Standard Jewelry Abbreviations for Metals. Include your email address to get a message when this question is answered. By signing up you are agreeing to receive emails according to our privacy policy. Another way to express that is to say that tea makes up ninety percent of the mix. What does the number 5372 mean on a ring? Here to help you navigate your platinum jewelry purchase with education and insights into the latest styles from leading experts. Also, platinum isn't really white—it's actually a gray color. All modern platinum jewelry requires stamps indicating metal content. Identify this type of jewelry by any of these other marks: “Plat 950,” “Pt950,” … Each piece is stamped to mark its metal content, and you can also use the … This article has been viewed 612,667 times. The metal also looks stunning when combined with contrasting touches of 18K yellow gold. If the jewelry is stamped with the number 925 or the letter S, it is made of sterling silver. If a ring is stamped 925, is it platinum? Helped me to understand markings on my jewellery and I looked up the makers and found who made the, "An item of jewelry was given to me as a gift and was described as Platinum. ", "Well written and interesting to a confused reader. If the line stays, it's platinum. But how can you determine if jewelry you already own is made of platinum? Mined from deep within the Earth and … 350Pd. These six related metals belong to the Platinum Group of Metals, or PGM: As long as 50% of the alloy contains platinum and some other combination of metals above, the piece can be labeled as containing platinum. The platinum group of metals (PGM) are platinum, iridium, palladium, ruthenium, rhodium and osmium. Its heavy weight and durability make platinum a metal that will not wear away with constant use like gold. Choose an inconspicuous part of the jewelry to rub against the stone. in 1979, New York and now specializes in Fine, Antique and Estate Jewelry, consultations and expert witness work. By using this service, some information may be shared with YouTube. Approved. Determine what … This is important because silver-plated and sterling silver items look virtually identical to the untrained eye. Hallmarks are distinguishing characteristics that are stamped on gold, silver and platinum items - typically to identify the items purity. As platinum jewelry continues to gain market share, nearly every jeweler will have contact with this most precious metal. in 1979, New York and now specializes in Fine, Antique and Estate Jewelry, consultations and expert witness work. ", "I used the magnet method and it seemed to work fairly well. Most tests have acids specifically for silver. Jewelry stores who sell high quality platinum offer 950 Grade (95% pure platinum) jewelry. These markings indicate that your jewelry was made in Italy and is real sterling silver. References How about PTL on a fancy antique little baby picture holder? The acid may damage any smaller workings in the jewelry. Platinum derives its name from the Spanish word “platina,” meaning “little silver.” for 600 parts pure platinum and 350 parts iridium, "550Pt. Hydrogen peroxide can be found at most grocery stores. Platinum jewelry is the perfect choice for a lifetime of everyday wear. Here are some important platinum facts regarding content markings: The FTC is currently considering a request to allow manufacturers to mark jewelry as platinum even if it contains metals that are not part of the platinum group. If the solution turns white, the metal is 92.5% silver, or sterling silver. Platinum vs Silver Value. The most common alloy metals paired with platinum are copper, palladium, rhodium, iridium, and titanium. Could it be genuine? For example, a stamp that says “S925” indicates that the jewelry is sterling silver. I used the peroxide, "Great answers. Hydrogen peroxide won't corrode or damage your jewelry. If it turns a bluish green color, it's copper or another lesser metal. Both industry experts and jewelry retailers are slowly … It's a metal that's elegant when used all by itself to create a piece of jewelry, either a simple polished item or a design with engraved motifs. If the stamp reads "999", "S925," "925S", "Pure Silver", or "Sterling Silver", then your medal is made of genuine silver. Our Expert Agrees: When you're testing for platinum, you scrape a little piece of the jewelry on a stone, then you drop nitric hydrochloric acid on it. Platinum … If you have a piece of sterling silver jewelry with a .925 stamp that's attracted to a magnet, see a reputable jeweler to verify its authenticity. or 600 Plat. When you select platinum jewelry, you’re buying a product that consists of a metal that’s almost entirely pure – 90-95%. Purity is the game. Examine the color and weight of the piece, as well. for 550 parts pure platinum, 350 parts palladium and 50 parts iridum. PLAT means platinum, and the 950 means that is it 950/1000 or 95% platinum. Platinum content is usually expressed as the amount of pure platinum the jewelry contains in parts per thousand. Don't drop acid on clasps or other important sections. Platinum has come a long way from being a metal affordable only by the elite, being accessible even to middle class patrons. Medical Definition of platinum : a heavy precious grayish white noncorroding ductile malleable metallic element that fuses with difficulty and is used especially in chemical ware and apparatus, as a catalyst, … As with most metals for jewelry… Think about it like this: you mix up a huge bucket of fruit tea that contains 1,000 ounces--900 hundred of the ounces are plain tea