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Ethiopian Opals Grading And Patterns
埃塞俄比亚蛋白石分级和模式
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ethiopian opals grading and patternsEthiopian opal is one of the most diverse and spectacular types of opals on the market today. Since this type of opal is new, there is no industry accepted way to grade this type of opal like there is with the black opal. Black opal is grading in terms of blackness, the brightness of the colour and the pattern.

Similarly, Ethiopian opal is also graded on pattern and brightness, but the body tone of the stone does not play a huge role in determining the final value.

There are many unique patterns to Ethiopian Opals and on Opal Auctions the descriptions have to be accurate. One of the most popular patterns in Ethiopian opals is a naturally formed potch line with web inclusions known as honey comb pattern. This pattern is very rare in any other type of opals. These honeycomb shapes are also known on occasions to have brighter or different colour than the surrounding opal, this is also a rare occurrence in nature.

Color And Brightness In Ethiopian Welo Opal

This refers to the fire within the opal. The translucent internal fire of these Ethiopian opals have properties that make the fire look 3D. This 3 dimensional colour aspect is rare in most opals. It looks like fire has been captured within the opal.

Ethiopian Opals Grading And Patterns

Many Australian black opals have hidden colour spectrum patterns deep within the opal so a blue opal can have hidden translucent colour bars with violet or purple hues that cannot be directly seen by the naked eye. Ethiopian opals have vivid translucent colour bars and patterns that are strikingly bright and are visible with the naked eye.

Ethiopian Opals are valued based on their bright flashes of fire colour. The brighter and more intense the color, the higher the price of the opal. Stones with red flashes are rarer than the other colors while the green and blue flashes are more common.

Treated Ethiopian Black Opal

I was at the recent Bangkok gem show where I saw large amounts of Ethiopian black opal being sold with gem reports saying its natural. New findings have shown that most, if not all, of the “black” Ethiopian opal now seen in the market is not what it appears to be! It is either treated by innovative new “smoking” techniques to obtain it’s black-opal appearance. As this opal is hydrophane it seems to respond to smoking well. Smoking techniques are not new where opal is concerned, but what is now being used on the Ethiopian opal introduces a new twist to the old smoking method, which is why the treatment was missed by respected gem-testing laboratories.

Smoked Ethiopian Opal

The old technique was used on low quality opal, such as Mexican hydrophane material, to darken the colour of the base material, which causes — by contrast — a more fiery play of colour. It was done simply by wrapping the opal tightly in brown paper, placing it in a covered container, heating over medium heat until the paper is completely charred, then cooling and washing it. The result was a much prettier opal!

The other treatment that is common with Ethiopian Opal is altering the body color of the stone with dye. Some stones can be find to have a bright pnk or purple body color which has been artificially placed into the stone.

Dyed Ethiopian Opal

These are the only known treatment so far for Ethiopian opal and it greatly reduces the price of the stone. On Opal Auctions any treatments must be clearly stated. If you have any doubts remember to use our opal Sheriff service to get a second opinion.

The only other thing to be aware of is the fake Ethiopian opal that is on the market today. Read our article on detecting fake opals to help arm yourself with the knowledge needed to correctly identify fake Ethiopian opals.

Pattern In Ethiopian Opal

Ethiopian Opal has a wide range of beautiful patterns and shapes from oval to free-form. Black Opals from Australia are well documented with unique patterns from Mackerel to Harlequin. Similar names have been adopted to describe Ethiopian Opals. The most highly sought after and expensive pattern is the honey comb pattern.

Broad Pattern Crystal

Ethiopian Opals Grading And Patterns

Patchwork Rolling Flash

Ethiopian Opals Grading And Patterns

Patchwork Honeycomb

Ethiopian Opals Grading And Patterns

Hexagon Honeycomb or Fish Scale

Ethiopian Opals Grading And Patterns

Pin Fire Crystal

Ethiopian Opals Grading And Patterns

Neon Flash Pattern

Ethiopian Opals Grading And Patterns

Welo Broad Flash

Ethiopian Opals Grading And Patterns

Rainbow Pattern

Ethiopian Opals Grading And Patterns

Broad Patchwork

Ethiopian Opals Grading And Patterns

Multi Chaff Fireworks

Ethiopian Opals Grading And Patterns

Broad Flash Fire

Ethiopian Opals Grading And Patterns

Floral Eyes Pattern

Ethiopian Opals Grading And Patterns

Fire Cloud

Ethiopian Opals Grading And Patterns

Welo Patchwork Harlequin Pattern

Harlequin is regarded as the rarest pattern in the opal industry with Ethiopia having its own unique pattern-honeycomb pattern. Honey comb pattern is the most sort after pattern on cabochon Ethiopian opal. Many opal miners will never find one of these patterns in their lifetime of work.

