转关于苏纪石的国外资料 PS: 原来舒俱来还有个名字-----杉石

Care

Athough reasonable care should be taken in setting and wearing this gem, it is relatively durable compared to some other popular cabochon gems. Sugilite is, for example, less susceptible to chemical attack than turquoise, and less sensitive to heat and drying than opal. It will need a repolishing from time to time if worn daily in a ring, and it should be protected from sharp knocks, but otherwise it is highly suitable for most jewelry uses.

保养
这种宝石在镶嵌和佩戴时应注意进行一定的保养，不过相对一些其它流行的大众宝石还是更为耐用的。譬如，苏纪石相对绿松石来说更为耐化学品腐蚀，相对欧泊则更为耐热或耐干。如果是每天经常佩戴的戒指，可时不时地擦拭保养，同时需避免用力触碰硬物。对于大多数人来说该品种确实是相当耐用的一种珠宝。

Value
The major value points are the depth and purity of the purple color and the degree of translucence. Within the opaque type, those which are the richest and purest purple color (without appearing black) and least mottled are the most valuable. It is the translucent "gel" form that commands the highest prices -- the very best pieces of which are generally set in gold and surrounded by diamonds . When pieces are mottled, particularly attractive patterns can rise above the norm in value, as is the case, for example, with the spotted "leopardskin" Sugilite.
价值
影响价格的关键点在于紫色部分的深度和纯度以及整体的透明度。对于不透明的品种，紫色越多越纯正（不带黑色的）且杂斑越少的则越贵。宝石级的半透明体是最好的品种，价格也是最贵的，一般都是采用金镶钻的形式加工。带有斑点的，特别是表面图案较美的则价格要高于普通品种，比如” 豹皮苏纪石 “。