== == White gold is "labeled" by the karat weight on the inner rim of the ring....ex: 10K, 14K, etc... Also, real gold will leave a black mark on your face if wearing base makeup...so I have always been told and found to be true as I only wear white gold or silver...I personally do not like yellow gold.
Adding to prior response; Marks on a piece generally don't mean much unless purchased from a reputable jeweler.
Buy a nitric acid testing kid and follow the instructions.
Also try using a magnet on the piece, if it's attracted to a magnet- don't bother buying the rest kit, it's not real.
Another way to tell between silver and gold- Silver is slightly more gray, gold has a brighter shine to it, silver will tarnish fairly quickly (5-20 years)- gold takes 100+ years to tarnish.
One way to tell the difference between sterling silver and platinum is to look closely at the color. Sterling silver will have a grayish look to it, while platinum will look like it is almost white.
The 925 hallmark is indicative of 92.5% Sterling Silver.
925 is not even gold....it is sterling silver. 585 is 14K gold. As of today, 3/4/10, sterling is 17.70 an ounce and gold is 1132.00 an ounce.
silver and white
Yes, in this case, the ring is not white gold but in fact sterling silver. Acceptable quality marks for sterling silver include: sterling, ster and .925. Sterling silver is an alloy of silver containing 92.5% by mass of silver and 7.5% by mass of other metals, usually copper.
Sterling silver is stamped "sterling" or "925". Other metals may say "nickel free," "stainless," "surgical steel," "silver plated," "WGF" (white gold filled), "nickel silver," "Peruvian silver," "German silver," "Tibetan silver," "Bali Silver," and a number of other things, but NOT sterling or 925. That's the key.
925 is a stamp on sterling silver to indicate that it is 925 parts silver to the 1000.
The physical difference between silver and platinum is in terms of color. Pure silver is more whitish in color while platinum is more grayish than white. Silver has a lower density than platinum.
It is very easy to tell the difference between a yellow perch and white perch. However, many people mistake white perch for silver bass. If you eat the fish you catch, there is a big difference in the taste of white perch and silver bass. White perch are very good; silver bass are a lot fishier tasting. The easiest way to tell the difference between a white perch and silver bass is by looking at their stripes on the side of the fish. White perch only have 1 solid stripe which is high up on their back. Silver bass, on the other hand, have five stripes on their sides and appear to be more silver in color. There are other differences between the two fish and hopefully in the future I can post a photo of a silver bass alongside a white perch and describe them to you.