True harlequin pattern is a mosaic broad pattern, angular close set of colours. Floral patterns are sometimes called floral harlequin but Welo Floral or Welo patchwork would be the correct naming for these gem Ethiopian floral pattern opals.

Ethiopian opal honeycomb patterns

Shop Ethiopian Opals

埃塞俄比亚蛋白石的等级和样式埃塞俄比亚蛋白石是当今市场上种类最多,最壮观的蛋白石之一。由于这种蛋白石是新的,因此没有像黑蛋白石那样被业界认可的对这种蛋白石进行分级的方法。黑蛋白石在黑色度,颜色和图案的亮度方面是分级的。

同样, 埃塞俄比亚蛋白石也根据图案和亮度进行分级,但石头的基调在确定最终价值方面不起作用。

埃塞俄比亚蛋白石有许多独特的模式,在蛋白石拍卖中,描述必须准确。埃塞俄比亚蛋白石中最流行的图案之一是带有网状内含物的天然形成的罐线,被称为蜜梳图案。这种模式在任何其他类型的蛋白石中都很少见。这些蜂窝形状有时也比周围的蛋白石具有更明亮或不同的颜色,这在自然界中也是罕见的。

埃塞俄比亚Welo蛋白石的颜色和亮度

这是指蛋白石内的火。这些埃塞俄比亚蛋白石的半透明内部火焰具有使火焰看起来像3D的属性。在大多数蛋白石中,这种3D彩色方面很少见。看来蛋白石中已捕获了火。

埃塞俄比亚蛋白石分级和模式

许多澳大利亚的黑色蛋白石在蛋白石深处具有隐藏的色谱图样,因此蓝色蛋白石可以具有肉眼无法直接看到的具有紫色或紫色色调的隐藏的半透明色带。埃塞俄比亚蛋白石具有生动的半透明色条和图案,这些色条和图案非常明亮,并且可以用肉眼看到。

埃塞俄比亚蛋白石是根据其明亮的火光闪光来估价的。颜色越亮和越强烈,蛋白石的价格就越高。红色闪烁的宝石比其他颜色稀有,而绿色和蓝色闪烁则更常见。

埃塞俄比亚黑欧泊

我在最近的曼谷宝石展上看到大量埃塞俄比亚黑欧泊被出售,宝石报道说它是天然的。新发现表明,现在市场上看到的大多数(甚至不是全部)“黑色”埃塞俄比亚蛋白石似乎都不是!可以通过创新的“吸烟”技术对其进行处理,以获得黑蛋白石外观。由于这种蛋白石是水生的,似乎对吸烟反应良好。在蛋白石方面,吸烟技术并不新鲜,但是埃塞俄比亚蛋白石上正在使用的技术为旧的吸烟方法带来了新的变化,这就是为什么受人尊敬的宝石测试实验室会错过这种治疗方法的原因。

烟熏埃塞俄比亚蛋白石

较旧的技术被用于低质量的蛋白石,例如墨西哥的氢氰酸材料,从而使基础材料的颜色变深,相比之下,这会使颜色更加火热。只需将蛋白石紧紧包裹在棕色纸中,然后将其放入有盖容器中,用中火加热直至纸完全烧焦,然后冷却并洗涤即可。结果是更漂亮的蛋白石!

埃塞俄比亚蛋白石的另一种常见处理方法是用染料改变石头的主体颜色。可以发现某些宝石具有明亮的pnk或紫色的人体色,已被人为地放置在宝石中。

染色的埃塞俄比亚蛋白石

这些是迄今为止埃塞俄比亚蛋白石唯一已知的处理方法,它大大降低了石材的价格。在蛋白石拍卖中,必须明确说明任何处理方法。 如果您有任何疑问,请记住使用我们的蛋白石警长服务获得第二意见。

唯一要注意的是当今市场上的假埃塞俄比亚蛋白石。阅读我们有关检测假蛋白石的文章,以帮助您掌握正确识别假埃塞俄比亚蛋白石所需的知识。

埃塞俄比亚蛋白石的图案

埃塞俄比亚蛋白石有多种美丽的图案和形状,从椭圆形到自由形式。来自澳大利亚的黑欧泊(Black Opals)有很好的文献记载,从鲭鱼到丑角都有独特的图案。已采用类似的名称来描述埃塞俄比亚蛋白石。最受欢迎的且最昂贵的图案是蜜梳图案。

