The world of Precious stones

date: 2/20/2011

Nature gives us a large variety of beautiful precious stones, which we love and enjoy their beauty. “Ophir” has a large variety of jewelry set with those magnificent jem, and I think it’s good to know a little bit about the world of gem stones and the gems in our jewelry.

  • The precious stones are divided into two different types of main groups:
    1. Transparent – obvious clear and beautiful stones, most likely expensive then the nontransparent. The crystalline structure is the most common shape in nature for this kind of stones.
      The description of this group are "veins" that appear on these gems, as far as there are less "veins" the more expensive the stone is. A lot of "veins" causing the stone to be more opaque.
      All the stones in this group can be found as nontransparent, the inexpensive state of the gems.
    2. Nontransparent – opaque, most likely inexpensive, although it depends on the stone. The rocky structure is the most common shape for nontransparent stones.
      Some of the stones in this group can be a bit transparent but not clear as the first group.
  • There are two main types of cutting stones we use:
    1. facets- the most common form of cutting gems. Gem built in many phases and creates the classic round gem shape:
      "table" above or "an end" down and many other facet shapes.
    2. Cabochons- half circle stone cutting.
  • The gem valuation order

Gems are divided into two categories: precious and semi-precious:

  • There are only four types of precious stones:
    1. Sapphire - a gem with all shades of blue, very light blue to blue almost completely black.
    2. Ruby - very light red, like blood, sometimes dark pink.
    3. Emerald (Emerald) - usually green grass, clear stone with "veins" in it.
    4. Diamond - translucent.

All the other gems are "semi - precious", even though there are many kinds of stones that can be thousands of dollars for one gem:

  • Agate - the largest gem family with widespread nature, appears in different colors, either one color or lots of colors together creating sort of a "painting".
    There are unique Agte stones that got specific name in this large group:
  • Onyx - black color, glossy and opaque.
  • Carnelian – brown, bright and dark colors.
  • Moss Agate - a type of stone that for millions of years moss became fossil, looks like a tree on clear white, a bit transparent.
  • Jasper – most common color is brown, the rest is a game of brown and green as green with brown dots and vice versa.
  • Eilat stone - mostly opaque green, sometimes appears with the blue looks like an abstract painting (this type can only be found in Israel).
  • Malachite - opaque green with black stripes or black circles on it.
  • Lapis Lazuli - deep blue, most common with gold points in it.
  • Labradorite - looks like cloudy water, greenish with a bluish "flickering" inside.
  • Moon stone - white, semi-transparent, often with bluish flickering, reminding the Labradorite.
  • Coral – white, pink, red, deep red. Some times can be black or blue.
  • Turquoise – turquoise, pale blue and opaque.
  • Jade – bright green till slightly darker, more common with green and white together.
  • Opal – All colors of the rainbow, reminds an hologram. Usually comes in white with sparkling pink, blue and green, but also the texture of blue and green glow together.
  • Amethyst – transparent purple, can be clear to dark, or appear as an opaque fabric of purple and white
  • Blue Topaz – translucent blue
  • Rose Quartz – transparent pink, milky pink.
  • Garnet – red wine transparent, bordeaux.
  • Amber – comes transparent or nontransparent, feels like plastic, the most common color is yellow, can be also red, black and white.
  • Topaz - transparent, shades of brown, light to dark.
  • Citrine - transparent, yellow, orange.
  • Pearl - the most common is white, the rest are gray, black, pink, champagne, blue.
  • Peridot Olivine - transparent, light green and clear as olive oil.
  • Alexandrite - transparent purple, blue and pink together, in some cases changer colors.
  • "Gold Stone" - sparkling brown color.
  • Sodalite - opaque, blue with touches of white in it.
  • Hematite - opaque, gray, very shiny.
  • Tiger Eye - opaque, brown with light brown stripe and yellow flickering from side to side.
  • Cats Eye - like the Tiger Eye only in shades of gray.
  • Tourmaline - transparent, common colors - green, pink and blue. This special gem often comes with two or more colors in one stone. There is a famous unique shape of this stone "Watermelon tourmaline", which is pink surrounded with a green frame.
  • Aquamarine - transparent, all shades of blue.
  • Fluorite - half opaque, green and purple comes also together.

These are the large variety of beautiful precious stones that we like to set in our jewelry.

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