Identify gold need to have certain experience. Simply introduce some identification method. But still had better to store!

(1) see color: gold jewelry purity is high, the more deep colour and lustre. In no gold according to the following colour and lustre is sure general quality (in green gold as criterion. The so-called green gold is gold inside contains only silver composition); Deep red yellow looks at 95% above, light red yellow 90-95%, light yellow for 80-85%, greenish yellow 65-70%, the color green with white light only 50-60%, light yellow and white is less than 50%. Usually say seven green, eight yellow, nine red can be for reference.


(2) phase modulation weight: the proportion of gold is 19.32, heavier than silver, copper, lead, zinc, aluminum and other metal. As the volume of gold silver heavy than above 40%, than copper weight 1.2 times, 6.1 times heavier than aluminum. Gold jewelry in hand "should be sinker feeling, false gold jewellery is light sleep. This method does not apply to Mosaic stones of gold jewelry.

(3) see hardness: pure gold soft, hardness is low, with his nails can off shallow mark, teeth can leave the dental, quality high gold jewelry than former low soft, copper the more the hard, bending method also can test hardness, pure gold soft and easy to bend, the lower purity, the not easy bending.

(4) listen to voice: quality in more than 99% of the gold to hard court chucks, will be issued, the dalai sound, sound no rhyme nor stretch. False or quality low gold voice brittle without depressing feeling, general send out "dangdang" sound, and sound is lingering sound, after landing severe beating.

(5) with fire: fire is going to identify act the role of article burn red (don't make adorn article melting deformation), after cooling observation color changes, such as the surface is still in the original golden colour and lustre is pure gold; Such as color dark or different degree black, is not pure gold. General quality is lower, the color is more strong, all black that is false gold jewellery.

(6) see mark: domestic gold ornaments are according to the international standard purification made into, and play all remember, such as "24 k" marked "pure gold" or "solid gold"; 18 K gold, marked "18 K", "quality is lower than the loK, according to the rules, can't play K issued by the number. In society at present commonly used outlaws create false brand, imitation stamp, with thin gold, the gold, or even brass pretend to be of gold, so gold ornaments to identify according to the samples comprehensive decision to determine the true and false and quality high and low.
This paper from the http://www.hijewelryshop.com