1, hardness test
Diamond is the hardest natural substance known, and nothing can mark it. If you can mark it, it's definitely not a diamond.
2. Thermal conductivity test
At the same time, breathe into the diamonds and other similar objects to be debated. If it is a diamond, the water mist condensed on its surface should evaporate faster than other objects, because the thermal conductivity of the diamond is high.
Step 3 Observe the reflected light
With a magnifying glass, it can be observed that the waist of the diamond presents a very fine matte shape, and the reflected light shines. This characteristic of diamonds is unique.
Step 4 look at the growing point
Observing under a magnifying glass, there are often grooves and triangular growth points on the crystal face of real diamonds, but there are three kinds of fakes: ① Ordinary glass with alumina is easy to get into the wrong place, because the refractive index and dispersion increase, but the hardness is lower. (2) Imitated with chemically synthesized sapphire and colorless spinel, the hardness is similar, but the refractive index is low and has birefringence, and the double image can be seen under a magnifying glass.
5, similar chemical composition test
The chemical composition of pencils is carbon, just like diamonds, but the physical structure is different, so many people use pencils to detect the authenticity of diamonds, which is a practical and effective method. When identifying, the diamond should be wetted with water first, and then gently scratched with a pencil. On the crystal face of a real diamond, there is no trace where the pencil crosses, but if it is not a diamond, but a material such as glass and crystal, it will leave a trace on the surface. Under normal circumstances,
6. Artificial zirconia imitations have higher hardness and better refraction, but they will reflect more colored light when rotating, which is obviously different from the genuine ones that only reflect weak yellow and blue light when rotating.
Maintenance of diamonds
You need to know how to maintain a diamond and make it shine forever. A smooth diamond not only reflects light better, but also looks bigger than those diamonds stained with skin oil, soap, cosmetics and kitchen grease. Diamonds are sticky to oil, so they should be washed once a month to keep their luster.
The following methods can be recommended:
Cleaning solution cleaning method uses a small bowl or teacup to hold warm water, and a proper amount of neutral detergent is mixed in the water. Soak the diamond in water, brush it gently with a toothbrush, then wrap it with a sieve, rinse it with warm water under the tap (and finally pat it dry with a soft cotton-free flannel).
Cold water immersion method: Use a small bowl or teacup, mix a proper amount of clean water with household Armenian water, immerse the diamond in the water for about 30 minutes, then gently brush the diamond back and forth, left and right with a small brush, then wave it in the water for a while, then take it out and dry it with a paper towel.
Quick cleaning method Buy a bottle of brand-name jewelry cleaning solution, together with the attached container, and clean the diamonds according to the instructions.
Other tips for caring for diamonds: Don't get chlorine bleach on diamond jewelry when doing housework. Will not damage the diamond, but will make the inlay fade or discolor. Don't wear diamonds when washing dishes or doing rough work. Although the diamond is hard, according to its grain direction, it may be damaged by hard impact. Take your diamond jewelry to the jeweler once a year to check whether the inlay is loose and worn, and then fix and polish it again.
How to maintain platinum diamond ornaments
Simplicity, naturalness and decoration have become the theme style and development trend of platinum jewelry. Whether you want to buy this kind of products or not, if you go to the market, you will find a phenomenon: under the trend that American diamonds embody luxury and brightness, permanence and purity, and embody the concept of preservation and proliferation, platinum diamonds have become the favorite of more and more people. Just as platinum diamond ornaments enter the homes of ordinary people, its maintenance has become a very concerned issue.