翡翠入門
種老同種嫩有咩分別？顯微鏡下嘅翡翠真相
Old-Texture vs Young-Texture Jadeite: The Truth Under the Microscope
'種'係翡翠嘅靈魂，但種老同種嫩到底有咩分別？用顯微鏡放大100倍，你會見到翡翠晶體結構嘅驚人差異。呢篇文章用最直觀嘅方式解釋。
'種'係翡翠最重要嘅評估指標之一，但好多人對'種老'同'種嫩'嘅理解停留在表面。其實，種老同種嫩嘅本質分別，係翡翠內部晶體結構嘅緊密程度——即晶體顆粒嘅大小同排列方式。
顯微鏡下嘅真相
將翡翠放大100倍觀察，種老同種嫩嘅分別一目了然。種嫩嘅翡翠，晶體顆粒粗大，各晶體之間有明顯嘅縫隙，就像碎玻璃渣一樣各自為戰。種老嘅翡翠，晶體顆粒細小，緊密融合在一起，就像一塊完整嘅玻璃，幾乎看不到晶體之間嘅界限。
積雪融化比喻
最容易理解種老同種嫩分別嘅方法，係用積雪融化嘅比喻：乾冰/積雪狀態（晶體完全分離）= 種最嫩，就像奶粉，完全不透明；積雪開始融化（晶體部分融合）= 種嫩偏中；積雪大部分融化成水（晶體大部分融合）= 種老；完全融化成冰塊（晶體完全融合）= 種最老，就係玻璃種翡翠。
種老 vs 種嫩：視覺對比
| 對比項目 | 種嫩 | 種老 |
|---|---|---|
| 晶體結構 | 顆粒粗大，各自分離，有縫隙 | 顆粒細小，緊密融合，無縫隙 |
| 透明度 | 低，光線難以穿透 | 高，光線可以穿透 |
| 光澤 | 蠟質光澤，略顯呆板 | 玻璃光澤或油脂光澤，靈動 |
| 表面 | 拋光後有小坑小挖，不均勻 | 拋光均勻光滑，無凹坑 |
| 起膠感 | 無起膠感 | 有明顯起膠感 |
| 長期穩定性 | 容易變種，發黃發暗 | 穩定性高，越戴越靚 |
| 投資價值 | 低 | 高 |
底子：種水嘅均勻程度
一條手鐲可以局部種老、局部種嫩，整體唔協調就係'底子問題'（底子唔均勻）。底子均勻嘅翡翠，整體種水一致，視覺效果更好，價值更高。底子唔均勻嘅翡翠，即使局部種水好，整體評估都會打折扣。
飄花位置種水更老
一個有趣嘅現象：翡翠中有飄花（綠色）嘅位置，種水通常比無色位置更老。原因係飄花位置在地底受到更大嘅壓力同溫度，晶體融合得更徹底。呢個現象可以幫助你在觀察翡翠時，通過飄花位置嘅種水來判斷整體嘅種水潛力。
💡 選購要點：選購翡翠時，除咗睇外觀嘅透明度，更要注意起膠感同底子均勻程度。有起膠感、底子均勻嘅翡翠，係種老嘅重要標誌，長期佩戴更有價值。
English Version
Old-Texture vs Young-Texture Jadeite: The Truth Under the Microscope
The concept of 'texture' (種) is one of the most important evaluation criteria for jadeite, yet many buyers' understanding of 'old texture' (種老) versus 'young texture' (種嫩) remains superficial. The fundamental difference lies in the tightness of the internal crystal structure — specifically, the size and arrangement of crystal grains.
The Truth Under the Microscope
Magnified 100 times, the difference between old-texture and young-texture jadeite becomes immediately apparent. Young-texture jadeite has large, coarse crystal grains with visible gaps between them — like shards of broken glass, each crystal isolated from the next. Old-texture jadeite has extremely fine crystal grains that are tightly fused together — like a single piece of solid glass, with almost no visible boundaries between crystals.
The Melting Snow Analogy
Imagine a pile of fresh snow (young texture) versus a block of ice (old texture). Fresh snow is made of individual snowflakes with air gaps between them — light scatters and cannot pass through. A block of ice has the same water molecules, but they are tightly fused — light passes through clearly. Old-texture jadeite is the 'ice block' state: the same mineral, but with crystals so tightly interlocked that light flows through them as if through glass.
Old vs Young Texture: Visual Comparison
| Criteria | Young Texture (種嫩) | Old Texture (種老) |
|---|---|---|
| Crystal structure | Large grains, separated, with gaps | Fine grains, tightly fused, no gaps |
| Transparency | Low — light cannot penetrate easily | High — light flows through clearly |
| Lustre | Waxy, slightly dull | Vitreous or oily lustre; lively |
| Surface after polishing | Micro-pits and unevenness visible | Smooth and even, no pitting |
| Jelly effect | Absent | Clearly present |
| Long-term stability | Prone to degradation; yellows and darkens | Stable; improves with wear |
| Investment value | Low | High |
Base Uniformity: The Evenness of Texture
A single bangle can have locally old texture in some areas and young texture in others — this inconsistency is called a 'base problem' (底子不均勻). Jadeite with a uniform base has consistent texture throughout, creating a better visual effect and higher value. Even if a piece has excellent texture in some areas, uneven base quality will reduce the overall assessment.
Coloured Areas Have Older Texture
An interesting phenomenon: areas with floating colour (飄花) in jadeite typically have older texture than colourless areas. This is because coloured areas experienced greater pressure and temperature during geological formation, causing crystals to fuse more completely. This means you can use the texture quality in coloured areas as an indicator of the stone's overall texture potential.
💡 Buying tip: When evaluating jadeite, look beyond surface transparency — pay attention to the jelly effect and base uniformity. Jadeite with the jelly effect and an even base is a strong marker of old-texture material, and will become more beautiful with long-term wear.