2.55 Carat Diamond Antique Cushion Cut: D VS2, Color & Clarity
www.artofplatinum.com Diamond: 2.55 carat outmoded cushion cut D VS2color and clarity. Full view. See this gorgeous stone from every angle ...
158.10 carat Asscher-cut Diamond Bracelet
This staggering bracelet sparkles with the radiance of 150 Asscher-cut diamonds. Arranged in 5 rows of 30 each, these spectacular stones weigh 158 ...
Heart Shape Diamond 5.02 carat D VS2 GIA Certified Loose
www.rothem-diamonds.com R. Rothem Diamonds Nearest GIA certified heart shape diamond weighing 5.02 carat. The diamond has a GIA certificate and it ...
Choosing the right emerald cut diamond? | Diamons Engagement Rings
VS2 in clarity is NOT ble to the eye obvious, however if there is an irregularity, you would be more tenable to do with a stone on emerald or assembly or ellipsoidal or pear-shaped.
It is pleasing to look for a stone discharge (so you can compare "apples to apples." My advice is to visit and approach. ... Do you uneasy about a fit and of enlightened acceptance. Oh, one more question, cons with a jeweler, not discount stores where it belongs.You'll work sick to get what you pay and you can begin to structure a relationship with someone, you can give, so when it comes to having spread the ceste cleaned, graded, assessed, repaired, etc. you will someone you can ask for and seem to be satisfied with doing the chore. A jeweler is someone you can have a measure "old" working relationships with the willingness of many times more gains at the latest. In addition, you'll have great birthday deals with purchases in the future.
VS2 by acute is not identifiable to the eye obvious, however if there is an irregularity, you would be more favored to do with the emerald cut stone on a ball-like or obovate or pear State....珠宝小常识之DIAMOND钻石_ベ麻雀oO_新浪博客
形成： 钻石的化学成分是碳，这在宝石中是唯一由单一元素组成的。在地球的深部大约150-200公里，纯碳物质在压力为（4.5-6）×109Pa，温度为1100-1600摄示度条件下结晶，高温高压形成天然钻石。在地球的深部只有很少的地方具有钻石形成的物理、化学条件。
什么是钻石： 钻石的矿物名称为金刚石，其英文名称diamond,来源于希腊文adamas，意为最硬的东西。
钻石是一种结晶矿物，和石墨一样，都是由自然界中的碳（化学元素C）组成的。在所有的自然矿物中，钻石具有最高的硬度，尽管钻石是坚硬的，但由于它的脆性，也是易碎的，一颗完好钻石晶体能够很容易的被一个铁锤敲打至粉碎。在所有物质中，钻石具有最高的热传导性，即使像银和铜这样的金属，他们的热传导性也不及钻石。此外，加热时钻石很难或者根本不会膨胀。在温度高达700℃至800℃时钻石会燃烧；在无氧的环境中，当加热到1500℃左右时，钻石会转变成碳。 与金刚石的区别（其实，严格地说，金刚石和钻石的含义是不同的。自然界产出的金刚石因其品质的优劣不同，只有很少一部分可作宝石用，其余大部分只能用于工业上(比如切割玻璃用的金刚钻)。可作宝石的金刚石是指那些纯净无杂质无裂隙无包裹体无色透明或有特殊颜色且晶体较大的金刚石。这种未经加工琢磨的金刚石原石称作宝石金刚石。宝石金刚石经过专门的琢磨加工成各种首饰才能称作钻石。不过，人们习惯上常常把金刚石和钻石等同起来，也就不加严格区分了。）
...
