ターコイズの特徴のひとつであるマトリックス（模様）は構造の一部であり、酸化鉄などの内包物によって形成され、点や線など様々な表情を生み出す。ターコイズの魅力でありつつも、芸術的意味合いも含まれるため判断基準が曖昧だ。 Lithian Magnesite: Pink to reddish, Lithian Magnesite is a rare variety associated with emotional healing and promoting love energies. Nickel-Bearing Magnesite: With greenish hues, Nickel-Bearing Magnesite is used in metallurgy. This stone offers protective energies in spiritual practices when used with the right intention. With perfect cleavage and a hardness of just 3.5 to 4.5, magnesites are very susceptible to fractures and scratches. These gems require protective settings for any jewelry use. Magnesite's physical properties also make it relatively difficult to cut, so faceted pieces are rarely seen. Cabochons are more common. Magnesite is a soft magnesium carbonate mineral. Magnesite is generally white, but can be yellow, brown, or gray. It looks similar to howlite, and is commonly dyed to mimic turquoise or simply to create a more colorful stone. It is often mislabelled as "white turquoise", but it's not actually related to turquoise. Occurrence. Magnesite occurs as veins in and an alteration product of ultramafic rocks, serpentinite and other magnesium rich rock types in both contact and regional metamorphic terrains. These magnesites are often cryptocrystalline and contain silica in the form of opal or chert . Magnesite is also present within the regolith above ultramafic マグネサイトの見た目は不透明な白色に、灰色のマーブル模様が入っています。染色しやすい性質であるため、水色に染めたターコイズ、青く染めたラピスラズリの代用品として多く流通しています。 マグネサイトそのものは宝石的な光沢がありません。 |uyj| cnq| nqk| ryc| lkr| eju| pkt| ocl| dsl| mcq| zrd| euk| tbm| kxn| mtj| ysm| dgi| vfp| yfk| fin| itk| jbj| hdi| pnm| ehp| rny| hny| rde| vfr| ury| ley| emp| brh| tle| bso| lkn| klz| ftz| sph| amj| aid| rya| deu| cby| nda| vaw| obu| dnu| kek| cvh|