Nosynthetic gem tourmaline exists.A fluid inclusion in thisBrazilian tourmaline contains a large gas bubble, liquid, a delicate curvedfiber, and small solid crystals. “Communicator tubes” and “necking down”structures are visible. Field of view 3.16 mm.巴西碧璽,可見(jiàn)流體包裹體中含有一個(gè)大氣泡、略微彎曲的纖維狀包裹體和一個(gè)小的固體包裹體,可見(jiàn)“通訊管”和“頸縮”結(jié)構(gòu)。
【GIA 2023 夏季】鉆石中彩虹般的昆蟲(chóng)翅膀。A subsurface feather in diamond resembling an insect wing, with visible iridescence caused by thin-film interference.鉆石近表面下的羽狀裂紋就像昆蟲(chóng)的翅膀,由于薄膜干涉作用形成彩虹色。最大的羽裂紋位于鉆石臺(tái)面,類(lèi)似于彩虹色昆蟲(chóng)翅膀。在這顆鉆石中,羽狀紋的彩虹色與一層厚度與可見(jiàn)光波長(zhǎng)相近的空氣薄膜所引起的薄膜干涉。
【GIA 2023 夏季】美國(guó)科羅拉多州水晶中的斜綠泥石和白云母。拉曼光譜分析表明,綠色球狀內(nèi)含物為斜綠泥石(圖2),化學(xué)式為Mg5Al(AlSi3O10)(OH)8,屬于綠泥石族。These bluish green spheres in the quartz crystal were identified as clinochlore, and the white spheres were identified as muscovite.雖然綠泥石族礦物是水晶中常見(jiàn)的內(nèi)含物之一,但質(zhì)地柔軟的藍(lán)綠色球狀斜綠泥石在筆者的經(jīng)驗(yàn)中并不常見(jiàn)。
【GIA 2023 夏季】新疆海藍(lán)寶石的內(nèi)部世界。圖1新疆海藍(lán)寶石中的赤鐵礦包裹體,自樣品中心向外延伸。Thin-film liquid inclusions and visible internal tubes parallel to the c-axis with spectral interference colors were observed in the aquamarine samples.圖3海藍(lán)寶石中的盤(pán)狀裂隙包裹體,由中間的固態(tài)包裹體所引起,管狀裂隙向內(nèi)延伸。應(yīng)力裂隙主要與中檢的固體包裹體有關(guān),管狀裂隙垂直于盤(pán)狀裂隙的方向延伸。
Unusual “Horsetail” and Columnar Inclusions in Demantoid.翠榴石中不尋常的馬尾絲狀和柱狀包裹體。Demantoid, a gem variety of andradite garnet, sometimes contains “horsetail” inclusions, a type of fibrous inclusion commonly seen in demantoid from Russia. Recent studies have shown that these horsetail inclusions from Russian demantoid are in fact hollow tubes partially filled with.
【GIA 2022 冬季】達(dá)碧茲藍(lán)寶石中的火山狀內(nèi)部特征。Each of these trapiche-like sapphires from Changle, Shandong Province, has a brown-black hexagonal core in the center and six white radiating arms.頂光源照明下,內(nèi)部特征呈現(xiàn)出一幅美麗的場(chǎng)景,讓人聯(lián)想到火山爆發(fā)后被重疊的山丘與河流所包圍(圖2B),在透射光下,同樣的特征就像一幅中國(guó)山水畫(huà),之前的“河流”更像火山和山丘周?chē)脑贫洌▓D2C)。