西瓜碧玺，太阳和灰色钻石：Celine Daoust的简单但迷人的设计♦︎
比利时的骄傲，印度的感性，新时代灵性：你可以找到一个设计师，席琳Daoust的合成。她是符合客观诞生使珠宝，那些谁从小就喜欢和珠宝家玩的女性的一部分。她成为成年后，席琳决定在珠宝，斋浦尔的印度首都去，精炼宝石的经验。宝石，根据布鲁塞尔的设计师，也含有有益的性能超越了愉快的美感。不管你信不信，它提供席琳Daoust，以其偏爱碧玺和委托专家印技工工艺饰品，它们是有趣。其与印度联系的事实，但并不妨碍他的想象力引入一个绝对现代，西欧，北欧风格。即使你不知道石头的象征价值，你可以欣赏的规定，在某些情况下，看起来几乎是随机的，但实际上是由一个平衡的微妙感所决定的。这是比较困难的，事实上，使用不规则形状时达到对称和平衡卷：需要技巧，席琳Daous过人之处。
你会注意到：从多年的帕拉依巴碧玺碧玺已成为珠宝首饰的明星。但很少有人真正知道这块石头，它可以呈现不同的颜色，并经常被混淆与其他宝石。碧玺已经开始了它的上升在八十年代末年，当它被发现的各种强烈的色彩在帕拉伊巴，巴西的矿山。这些碧玺，蓝色和绿色的色调，有立竿见影的成功。价格这块石头迅速上升到超过$ 10,000克拉。但要注意：碧玺也被呈现碧玺的名字红色的石头。
组成。根据化学组合物中的电气石为结晶硼硅酸盐矿物，与铝，铁，镁，钠，锂或钾的元素。它是一种半宝石。这个名字来源于泰米尔和僧伽罗人turmali，用于在斯里兰卡发现不同的宝石。在过去的几个世纪，这个国家印度南部被带到了欧洲大量的碧玺。
颜色。电气石有一个伟大的各种颜色。发现在米纳斯吉拉斯州和巴伊亚州巴西各州的石头，但是，是一个独特的品种和鲜艳的色彩，蓝色和绿色。世界上最大的重达191.87克拉，并被列入世界纪录的吉尼斯。
它在哪。这里不仅是巴西。在20世纪90年代末含有托玛琳发现铜在尼日利亚。它最近已发现电气石也石块从莫桑比克，很像帕拉伊巴。出于这个原因，它通常被称为帕拉依巴碧玺碧玺也从莫桑比克的石头，但它是一个错误的（有时知道）：非洲石的颜色往往有点“比，巴西少辉煌。电气石非洲海岸也少得多。
也有深绿色碧玺坦桑尼亚，其中含有铬（相同的矿物质，颜色的翡翠）。并且也黄电气石，有时被称为金丝雀电气石。赞比亚中含有丰富的碧玺红色和黄色，这是比较便宜的。通过一个奇怪的巧合，最稀有的品种无色的achroite，是不是赞赏和价格低廉。碧玺也是在阿富汗和美国。在缅因州存款往往会产生晶体，薄荷绿，粉红色覆盆子。加利福尼亚州的矿床是众所周知的一个明亮的粉红色，但也有两个音。
Often confused with other stones, tourmaline is characterized by a wide range of hues and shades. No coincidence that the name comes from a Sinhalese word turmali, used to indicate carnelian and stones of different colors from Sri Lanka. The main varieties of tourmaline used in jewelry is one that defines the classification of the mineral as Elbaite, which is also a synonym for green tourmalines. Much used Rubellite also, which color are from red to pink, and the rare Indicolite, from a deep blue and exceptional luster.
Features Tourmaline is a dichroic stone: each crystal, usually very long, has two colors (one dark and one light), that change as intensity depending on the angle of observation.
Color There are many and with different shades. The most sought stones are the Paraiba tourmalines, homonymous field in Brazil, although the name is used for gems from different backgrounds such as Mozambique and Nigeria, when they have this range of shades: Caribbean blue, peacock blue, neon blue, copper green, neon aquamarine, azure, turquoise generated by the traces of chromium. A trace element, chromium, which gives its name to a deep green stones that are found in Tanzania, although the color in this case is given by the presence of vanadium. A great blue saturation, brightness and purity is the rare tourmaline Indicolite. There are, then, the Rubellite with its shades ranging from pink to vivid red, tourmaline Watermelon or watermelon, true wonder of nature, because two-tone: the center is red, surrounded by an outer layer of green, or vice versa.
Source The most important deposits are in Afghanistan, Pakistan, Russia, Burma, Sri Lanka, and United States (California and Maine). Many African countries have recently become major producers of tourmaline, particularly Madagascar, Namibia, Mozambique, Tanzania, Nigeria and Malawi.
Evaluation is not a simple thing due the amount of varieties and colors. The first thing to do is to examine the stone in sunlight: a green gem under an incandescent bulb may appear almost black, while a pink or red appears gray or brown. If, even under artificial light, keeps its natural tones, is likely to be a stone with a fine color. But beware, the primary color should be predominant for 70-75%. The rest of percentage is obviously a hue, ie a secondary color which, however, may change depending on the illumination, natural or artificial. Moreover, there is no general rule on dimensions and prices: some tourmalines are found only in small sizes and are used as beads in a very low cost, while others are more available in 10 or more carats. The evaluation also takes account of its clarity, which has three degrees defined by the Gia (Gemological Institute of America, the most famous center of research and teaching mineralogy of the United States): if the green tourmaline is usually classified type I, that means, has a slight inclusion visible to the naked eye, blue, orange, yellow, multi-color (except watermelon varieties) and some pink specimens stones have minor inclusions and are grade II, while the red ones , pink and watermelon belong to the third category III where noticeable inclusions are expect ed as it appears from the photos below. Tourmaline is normally not subjected to heat treatment and if this happens does not affect its value.
