Russian materials are generally better in gloss than mountain materials, but the density is generally lower. This visual inspection is made of Russian material, so it is suggested that the landlord test it himself (water measurement method:

Pour water into the cup, put it on the jewelry scale, and zero the reading of the jewelry scale;

2. Hold the silk thread, suspend the measured object in the water, and take the first reading without touching the wall or sticking out of the water. For example: 8.5g

3. Lift the measured object with silk thread (throw it directly when it can't be fixed with wire), and then completely sink into the bottom of the cup to get the second reading. Such as 25.4g g.

4. The first reading divided by the second reading is the relative density of the measured object. Example 25.4/8.5=2.988 .........

)。 The density below 2.92 is 100% Russian material.

As for whether it is the CPSU or not, the convenience of transportation has absorbed each other now. I can only estimate that this is Su Gong, but I'm not sure. In addition, it is also bold to dare to give a quotation. You dare to give a price without brand size and weight! 2000 is enough to buy a Russian bracelet!