青岛地铁3号线图片:琥珀的分类——世界琥珀协会International Amber Association

琥珀的分类——世界琥珀协会International Amber Association

原网址 http://amber.org.pl/en/index.php?p=pokaz&id_m=3&id_pm=23  

以下是原文：

The Classification of Baltic Amber (succinite) Gemstones

The IAA has developed the following classification of amber gemstones, which it uses in relation to the companies it recommends. The classification also applies to finished amber products, which should not contain a mix of elements listed in different categories:

Amber, natural amber (succinite): natural amber, subject only to mechanical treatment (for instance: grinding, cutting, turning and polishing) without any change to its natural properties.

Improved amber (succinite): semi-finished products or products of Baltic amber, in which changes to its physical properties, including clarity and colour, have been artificially induced using thermal treatment.

Amber doublets, triplets or multi-element Baltic amber: gemstone consisting of two or more pieces of which at least one must be natural or improved Baltic amber. A coloured layer made of durable material between the amber elements or the placement of the formed amber gemstone on a base made of another material is permitted.

Reconstructed (pressed) Baltic amber: gemstone made of small amber grains and/or amber meal pressed in high temperatures and under high pressure without additional components.

Amber (succinite) imitations: materials, semi-finished products or products made of substances similar in appearance to Baltic amber (succinite), but with different physical and chemical properties. Any unlabelled imitation is a forgery.

Note: In order to underscore or change the natural colour of amber, it is permissible to use foil or flakes made of precious metals and colour backdrops made of enamel or paint in jewellery products decorated with Baltic amber (succinite) gemstones.

The above classification was adopted by the International Amber Association’s Expert Commission on Qualification at its session of 9 May 2005.

不逐句翻译了，只翻译一些关键的。如翻译的不对，请多指正。

Amber, natural amber (succinite): natural amber, subject only to mechanical treatment (for instance: grinding, cutting, turning and polishing) without any change to its natural properties.
琥珀，天然琥珀：天然琥珀只接受过机械处理（如：磨，切，turining?，抛光），没有任何的自然属性改变。

Improved amber (succinite): semi-finished products or products of Baltic amber, in which changes to its physical properties, including clarity and colour, have been artificially induced using thermal treatment.
改良（优化）琥珀：琥珀成品或半成品，被人工的通过热处理的方式诱导使之发生物理性质的改变，包括透明度和颜色。

Reconstructed (pressed) Baltic amber: gemstone made of small amber grains and/or amber meal pressed in high temperatures and under high pressure without additional components.
再生琥珀（压合）：由小琥珀碎块和/或者琥珀粉在高温高压下压制，不添加其他成分。

Amber (succinite) imitations: materials, semi-finished products or products made of substances similar in appearance to Baltic amber (succinite), but with different physical and chemical properties. Any unlabelled imitation is a forgery.
琥珀仿品：原料，半成品或成品由近似琥珀的物质构成，但是物理和化学性质不同，但是没有标签说明是仿品的。

Note: In order to underscore or change the natural colour of amber, it is permissible to use foil or flakes made of precious metals and colour backdrops made of enamel or paint in jewellery products decorated with Baltic amber (succinite) gemstones.
备注：为了强调或者改变琥珀的天然颜色，在珠宝首饰中允许使用贵金属的薄衬片和瓷漆或油漆的有色背景布来修饰琥珀。