and 100 are fruit juice. The easiest way to determine the metal used in your jewelry is by examining the hallmarks or markings. ", "The article contained knowledge for future reference. This article received 17 testimonials and 86% of readers who voted found it helpful, earning it our reader-approved status. I have a silver bracelet with marks "Italy" and "925". Although some alloys may be billed as platinum by jewelry sellers, there are stringent requirements for what constitutes a 'pure' platinum piece. Since about 1900, platinum came into use in a major way in the making and manufacturing of jewelry. Because it is both dense and malleable, it is ideal in jewelry production. If it dissolves, it's not. For instance, "600 Pt. Only metals marked with a 950 or 900 purity designation are considered high-grade platinum. ", "I tried the hydrogen peroxide, and it worked just like you said it would. High-end rings, bracelets, necklaces, and earrings are fashioned from Platinum. There's no question that there are many advantages to choosing platinum over white gold. The stone will scratch and damage a small section of the jewelry. If for instance, jewelry contains 50% platinum and 50% gold, that piece can not contain a hallmark indicating the piece contains platinum. Typically, you'll find metal content stamps near the clasp on necklaces and bracelets, on the inside surface of rings, and on the backs of earrings, pin… Platinum is the rarest and most expensive of the precious metals. wikiHow is where trusted research and expert knowledge come together. If you really can’t stand to see another ad again, then please consider supporting our work with a contribution to wikiHow. She contributed to The Spruce for over 11 years. The letters PT and PLAT are often used to indicate platinum is used. We know ads can be annoying, but they’re what allow us to make all of wikiHow available for free. Platinum is a heavy, precious metal, gray-white in color and noncorrosive. Great article! That makes the tea 900 parts per thousand of your mix. This article was co-authored by Edward Lewand. A quality mark contains information about metal content that appears on an article. Understanding the metal content of your piece can help you make sure you get the quality for which you're paying. Well, that certainly tells you something. If you can't read the markings on your jewelry, or there aren't any, read the article for tips on testing jewelry with an acid testing kit, a silver testing solution, or hydrogen peroxide. Its heavy weight and durability make platinum a metal that will not wear away with constant use like gold. Jewelry that contains at least 950 parts per thousand of pure platinum may be marked or described as "Platinum". "529" probably refers to a maker or manufacturer. Instead, it probably refers to the brand or manufacturer. Platinum is one of the most popular metals of choice for ring settings, because the strength and color of platinum … However, you can also use an 18-karat gold testing acid to identify pure or sterling silver. If you want to identify whether a piece of jewelry is platinum or silver, first examine the jewelry for any etchings in the metal. Platinum jewelry with 15% to 50% base metals also may be labeled "platinum.” These platinum/base metal alloys contain from 50 to 85% pure platinum, but the total of pure platinum and other platinum … He is a Certified Appraiser of the Appraiser Association of America (AAA) and an Accredited Senior Appraiser (ASA) of the American Society of Appraisers In Gems and Jewelry. test, and unfortunately, no bubbles. % of people told us that this article helped them. ", "The literature, characters, and photographic information helped! He is a Certified Appraiser of the Appraiser Association of America (AAA) and an Accredited Senior Appraiser (ASA) of the American Society of Appraisers In Gems and Jewelry. Graduate Gemologist & Accredited Appraiser. He completed his residency in graduate gemology at the G.I.A. This number doesn't match any common numbers that indicate the purity of the metal. Edward Lewand is a Graduate Gemologist & Accredited Appraiser with over 36 years of experience in the jewelry industry. If it’s stamped with the letters PLAT, PT, or the word Platinum, it is platinum jewelry. Please help us continue to provide you with our trusted how-to guides and videos for free by whitelisting wikiHow on your ad blocker. However, "925" would indicate that the jewelry is sterling silver. … Platinum is the most expensive of the precious metals. ", "Very helpful in determining if items are of value when disposing of them. Its density and weight make it a durable jewelry metal. "I have always wondered about the metal of a simple bracelet I have worn for over 30 years. This article has been viewed 612,667 times. This is due to a number of factors, including its rarity, higher levels of purity when used in jewelry, and the complex level of expertise and tools required when crafting jewelry from platinum. Only rhodium is more expensive than platinum. Platinum/cobalt alloys will usually be stamped as PLAT, Pt950, or possibly Pt950/Co. ", "Took silver test solution, and test stick works very well. If you can't read the markings on your jewelry, or there aren't any, read the article for tips on testing jewelry with an acid testing kit, a silver testing solution, or hydrogen peroxide. The US Federal Trade Commission, FTC, publishes guidelines for acceptable marking standards for platinum jewelry sold in the US. However, with a little practice, you'll be able to tell the difference in no time! 350 Irid." If