Gloss and transparency
Opaque, polishing surface with bright shiny glass or subsets of adamantine luster.
Refractive index
1.762-1.770 ( + 0.009, – 0.005 ).
Double rate
0.008-0.010
Pleochroism
Having two colors, a general expression for the various shades of the color blue sapphire, ruby, two color is strong, other color sapphire mp.
The luminescence
Long wave ultraviolet light ruby red fluorescence can be found, and the intensity is higher than under long-wave short-wave, sunlight may also stimulate the red fluorescence, but Fe containing high fluorescence was weak. The sapphire no fluorescence, but containing Cr of Sri Lanka and the United States Montana sapphire sometimes pink fluorescence. While in Sri Lanka some yellow sapphire with apricot yellow or orange yellow fluorescence.
Hardness
Just red jade pendant corundum Mohs hardness is 9, is so far found in nature, hardness only to diamond second high hardness material.
Specific gravity
The majority of gem sample proportion changes in 3.99-4.00. Cr, Fe and other impurity elements affect the proportion value size, content is higher, the larger proportion of.
Melting point
High reaches 2000 to 2030 DEG c..
Corundum purging method
A brief history of the corundum corundum purification: Take 1 to 3 months to purify a. Even the opening also need regular cleaning this is a reason. Purification of the word in Latin and degaussing approximation, so called the degaussing. Many people often wonder why purification why degaussing, it is scientific and theological foundation. Purification is from the reform and opening up foreign in china.
Because of Taoism, Buddhism in Chinese culture influence, so feces, blood is considered very sacred, understand the history of that Zhang Jiao” the romance of the Three Kingdoms” chapter second” Liu Xuande cold splash dogs” in the article has introduced the need to prepare for the pig’s blood and Tiangui blood (women’s menstrual blood ). The romance of the Three Kingdoms is also described, Zhang Jiao had been broken, stool. In Tibet has a guest to use cow dung cleaning bowl of wine to celebrate. Buddhism in the nectar pills with the semen of men, women’s menstrual blood, and manure produced. So with the secularization of religion after the end of law era, many people understand become dirtier and more evil spirits.
This is the wrong understanding of Buddhism and Taoism profound meaning, but it also gives rise to the so-called long-term wear crystal, jade. Cultural industry is also the long-term wear process called” disc” that the longer the better, more intelligent and more, a lot of people think” disc” after dark, the color called” spectre” actually deep color is because dander tissue on the surface of articles exist for a long time after acidizing effect and the dark color, but scientifically, the dead skin tissue fungal growth, long-term do not wash is prone to skin disease and then evolved into skin cancer.
Now many people also have social scabies, because long-term do not wash, evil spirits increased spiritual view of the error. Corundum to regularly cleaning, because the physical properties of corundum decision can not use acidic or alkaline, cleaning agents, therefore in science with defense salt that neutral cleaning agent is correct and safe. Is the natural spar, jade has a crack, but artificial treatment filler and defense because salt can produce a reaction, so the commercial abandoned, with production in Japan because of so many blind xenophobic people hate.
Corundum purification method:
1: removing the need for purification of 1.
2: each bracelet or necklace with 10 grams of salt Charm
3: if using specialized cleansing bowl does not need to calculate the dosage of water, if it is used commonly in the home of a glass bowl, bowl, in accordance with the needs of each Bracelet 500 grams of water proportion increase. Water does not have mineral water, purified water, general water can. This is because the defense salt purification ability, far higher than the geode, so do not have strict requirements on the degaussing supplies.
4: if you need to pray, such as money, for marriage, happiness, in the completion step, remove” defense Xuan” also called charm charm Xuan paper, seal side to write on their birthday, wishes. Put the paper in the container. Paper can be folded. If you do not need to pray, to directly follow the fifth steps can be.
5: put the bracelet on ready to bowl, if the container has a charm for paper, put the bracelet on paper, into the water. If there is a filtering tool best defense salt on filtering tool, the tool into the water after filtration. The use of filtering tools to remove impurities and dust particles scratch tiger crystal.
6: waiting for 24 hours can be demagnetized. Waiting time can be more than 24 hours and 24 hours, but not short.
7: the purification used brine drained, the charm of paper dry out, after burning.
Note: corundum degaussing a continuous band 1 to 3 months. Frequent degaussing no harm. Salt sea salt, rock salt, charm is not big, but from the sea into the extraction processing. So the natural corundum no corrosive action.