這也是欧泊只是没遊彩,英文叫Common opal

没辨法!這種石頭是外來石,看看Common opal的介紹

Besides the gemstone varieties that show a play of color, the other kinds of common opal include the milk opal, milky bluish to greenish (which can sometimes be of gemstone quality); resin opal, which is honey-yellow with a resinous luster; wood opal, which is caused by the replacement of the organic material in wood with opal;[9] menilite, which is brown or grey; hyalite, a colorless glass-clear opal sometimes called Muller's glass; geyserite, also called siliceous sinter, deposited around hot springs or geysers; and diatomite or diatomaceous earth, the accumulations of diatom shells or tests.                                                                                                                                      普通蛋白石

除了表現出色彩的寶石品種外，其他普通蛋白石還包括牛奶蛋白石，乳白色至藍綠色（有時可能是寶石質量）; 樹脂蛋白石，是具有樹脂光澤的蜂蜜黃色; 木蛋白石是由蛋白石代替木材中的有機物質引起的; ^[9] menilite ，棕色或灰色; 透明的無色透明蛋白石，有時稱為穆勒玻璃; 閃鋅礦也稱為矽質燒結礦 ，沉積在溫泉或間歇泉周圍; 和矽藻土或矽藻土 ， 矽藻殼的積聚或測試。