宽花纹水晶

埃塞俄比亚蛋白石分级和模式

拼布滚动闪光

埃塞俄比亚蛋白石分级和模式

拼布蜂窝

埃塞俄比亚蛋白石分级和模式

六角蜂窝状或鱼鳞

埃塞俄比亚蛋白石分级和模式

销火水晶

埃塞俄比亚蛋白石分级和模式

霓虹灯闪光模式

埃塞俄比亚蛋白石分级和模式

Welo Broad Flash

埃塞俄比亚蛋白石分级和模式

彩虹图案

埃塞俄比亚蛋白石分级和模式

广泛的拼凑

埃塞俄比亚蛋白石分级和模式

多叶烟花

埃塞俄比亚蛋白石分级和模式

广泛闪火

埃塞俄比亚蛋白石分级和模式

花眼图案

埃塞俄比亚蛋白石分级和模式

火云

埃塞俄比亚蛋白石分级和模式

Welo拼布小丑图案

丑角被认为是蛋白石行业中最稀有的图案,埃塞俄比亚具有自己独特的图案-蜂窝图案。蜂蜜梳子图案是凸圆形蛋面埃塞俄比亚蛋白石上种类最多的一种。许多蛋白石矿工在其工作生涯中永远找不到这些模式之一。

真正的丑角图案是马赛克宽大的图案,棱角分明的一组颜色。花卉图案有时被称为花卉丑角,但对于这些宝石埃塞俄比亚花卉图案蛋白石,Welo花卉或Welo拼布将是正确的命名。

埃塞俄比亚蛋白石蜂窝状图案

商店埃塞俄比亚蛋白石

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Srsw1srs

What I have seen at sites & at the gem shows is wholesale crystal (clear, or sometimes know as "jelly") is about $20-40 per carat for color & about $10. per for those with weaker & directional colors. Prices go up for darker base natural opal, with the larger stones commanding the most, of course. Multi-color, color saturated stones (especially with "3-D color & honeycomb characteristics) seem to bring the most, with commercial jewelry store dealers buying the $20-$40 per stones to set & sell with larger mark-ups in gold settings. (Same concept as with relatively inexpensive faceted colored stones).
Once in awhile I see "trunk sales" where a designer is hosted to a jewelry store that builds (creates) custom pieces with free-form, colorful Welo, or Boulder Opal, but rarely with the "high dollar" Australian Black Opal as it is just too expensive to be in the market place, except for the rich & famous. Just my two cents worth.  The trunk sales are attractive because the store does not have to buy & inventory, it just hosts the seller & takes a percentage of the sales that are concluded from the seller's trunk sale.

17th Jun
Opalplusadmin

In today’s market body tone is not as important as it was 3-5 years ago.
Today, Brightness and pattern are prime considerations.
Preference has been shown for unique pattern and than brightness and body tone last preference.
Ethiopian opals offer so good value in 10-20 carat category with good cabochon and full color direction
No other opal field can offer high domed cabochon opals with full direction of colors.
Unique patterns are in high demand from Honeycomb to snake pattern and no other gemstone has variety patterns as Ethiopian Opals

1st May
Drhelfert

In today's market, which body color is preferred?  I have seen Ethiopian Welo, Stayish and Shewa…clear, black and brown respectively.  Is there a preference?

29th Apr
Kasey2482

Thank you for sharing your knowledge on this seeming unknown stone.i have been fortunate to come in to possession of some nice Australia's hydraphane opal self prospected.most commonly know to come from Tintenbar.if you have any advise as to how to stabilise it so it can be worked that would be much appreciated.
Kind regards
Kasey

7th Jun 2019
Jdssicad

Very helpful!!  Wow, this is an easy, straightforward test that anyone can do, and it looks like a foolproof way to discern between Australian and Ethiopian opals.  Both are absolutely beautiful, but it's nice to know where they come from, and also good to be sure that the opals you buy are represented accurately.

20th Jan 2018
Naturalspectragems

Great Article. Very Insightful :)

10th Jan 2018
Bucsgirl47

I find it so sad the the Ethiopian Welo opal rough is so expensive compared to the low prices beautiful finished stones are getting.

26th Jul 2017
Mduem

Thank you for the insight!

5th Apr 2017
Dshaferb33

Great article! Thank you for sharing such valuable wisdom and knowledge!
Sincerely,
Denise Shafer

8th Mar 2017
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