7 Reasons to Pursue an Online Degree

Written by Rick Hendershot

by Rick Hendershot, Review-of-the-Week.com

We all know that furthering your education can open up opportunities that you would not otherwise have. And there is no better way to further your career pospects than by earning a degree or taking college courses to refine and expand your skills. In fact studying for an online degree can revolutionize your future.

Unfortunately most people find it difficult to study when they need to earn money. So traditional college courses are not an option for many people. Or if they are, they are often much too expensive or time consuming.

Earning your degree online has changed all that. Distance education has been with us for many years, butrepparttar development ofrepparttar 146822 internet has created an explosion in online study. Many people who have not been able to attend college to study for their degree now haverepparttar 146823 chance to earn a degree from home.

Advantages of Online Study and Online Degrees

First, studying for an online degree is incredibly convenient. Your classroom is your home office or living room and you can work on your online degree any time ofrepparttar 146824 day or night -- onrepparttar 146825 weekend, before breakfast or inrepparttar 146826 middle ofrepparttar 146827 night.

Second, when you study for an online degree you eliminaterepparttar 146828 tiresome and expensive commute that is part of traditional college study. Earning an online degree makes commuting a thing ofrepparttar 146829 past.

"Nature's Fireworks" - A Beginner's Guide to OPAL - Part 5 Types of Opal

Written by Stuart Bazga

Duringrepparttar Cretaceous period (65-140 million years ago) deserts were an inland sea teeming with life. The sea gradually receded layingrepparttar 146821 foundation of silica that would formrepparttar 146822 opal of today. Duringrepparttar 146823 mid-tertiary period, changes inrepparttar 146824 earth’s climate caused quantities of soluble silica to be released fromrepparttar 146825 sediment, finding its way down through cracks and faults, eventually hardening over time. This hardening continued to form common and precious opal.

The vivid array of colour inrepparttar 146826 opal is fromrepparttar 146827 uniform alignment ofrepparttar 146828 silica particles. The size ofrepparttar 146829 particles determinesrepparttar 146830 colour as light refracts through it.

Unlike many other gemstones, opal doesn’t occur in lengthy veins or concentrations. Instead, small clusters may be spread over a vast area and divided into precious or gem quality and common. Opal is found in many varieties, but precious opal represents only a small percentage ofrepparttar 146831 total mined.

Black Opal:

Black opal isrepparttar 146832 rarest and most valuable of all opals and is generally found as a bar of various colours in a dark body. In addition, there is also Semi black and black Crystal.

Black opals from Lightning Ridge, Mintabie and Andamooka in Australia account for 99.9% of all opals inrepparttar 146833 world.

Boulder Opal:

Boulder opal, found inrepparttar 146834 fields of Queensland, is classified as a solid opal and occurs as thin veins of precious opal in cracks and cavities of ironstone. During processing,repparttar 146835 stone is cut leavingrepparttar 146836 natural host rock as backing. The opal occurs as either a solid piece of colour on top ofrepparttar 146837 ironstone or showing as flashing flecks of colour throughoutrepparttar 146838 stone.

Light Opal (White or Milky):

Light opal can be found in Coober Pedy, Andamooka and Mintabie in South Australia. A full range of colours can be found, withrepparttar 146839 background colour either white or light blue.

Crystal Opal:

Asrepparttar 146840 name suggests, crystal opal has a brilliant, crystal appearance, with a translucent or transparent background. When viewed on a dark surfacerepparttar 146841 colours spring to life.

Picture Opals:

Picture opals are so called because their pattern forms an image of an object or person. A good imagination is sometimes required to visualiserepparttar 146842 object/person.

Fire Opal:

The term “Fire opal” is commonly used to describerepparttar 146843 clear orange crystal opal that comes from Mexico, some of which have a play of colour, although many have just an orange or reddish base with no play of colour.

Opalised Fossils:

Buried inrepparttar 146844 layers where opal mining occurs arerepparttar 146845 remains of a world over a hundred million years old, brought torepparttar 146846 surface by miners searching for gemstones. These fossils includerepparttar 146847 remains of dinosaurs, shells, mammals, plants and fish. Some of these fossils have been opalised, a process in which silica-laden waters have gradually replacedrepparttar 146848 organic material.

Common Opal:

Common opal is classified as non-gem quality opal, mostly opaque and showing no play of colour.

Matrix Opal:

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