Guide language: International auctioned the market to go up recently, of the person that the chromatic gem that is a delegate with sapphirine, blue diamond is collected again chase after hold in both hands. This week, a value between 10 thousand dollars of 5.8 million ~850, heft 7 carat “ be too busy La Zuan “ landed Geneva auction to meet; And in home market, one hefts 484 carat, price 800 thousand yuan “ Billiken stone “ the international gem exhibition that sapphirine former Shi Ye landed a Zhou Anzhou to hold. So, to the common Tibet home with scant experience, how should distinguish sapphirine, blue diamond and blue fluorite?
Blue fluorite
Geneva auctions the 7 carat blue diamond that can appear
PK of market price case: La Zuan soares steep fall blue treasure is made the same score go up firmly raise
Mr Hou Shunyu introduces general manager of extensive land gem, sapphirine and blue diamond are not valence does not have city, its present the state that gives growth of year after year in the demand of Chinese inland.
Sapphirine comes for years basic be to work up, arrived 2000 2006 time paragraph, the price rose in all 120% , after 2007, although suffer financial crisis concussion, but price change is not big. And the price of blue diamond appears the route that after going out to soare first, keeps balance to steep fall again, with was watershed 2008, 5 years before this in, rise in price extent exceeded 2 times, and keep balance basically 2008, the end of the year began 2008, the large volume blue diamond of above of 1 carat weight steeped fall up to now 35% , the price of minor volume blue diamond also fell at least 15% .
On Guangzhou market, will look commonly, price of 1 carat sapphirine goes to 20 thousand yuan in 5000 yuan more between, the price of 1 carat blue diamond fluctuates in 50 thousand yuan more, and the white diamond price of 1 carat weight is as high as 70 thousand ~10 10 thousand yuan. Compare to it, be called merely the blue fluorite of half gem is much with will calculate the price, nearly 1 year time is in Guangzhou city, price of chunk blue fluorite declined nearly 1 times.
Value evaluates PK: Blue diamond color rank differ not quite
Blue diamond and Bai Zuan are same, weight, cut labour, color and be being spent completely is the main index that measures its value. But all present blue of light of great capacity as a result of blue diamond, color rank differs not quite; Measure a level to the color of blue diamond, at present the unable to decide which is right inside travel. Think commonly, contrast lapidary smooth stave, color lies between white and sea blue “ baby blue “ the blue diamond with highest value be consideringed as. Besides, gray impurity jumps over little, glossiness to jump over good product value not to poor more.
Remove blue diamond quite, it is more a few more difficult that the value of sapphirine is measured, because the international price system of red sapphirine is original far not as normative as diamond. Nevertheless, alleged sapphirine, blue color also wants certainly “ “ , included melanin has been jumped over lesser, deep sapphirine wants than deep-sea blue gem commonly more costly, because former color is more beautiful beautiful. Besides, sapphirine also has corresponding weight, clean degree with the index that cut worker worker, include foreign matter to jump over effect of little, reflex to jump over good sapphirine value not to poor more.
Compare with sapphirine, blue diamond, the color of blue fluorite is not a problem, the value of all sorts of color differs not far, there is too big value difference between each other. Be being spent completely is the level with measure blue fluorite the most important, whether crack, impurity decided the sale price of blue fluorite more. And the weight of blue fluorite and its price also do not assume direct proportion progress, show geometry however degressive trend, the market value of the blue fluorite of bulk of 5 × 5cm is in a 5 × more 200~400 yuan between, but if was become by carve 10 × of 10 × 10cm bulk size, although bulk is 8 times bigger, the price also achieves 1000 yuan at most however.
Differentiate PK: Sapphirine cuts blue diamond of elliptical egg face to cut 57 circle
Sapphirine: Color slants concentration of deep, colour is high, present a deep-sea blue commonly or blue-black, with 7 × 9 or 6 × the scale of 8 is become by cut figure of elliptical egg face, also have accidentally circular cut, but do not make much face cut.
Natural blue diamond: Appear commonly piece weak sky-blue, colour density is low and often float a gray, majority is become by cut of 57 faces circle, it is diamond kind the standard cut means of the product.
Blue fluorite: Hardness is small, feel more lukewarm embellish, won‘t produce true gem the sort of cold hard biting icy feeling; Ju Laying stone is opaque, there is crack more among, send out those who give quietly elegant inferior smooth blue, won‘t send out a diamond and gem the sort of dazzing 7 colour burnish.
False gem of artificial coloring complex: Diamond of apparently weak also on glossiness Yu La and sapphirine; And the course synthesizes processing, some volatilization is embraced without true sapphirine already among the garrulous account other people of Cheng Yunduo condition, the much angle glare that also lacks diamond lustre.
Civil: Jing Nan