How do I test  a piece of jewlery for platinum content?
116188
You should take it to a jewlers they will be able to test it for you.
247586
Current market price for platinum is approx $1040 /oz. There is really no answer to your question because it depends on the quality of the diamond. Industrial diamonds can be purchased for less than a penny an ounce (< 50 cents per carat).\nTop quality diamonds can go for millions of dollars apiece. It all depends.
737415
There is a site specialized in precious metal values, you can find all the information regarding gold, silver, platinum etc, the name of the site is KITCO.COM.. ☺
607098
Show me the Gold first
428929
Just buy one, and take it to a jewlery store.  Almost all of them will engrave anything you bring in.
499286
The process is as follows - \n\nA good appraiser will clean your jewelry, point out needed repairs, and test the metal for content and karatage (fineness of metal). \nGemstones will be tested for authenticity, measured, and their weights estimated; they will be graded, plotted and/or Gemprinted as appropriate. \nYou jewelry will be photographed. \nThe appropriate market value will be assigned according to the type of appraisal. A cover letter will explain the appraisal, including its correct use.
706475
get a fake one from swarofsky -- nobody can tell but a jewler
693467
That depends on many factors. First of all, you would have to weight the rough stone and determine how many carats each was. Then, and most importantly, you have to judge the quality of the stone: intensity and quality of the color, inclusions, origin of the stone, and how much of that rough could be used into cutting the stone. \nIf all three stones were top quality (from top origins, and without treatments, top color, clarity and so on), it could be something like: Emerald, Ruby, Sapphire. \nStill, take into account that this goes by particular specimen (and this applies to many gemstones) and not so much by species. \nRough, uncut stones are hard to judge, since the inclusions are harder to see, and you don't get a good sense of color. \nYou can probably get a good piece of rough stone for not too much money. If you are looking to have it cut or polished, though you may be disappointed, as very little of it may be useful. \nIf you are looking to buy stones to wear, I recommend that you look into cabochon cuts: this cut makes the color look beautiful, whilst using lesser quality (clarity wise) stones, so it's not as expensive, and you may find big, beautiful pieces that are ready to be set. \nHave you considered buying spinels? They come basically in every color, and they are so shiny that they glitter even in their rough, unpolished forms. \nGood luck!
234263
It is stamped "825 China" probably because it is made in China. The 825 is the code for Continental Silver (European) and it means the alloy contains 82.5% Silver.\nThe millesimal fineness (a system of denoting the purity of Platinum, Gold and Silver alloys by parts per thousand of pure metal in the alloy) for 14 carat Gold is 585 and for 10 carat Gold is 417, therefore the Gold jewelry would be stamped accordingly.
618188
yeah sur..go 2 a jeweller
1096251
One easy quick & easy way to find out is the streak test. Rub the mineral in question across an unglazed porcelain tile. If the streak it makes is black then it is pyrite (fool's gold). If it is golden yellow then you have gold. You can find these tiles in your local home & garden shop or hardware store.\n\nAnother simple one is the hardness test. Gold has a hardness of 2.5 to 3 on Moh's Scale. Pyrite is 6 to 6.5. Glass has a hardness of about 5.5. According to Moh's scale you should be able to scratch glass w/ pyrite but not w/ gold. Pennies can also be used as their hardness is about 3.5.\n\nGold is found in several different forms or habits. It can be dendritic (vein-like) or massive as in nuggets. Upon examining pyrite more closely (perhaps w/ a 10x magnifier) you will see that while it resembles a gold nugget it is actually made up of many tiny little cubes.\n\nGold will not cleave whereas pyrite will. Cleavage is simply how a mineral breaks evenly due to weaknesses in its crystal structure. Pyrite has cubic cleavage so that when it is hammered it will come apart in perfect little cubes.
567188
Wow it is scary reading some of these answers... Take it to a reputable jeweler in your town and they will test it using  a touchstone and several different types of nitric acid to test. If this is done wrong you could ruin your piece of jewelry.... fire is certainly not your answer... gold meltsssssssssssss..most jewelers and I mean jewelers can tell just by looking, though sometimes even they need to test a piece...
122259
wow open question here...what is the end result and use. if it is say for automobiles it would be copper, nickle and chrome for cheep jewerlery sure gold last...many possible answers
1007608
How much do you want to spend?\n\nReal gold (99%) is very yellow in color and too soft for normal jewelry (it's soft somewhat like lead).  If you saw real 99% gold you'd never forget it - it is really quite yellow and nothing else looks like it.\n\nFor jewelry, you wouldn't even want real gold, and the things that are added (silver, nickel, etc.) to make it harder always add a 'silver' luster to it (they HAVE to if you think about it - they are silver in color).  Adding copper would shift it to the 'red' side, but it doesn't really make it like the original pure yellow color.\n\nFor gold bullion, you're talking about real money, so if there is any question as to its purity, you can take it to a precision laboratory and they can give you a report on exactly what is in it.  Cost is about $100 for 12 elements, and they will report how much silver, nickel, etc. down to parts per million if you want.\n\nI'd say for jewelry (unless you're going to spend a LOT of money), it isn't worth buying jewelry with a high gold content (partly for the reason you mention).  High gold content jewelry wears out easily and its value is always in question so is impractical (its too expensive to wear).  Buy Krugerands if you want an investment.\n\nBut if you've got money to burn, there is nothing like a real gold necklace or bracelet:  it is heavy, yellow, and feels great on your skin!  But unless you're Donald Trump, it's a waste (I don't think even he would wear pure gold).  The only reason to do it:  because YOU like it.\n\nDensity measurements would confirm solid gold, but they are a little tricky to perform and the accuracy isn't as high as the analytical measurements.\n\nThere is one test you can easily perform: ever heard of the acid test?  You can dunk the jewelry in acid, and if it starts foaming and dissolving, it's not pure gold - but then again, jewelry should not BE pure gold.
576940
try a coin dealer, or a Jewlery store, arts and craft metalsmith shop
573013
Try these Links for the Metalworking Jeweler\nhttp://www.metalwebnews.com/jewelry/jewelry.html
80305
Get it appraised at any jewelry store.