1 thought on “How to see the purity of gold jewelry?”
Todd
Long Fengxiang jewelry has a history of 10 years. Novices are most worried about the purity of gold when they buy it. Let's share the methods to distinguish the purity of gold jewelry.
people who are not experts in jewelry always fear that the merchants will fake the purity of gold after they buy gold jewelry, and they will be the big losers. So, is there any way for laymen to easily identify the purity of gold
there are six methods for beginners to identify the density of gold:
1. Check the color
look at the appearance color of gold. As the saying goes, gold is "seven green, eight yellow, nine purple, and ten red". It has different colors due to different kinds of impurities and components. Pure gold is glossy and shiny, while mixed gold has small spots. 70% of the gold is yellow with blue, 80% of the gold is yellow, 90% of the gold is yellow with purple, and 10% of the gold is red
2. Weighing
the specific gravity of gold is 19.3g/cm3, and the fineness is closely related to the specific gravity. When the specific gravity is close to 19.3, the higher the pure gold content. Weigh the weight by hand to see whether it is commensurate with the size of the volume. Large and light shapes may be adulterated. However, it is generally weighed in the hands. If it is slightly heavy, it can be perceived that it is genuine gold jewelry. It can be seen that the gold is small and heavy. Be alert to bulky and light ornaments and carefully identify whether they are fake or semi fake
3. Try to be soft and hard
the higher the fineness of gold jewelry, the softer it is, and the less elastic it is. The real gold will have light marks when it is bitten by teeth or scratched by needles, and no broken lines when it is folded by hand. Low color steel hard; The heavy mixture is elastic, brittle and easy to break. Pure gold is softer and generally not used for inlaid jewelry. Therefore, any inlaid gold jewelry claiming to be 24K must be fraudulent
4. Knocking
two identical gold ornaments collide. The high-quality ones make a sound, the low-quality ones make a sound, and the mixed gold ones make a sound
5. Reagent method
that is, 45% nitric acid is used for spot test: gold and platinum are unchanged, silver is black, and copper is green foam. This is because gold and palladium are chemically stable and will not be oxidized in any state. They are also very stable in water, air, hydrogen sulfide or salt and alkali environments. Gold is not soluble in any single acid, but only in aqua regia (mixed solution of hydrochloric acid and nitric acid in volume of 3:1)
6. Check the stamping method
all gold jewelry produced by regular manufacturers are covered with the gold content and the manufacturer's mark, such as 24K, 22K, 18K, etc
if the ring on your hand is also gold, you may as well try the above method to see if the result is the same as your ID data
Long Fengxiang jewelry has a history of 10 years. Novices are most worried about the purity of gold when they buy it. Let's share the methods to distinguish the purity of gold jewelry.
people who are not experts in jewelry always fear that the merchants will fake the purity of gold after they buy gold jewelry, and they will be the big losers. So, is there any way for laymen to easily identify the purity of gold
there are six methods for beginners to identify the density of gold:
1. Check the color
look at the appearance color of gold. As the saying goes, gold is "seven green, eight yellow, nine purple, and ten red". It has different colors due to different kinds of impurities and components. Pure gold is glossy and shiny, while mixed gold has small spots. 70% of the gold is yellow with blue, 80% of the gold is yellow, 90% of the gold is yellow with purple, and 10% of the gold is red
2. Weighing
the specific gravity of gold is 19.3g/cm3, and the fineness is closely related to the specific gravity. When the specific gravity is close to 19.3, the higher the pure gold content. Weigh the weight by hand to see whether it is commensurate with the size of the volume. Large and light shapes may be adulterated. However, it is generally weighed in the hands. If it is slightly heavy, it can be perceived that it is genuine gold jewelry. It can be seen that the gold is small and heavy. Be alert to bulky and light ornaments and carefully identify whether they are fake or semi fake
3. Try to be soft and hard
the higher the fineness of gold jewelry, the softer it is, and the less elastic it is. The real gold will have light marks when it is bitten by teeth or scratched by needles, and no broken lines when it is folded by hand. Low color steel hard; The heavy mixture is elastic, brittle and easy to break. Pure gold is softer and generally not used for inlaid jewelry. Therefore, any inlaid gold jewelry claiming to be 24K must be fraudulent
4. Knocking
two identical gold ornaments collide. The high-quality ones make a sound, the low-quality ones make a sound, and the mixed gold ones make a sound
5. Reagent method
that is, 45% nitric acid is used for spot test: gold and platinum are unchanged, silver is black, and copper is green foam. This is because gold and palladium are chemically stable and will not be oxidized in any state. They are also very stable in water, air, hydrogen sulfide or salt and alkali environments. Gold is not soluble in any single acid, but only in aqua regia (mixed solution of hydrochloric acid and nitric acid in volume of 3:1)
6. Check the stamping method
all gold jewelry produced by regular manufacturers are covered with the gold content and the manufacturer's mark, such as 24K, 22K, 18K, etc
if the ring on your hand is also gold, you may as well try the above method to see if the result is the same as your ID data