the kit doesn't include gloves, buy some separately. I believe that the desire for "950" platinum is primarily driven by the fact that 950 is a bigger number than 900 - it looks better in "print" - so it must be "better". If it was marketed as platinum, chances are you got ripped off and were sold a silver ring, or the ring is silver and plated with another metal, such as rhodium or platinum. Instead, it is measured by its purity percentage. The bottle labels will indicate which metal they are used to test for. There is considerable confusion about the meaning of quality marks that are seen on jewelry … ", How to Identify Platinum and Silver Jewelry, https://www.youtube.com/watch?v=MiGrtLoJ2dY&feature=youtu.be&t=71, https://www.zales.com/jewelry101/index.jsp?page=preciousMetals, https://www.consumer.ftc.gov/articles/0294-platinum-jewelry, http://blog.stuller.com/working-with-platinum/?utm_source=Platinum_questions, https://www.pricescope.com/journal/overview_common_alloys_used_jewelry, https://www.youtube.com/watch?v=xQHoiWF7TkE&feature=youtu.be&t=127, http://www.danaraejewelry.com/is-my-sterling-silver-real.html, https://www.youtube.com/watch?v=MBseKUZ0OvA&feature=youtu.be&t=111, https://www.youtube.com/watch?v=xQHoiWF7TkE&feature=youtu.be&t=148, https://www.youtube.com/watch?v=MBseKUZ0OvA&feature=youtu.be&t=262, https://www.youtube.com/watch?v=sbFPreBkjQU&feature=youtu.be&t=28, http://www.chemicool.com/elements/platinum.html, https://www.youtube.com/watch?v=i6JQZGSyzuk&feature=youtu.be&t=23, https://www.youtube.com/watch?v=5uAonn4T-Us&feature=youtu.be&t=80, Riconoscere Gioielli di Platino e d'Argento, отличить платиновые украшения от серебряных, identifier un bijou en platine ou en argent, Bestimmen ob ein Schmuckstück aus Platin oder Silber ist, Mengidentifikasi Perhiasan Platinum dan Perak, Platin ve Gümüş Mücevherler Nasıl Tespit Edilir, consider supporting our work with a contribution to wikiHow. Purity is the percentage of pure platinum that is in your jewelry or item. The rest is an alloy, which is mixed with the platinum. There are 15 references cited in this article, which can be found at the bottom of the page. 350 Ir." If you doubt your results, test the jewelry again to be sure. Acceptable alloys that are used with platinum are grouped together. When considering platinum jewelry, the purity mark “950” denotes a composition of 95 percent platinum with a mix of other metal alloys, while “900” is made up of 90 percent platinum, and … Product knowledge is vital. 50Ir." The STERLING part indicates that your jewelry is real sterling silver. The greater the percentage of platinum in your jewelry, the more value the … The word platinum … Platinum holds fine gemstones firmly in place for the life of the jewelry when used for prongs and other setting components. What does this mean? Edward Lewand is a Graduate Gemologist & Accredited Appraiser with over 36 years of experience in the jewelry industry. Also, you must include the alloy present in the mix if the piece contains less than 85% pure platinum. Platinum does not wear away and holds precious stones firmly and securely. Note that a “950 Platinum” mark indicates that jewelry is 95 percent pure platinum, or 950 parts pure platinum out of 1,000. If you can't find … Platinum, rhodium and palladium are the most frequent ores used in platinum jewelry. ", "Great information at no cost. If you have a chance to compare platinum and silver side-to-side, it's easy to distinguish the differences between them. It is usually stamped or inscribed on the piece. Is a marking PLAT 950 silver or platinum? Thank you for the easiest, safest test. But before you pay your good money for a piece of jewelry, here is … Platinum is a rare precious metal primarily used to create fine jewelry. If you get any acid on your hands you will burn your skin. The DR probably refers to the maker of the jewelry. The acronym PTL refers to a kind of sheet metal and is not a precious metal. Platinum is one of the heaviest metals used to make estate jewelry. If you use the 18-karat gold acid test to test on silver, the line will turn a milky white color. The most common alloy used to harden sterling silver is copper, which is not magnetic. She has a special interest in vintage jewelry. The .925 stamp is reserved for sterling silver, and refers to the silver content, at 925/1000 or 92.5 percent silver. There are also hallmarks that can identify where the item was … Lay a towel down underneath the stone to protect your work surface from scratches. If you're still unsure about the authenticity of your jewelry, see a reputable jeweler. Platinum is the now-most-sought-after metal especially for engagement and wedding jewellery, particularly for rings. In the 1700's platinum was discovered in South America. 50Irid." Jewelry can contain different percentages of pure platinum. Using an Acid Scratch Testing Kit Use an acid testing kit on hard-to-verify jewelry. But, unlike gold, platinum is not measured in karats. Platinum is much denser than silver, so it will have more heft to it. Will now test my jewelry. To the untrained eye, platinum, silver, and sterling silver may appear very similar at first glance. My St. Christopher medal has stamped silver on the back. Platinum is a precious heavy metal. Because of its hardness and … ", "Helped to identified the real silver and platinum.". Platinum is a rare precious metal primarily used to create fine jewelry. So to verify I was doing it the right way, I tried a couple of my rings and the silver ones bubbled almost immediately.

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