Ametrine

Semi-precious stones, gems Mineral characteristic.

Ametrine - polychrome mineral, which combines features of amethyst and citrine, two-color variety of crystalline quartz, known as amethyst, citrine, amethyst two-tone, or bolivianit Ametrine. Wine yellow citrine and amethyst violet-purple are silica species, which differ by the presence of trace impurities. In nature, there are sometimes multispectral crystals, as if combining the two minerals. This is a semi-precious stone Ametrine, which has a purple, lilac or yellow-peach shade, often they are not perfect. Sometimes Ametrine can paint over the surface in a lilac color to hide the yellowish and reddish areas, although such color - not marriage, but simply multicolored (polychrome) variety of quartz. Sometimes there are very beautiful growths of crystals of different types (large crystals of a mineral grows smaller crystals than the other).

Today, most perfectly-transparent Ametrine - synthetic crystal, on one side is yellow Citrine, the other purple amethyst. Synthetic amethyst is usually very clear, clean, bright, with no internal defects and inhomogeneities, can reach large sizes, while maintaining clarity. Ametrine typically are cut so as to best show both colors, which colors the boundary is perpendicular to the site cut stone. Ametrine is especially sensitive to sunlight and UV light compared to all other quartz.

Semi-precious stones, gemsSemi-precious stones, gemsSemi-precious stones, gems

Semi-precious stones, gems

Toxic and hazardous radioactive rocks and minerals

** - Poisonous stones and minerals (obligatory check in chemical laboratory + clear indication of toxicity).

** - Radioactive rocks and minerals (obligatory check on a regular dosimeter + ban on the open sale of radioactivity in the event of more than 24 mR / hour + additional measures to protect the population).

All rare stones should always be checked on a regular dosimeter on the permissible level of radiation and a chemical laboratory in the absence of toxic and volatile components which are hazardous to humans and the environment.

  1. Adamini *
  2. Annaberg ** erythrite
  3. antimonite *
  4. Arsenolit **
  5. arsenopyrite **
  6. orpiment **
  7. Bayldonit *
  8. Beryl **
  9. betafite **
  10. Billietit **
  1. Bismutinit *
  2. antimonnickel *
  3. Viteri *
  4. gadolinium **
  5. Galit * *
  6. geocronite *
  7. glaucodot *
  8. Dekluazit Mottramit **
  9. Jordan *
  10. Carnot **
  1. vermilion **
  2. cobaltite *
  3. Kottunit *
  4. Lirokonit *
  5. marcasite *
  6. monazite *
  7. ammonia *
  8. Nichelino *
  9. Autun **
  10. pyromorphite *
  11. pyrochlore *
  1. proustite *
  2. rammelsbergite *
  3. realgar **
  4. Mercury *
  5. Senarmontit *
  6. Sulphur *
  7. skutterudite *
  8. Strontianite * *
  9. Antimony *
  10. tetrahedron *
  11. thorianite **
  1. Torit **
  2. uraninite **
  3. Farmacol *
  4. chalcocite *
  5. Hutchinson *
  6. Celestine * *
  7. Zircon **
  8. euxenite **
  9. enargite *
  10. aeschynite **
  11. conichalcite

Catalog of stones - all the stones in alphabetical order

  1. Aventurine *
  2. Agat ***
  3. azurite *
  4. Aquamarine *
  5. Alexandrite
  6. Diamond ***
  7. Almandine
  8. Amazonite *
  9. Amethyst **
  10. Ametrine
  11. Ammolite
  12. Ammonite
  13. Apatite
  14. Belemnite
  15. Beryl **
  16. mammoth tusk
  17. Turquoise
  18. Bulls-eye
  19. Verdelho
  20. Gagate (coal) * *
  21. Heliodorus **
  22. Heliotrope
  23. Hematite **
  24. Hessonite
  25. Howlite, Cowley
  26. Garnet
  27. grossular
  28. demantoid **
  1. chrome diopside Diopside
  2. Draveil
  3. petrified wood
  4. dumortierite
  5. Jade
  6. Pearl
  7. Emerald **
  8. Calcite *
  9. cacholong
  10. Quartz
  11. Quartz-hair-worm
  12. Quartz pink
  13. vermilion **
  14. conichalcite **
  15. Corals
  16. Corundum
  17. Cat's Eye Quartz
  18. Cat's eye chrysoberyl
  19. Flint * *
  20. Kuntz **
  21. Labrador **
  22. Lapis lazuli
  23. Moonstone
  24. Malachite
  1. Meteorite
  2. morganite **
  3. Morion **
  4. Jade **
  5. Obsidian **
  6. Onyx marble. **
  7. Onyx chalcedony
  8. Opal
  9. Orthoclase, microcline **
  10. pegmatite **
  11. Nacre
  12. Pyrite * *
  13. pyrope
  14. semi-opal
  15. Prase
  16. Rauhkvarts smoky quartz **
  17. Rhodonite
  18. Ruby
  19. rubellite
  20. Sapphire **
  21. Sardonyx
  22. Selenite
  23. Serafini
  24. Cornelian
  25. Serpentine (coil) **
  1. Simbirtsit **
  2. Sodalite
  3. Hawkeye
  4. staurolite **
  5. Tektite *
  6. Eye of the Tiger
  7. Tourmaline *
  8. Topaz
  9. Uvarovite
  10. Ulex * *
  11. fluorite
  12. Haliotis
  13. Chalcedony
  14. Peridot *
  15. Chrysoprase **
  16. crystal mountain
  17. Celestine * *
  18. Citrine
  19. Zircon **
  20. charoit **
  21. Schorl
  22. Spinel *
  23. Shungite * *
  24. eudialyte *
  25. euclase
  26. Epidote (Jasper)
  27. Amber
  28. Jasper