewelry\Fine Necklaces & Pendants\Gemstone". The seller is "pek1010" and is located in Leawood, Kansas. 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, Singapore, Switzerland, Norway, Saudi arabia, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Chile, Colombia, Costa rica, Barbados, Bangladesh, Bermuda, Brunei darussalam, Bolivia, Egypt, French guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Jordan, Cambodia, Cayman islands, Liechtenstein, Sri lanka, Luxembourg, Monaco, Macao, Martinique, Maldives, Nicaragua, Oman, Pakistan, Paraguay, Reunion, Uruguay, China.