BEAUTIFUL ANTIQUE YELLOW GOLD FILLED POCKETWATCH CASE -VERY PRETTY. I’M NOT AN EXPERT ON POCKETWATCH CASES -PLEASE KEEP THAT IN MIND IF YOU ASK ANY QUESTIONS. I DON’T KNOW WHAT SIZE POCKETWATCH THIS WILL FIT. STUNNING DESIGN THAT IS SURE TO GET NOTICED. CONVERSION: 25.4mm = 1 INCH. WEIGHS: 47.6 GRAMS. When deciding on a gold jewelry item there are always many different terms that come up. The most popular are Solid Gold, Gold Filled, and Gold Plated. It is important to know the differences between Gold Filled jewelry and Gold Plated jewelry when making your choice. Solid gold is of course an exquisite piece of jewelry. Gold filled is the next level and is an amazing, quality alternative to solid gold. Gold plating is the lower level and these items tend to tarnish and can often times turn the skin green. Gold filled is an actual layer of gold-pressure bonded to another metal. Gold filled is not to be confused with gold plating as filled literally has 100% more gold than gold plating. Gold filled is much more valuable and tarnish resistant. It does not flake off, rub off or turn colors. As a matter of fact, anyone who can wear gold can wear gold filled without worries of any allergic reaction to the jewelry. Gold filled jewelry is an economical alternative to solid gold! Gold filled items are regulated by the government. These items are therefore so much better then gold plated which has no regulations at all. Gold filled jewelry is made from solid gold and filled with other alloys such as rhodium (a member of the platinum family), brass, and sterling silver. Gold filled wears, looks and lasts like solid gold because its outer surface IS solid gold. Everything you can see and touch is pure gold. In the jewelry industry the quantity of gold must be at least 1/20th by weight of the total product. Gold-Filled items are generally considered lifetime products, and the gold layer will not wear off, as it will in electroplated products. Gold filled jewelry is often called the wave of the future because it offers all the same characteristics as solid gold such as strength, durability and beauty.. But at a fraction of the cost! Caring for Gold Filled. Caring for Gold Filled items is as easy as caring for any gold jewelry. Simply keep away from chemicals, clean regularly with mildly sudsy water, rinse well and pat dry with a non-scratching cloth. Polish gently with a jewelry polishing cloth.