Irish silver hallmarks are official stamps applied to silver items to certify their purity, origin, and date of manufacture. A complete Irish hallmark typically includes a maker’s mark (initials or logo), a fineness mark (such as 925 for sterling silver), an assay office mark (the crowned harp), and a date letter indicating the year of … Read more
British silver hallmarks are government-regulated stamps guaranteeing silver purity, origin, and age. Five key mark types exist: Standard Mark (Lion Passant for .925 sterling, Seated Britannia for .958), Assay Office Mark, Date Letter, Maker’s Mark, and Duty Mark (1784-1890). Currently active assay offices include London (Leopard’s Head, established in 1300s), Birmingham (Anchor, 1773), Sheffield (Crown/Tudor … Read more
Gray gold is a real, man-made gold alloy that achieves its distinctive grayish hue by combining yellow gold with metals such as palladium, silver, copper, manganese, or iron. Gray gold doesn’t occur in nature and can’t be mined. Instead, all its components are sourced and alloyed separately. Gray gold is hypoallergenic and non-magnetic, though versions … Read more
Native American silver hallmarks are unique signatures, symbols, or initials stamped by Native American artists to identify their jewelry work. These markings appear on item backs, ranging from artist names and initials to complex designs featuring sacred objects and totem animals. Common stamps include “STERLING,” “SS,” and tribe-specific marks like the Hopi Silvercraft Guild sunface. … Read more
Looking for the latest statistics and facts on the topic of different learning styles? My updated guide for 2026 has everything you need, and more. Use this link to quickly jump to the KEY STATS section. All the references and resources I used in crafting my guide are listed at the bottom of the page. … Read more
Pure gold (24k) is chemically inert and will never turn green or discolor skin. However, lower purity gold jewelry can cause green staining because it contains metals like copper, silver, and nickel, and these oxidize when exposed to moisture, sweat and skin acids. Gold-plated jewelry is most prone to turning green once the thin gold … Read more
Looking for a safe US-based gold investment company to open your new precious metals IRA? Looking for the best company to help you get it done correctly, securely and without hassle? My guide to the top gold investment companies in the US for 2026 will tell you everything you need to know. In a hurry? … Read more
Soviet silver hallmarks were official stamps guaranteeing silver purity, origin, and age in the USSR. Until 1927, they followed Imperial Russian standards using the Kokoshnik (woman’s head in headdress). A new system adopted in 1927 featured a worker holding a hammer, Greek letters indicating assay offices, and purity numbers. In June 1958, the design changed … Read more
Red gold is a real gold alloy created by combining yellow gold with copper and trace amounts of silver. The high copper content (higher than rose gold) gives red gold its distinctive pinkish-red hue and increases its hardness and durability. Red gold is available in 10k, 12k, 14k, and 18k variants, with 14k and 18k … Read more
Green gold is a real gold alloy made from gold and silver, with its distinctive greenish hue coming from the high silver content. Small amounts of copper, zinc, and nickel are sometimes added for durability. Green gold exists in both natural and man-made forms. The natural variety is known as electrum, historically sourced from Lydia … Read more