The best way to clean a crystal necklace is use a warm cotton towel to rub and dust off all of the finger prints and other smudges that could be on the necklace.
There are many ways to clean a citrine necklace. The best way would be soak the necklace hot water with some salt mixed in. Let the necklace soak and the water will become brownish. Take the necklace out and make sure you dry thoroughly.
The best way to clean a gold chain necklace is to place it in a solution of warm water and mild dish soap. If for some reason this did not do the trick, one can always take it to your local jewelry store. Most have a machine or solution that cleans gold chains.
The best way to clean necklace sets is to take the pieces to a jeweler or repair shop. Some jewelers and repair shops will offer free cleanings. Another method one might use is to soak the pieces in a mixture of baking soda and vinegar and to scrub the pieces with a toothbrush.
By hand in warm (not hot) soapy water. When finished, rinse the item under clean water and leave to dry and then polish with a soft cloth. Whatever you do, do not put crystal in the dishwasher. The best way to clean crystal or lead crystal is to was it in warm water with "clear" amonia. It's cheap, easy and you will marvel at the beauty of your crystal. The "clear" amonia cuts dirt, grease and old soap.
You can gently clean a gold necklace in warm, soapy water or if needed use an ultrasonic machine that you can purchase from a jeweler.
I can't tell if you mean "crystal" as in "made of a crystalline material" or "crystal" as in "made of lead crystal, which is not technically a crystal at all". Take it to a jeweler. There's not any simple foolproof way a layman could tell.
Crystal candlesticks are best cleaned with mild dish soap and soft cloths. To remove the wax, one can remove freeze the candlestick for about ten minutes, hardening the wax, and manually peel it off.
The best way to get a kink out of a necklace is with to fine pins. You must gently untangle the chain with the pins.
The best way to clean a dartboard is with a cloth and shining polish.
The best way to clean a suit is to have it professionally dry-cleaned.
There are a number of different ways to clean a vintage necklace. One way is to use a mild soap mixed in a warm water, and to brush the item with a soft brush. However, cleaning processes can vary depending on the metal or jewels used on the piece.
The best way to have clean water, is to boil it. Water purifiers are a close second, and although they still clean your water, they are not the best way to have clean water.