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2. Cinnabar - Wikipedia

   en.wikipedia.org/wiki/Cinnabar

   Cinnabar generally occurs as a vein-filling mineral associated with volcanic activity and alkaline hot springs. The mineral resembles quartz in symmetry and it exhibits birefringence. Cinnabar has a mean refractive index near 3.2, a hardness between 2.0 and 2.5, and a specific gravity of approximately 8.1.

3. Dragon's blood - Wikipedia

   en.wikipedia.org/wiki/Dragon's_blood

   Dragon's blood, powdered pigment or apothecary's grade and roughly crushed incense, extracted from Calamus draco. Dragon's blood is a bright red resin which is obtained from different species of a number of distinct plant genera: Calamus spp. (previously Daemonorops) also including Calamus rotang, Croton, Dracaena and Pterocarpus.

4. Calomel - Wikipedia

   en.wikipedia.org/wiki/Calomel

   Calomel occurs as a secondary mineral which forms as an alteration product in mercury deposits. It occurs with native mercury, amalgam, cinnabar, mercurian tetrahedrite, eglestonite, terlinguaite, montroydite, kleinite, moschelite, kadyrelite, kuzminite, chursinite, kelyanite, calcite, limonite and various clay minerals. [2]

5. Chinese alchemical elixir poisoning - Wikipedia

   en.wikipedia.org/wiki/Chinese_alchemical_elixir...

   In Chinese history, the alchemical practice of concocting elixirs of immortality from metallic and mineral substances began circa the 4th century BCE in the late Warring states period, reached a peak in the 9th century CE Tang dynasty when five emperors died, and, despite common knowledge of the dangers, elixir poisoning continued until the 18th century Qing dynasty.

6. The 7 best gray hair treatments of 2025, according to hair ...

   www.aol.com/lifestyle/best-gray-hair-treatments...

   This is a a great option for fine hair, according to Collins, who explains that fine gray hairs can appear limp and lack volume. Gray hairs that differ in texture from the rest are even more ...

7. Chinese alchemy - Wikipedia

   en.wikipedia.org/wiki/Chinese_alchemy

   Chinese alchemy (煉丹術 liàndānshù "method for refining cinnabar") is a historical Chinese approach to alchemy. According to original texts such as the Cantong qi , the body is understood as the focus of cosmological processes summarized in the five agents of change, or Wuxing , the observation and cultivation of which leads the ...