The lapis lazuli is also a kind of jade with high popularity in the market recently. The color is dark blue and rich, like a quiet night sky. It is deep and clear, and contains the most sacred and tranquil spiritual power. It can be used as jade carving and jewellery. The blue has won the favor of the people of the East. With the increase in the price of lapis lazuli and the scarcity of raw materials, some unscrupulous merchants have started to use similar jade counterfeiting.
It is easy to be confused with lapis lazuli, such as sodalite, blue smectite and azurite. Counterfeit and substitutes posing as lapis lazuli are colored jasper, colored spinel, colored jade, imitation green gold, and dyed marble.
Similar jade features are as follows:
Sodalite (also known as soda stone), has a coarse crystalline structure, uniform color, hardness of 5.5-6, density of 2.15-2.35, refractive index of 1.48-1.487, texture is not as uniform as lapis lazuli, with orange and pink fluorescence.
Blue stellite, orange-red fluorescence, density 2.44-2.5g/cm3, refractive index 1.49-1.504. The azurite has a small hardness of 3.5-4 and a refractive index of 1.73-1.83, which is brittle and has no large dense blocks.
Colored jasper (also known as Swiss green gold), artificially colored with chalcedony and other fake materials, the hardness is large, 6.5- 7, refractive index 1.54-1.55. It has always been copied with colored jasper and glass containing copper inclusions. The lapis lazuli component copied by the Frenchman Gilson is very similar to the natural authenticity.
Colored spinel (also known as colored green gold), artificially colored with cobalt salt, the hardness is 8, the refractive index is 1.71-1.72.
Coloring jade jade (also known as twilight green gold), light blue, can not see pyrite, strong grease gloss, hardness 2.5-4, refractive index 1.56-1.57.
It is imitation of green gold, made of glass, made of colored dark blue sulfur or glass. It can't see pyrite, glass luster, shell-like fracture, and brittleness.
Dyed marble, the hardness is small, the knife is easy to inject, and the reaction with hydrochloric acid is obvious.
Wearing and purchasing lapis lazuli:
The lapis lazuli process requires dark blue, no cracks, no impurities, and fine texture. Lapis lazuli is suitable for women to wear, and it is unique to wear a few lapis lazuli on a small gold necklace or other jewelry. Women can also wear high-end elegant lapis lazuli bracelets, if you like, you can wear them, the effect is really good. Lapis lazuli is also suitable for men, and the men's dresses are decorated with deep-colored lapis lazuli ornaments to add a touch of manliness. Keep away from high temperature and overheating environment when wearing to prevent color loss. After the lapis lazuli jewelry is smeared, it must not be soaked and rinsed with water to prevent the surface dirt from penetrating into the interior. When shopping, it is separated from similar jade to prevent it from being fooled.
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