The value of a topaz is largely determined by its quality. But color is also important: blue topaz, for instance, is often irradiated to deepen and improve its color.
黄水晶的价值很大程度上取决于其品质，但颜色也很重要。举例来说，蓝色的黄水晶常需放射处理以加深和改善其颜色。
Blue Topaz
原声例句
新东方优美短文背诵
英语百科
Topaz
![](/Images/godic/202501/01/TopazUSGOV2026.jpg")
![Facet cut topaz gemstones in various colors](/Images/godic/202501/01/Large_Topaz_Gemstones2026.jpg")
![Yellow topaz in stepped kite-shaped cut](/Images/godic/202501/01/YellowTopaz2026.jpeg")
![](/Images/godic/202501/01/TopazMountainByPhilKonstantin2026.jpg")
Topaz is a silicate mineral of aluminium and fluorine with the chemical formula Al2SiO4(F,OH)2. Topaz crystallizes in the orthorhombic system, and its crystals are mostly prismatic terminated by pyramidal and other faces.
- Magnetic merging
- magnetic meridian orientation
- magnetic meridian plane
- magnetic meridian plate
- magnetic meridian
- magnetic metal
- magnetic metal content
- magnetic metal extractor
- magnetic metal impurity
- magnetic metal membrane
- magnetic method
- magnetic microcarrier
- magnetic micrometer
- magnetic microphone
- magnetic micropulsation
- magnetic microscope
- magnetic microsphere
- magnetic microspheres
- magnetic mill
- Magnetic mine
- magnetic mine detector
- magnetic minehunting
- Magnetic mineral
- magnetic minesweeping gear
- magnetic mirror