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Diamond often fluoresces blue and hence the historical "blue-white" color designation given to colorless diamonds. Other fluorescent colors include orange and sometimes a bright yellowish-green.
This is a fact. For more information, visit this external site: Diamond disperses light well resulting in a balanced fire, which is due to included water. Included water helps to give opal a play-of-colors, but is not related to the dispersion of diamond.
Diamond's high refractive index gives it extraordinary brilliance, scintillation sparkleand adamantine luster. When choosing smaller diamonds, brilliance is the key factor.
For more information, visit these external sites: Why do diamonds shine? Diamond jewelry is a meaningful gift that should never be removed for cleaning. Although gifts are often meaningful, diamond has an affinity for grease!
This is helpful in separating mined diamond but detrimental to keeping your diamond ring clean after washing greasy dishes, pots, and pans.
Secrets to Keeping Your Diamond Sparkling, http: This diamond testing instrument left measures thermal conductivity to separate diamond from look alikes.
Not only is diamond's thermal conductivity higher than other colorless gems, it is four times greater than copper! This instrument has limitations though and does not recognize some rare natural diamonds.
While most gem diamonds have high thermal conductivity, some diamonds and most diamond imitators do not. Type IIb diamonds are semi-conductors and as such are electron acceptors, not donors.
This limitation in detecting thermal inertia extends also to blue diamonds that contain the impurity boron, which is responsible for the blue color in the Hope Diamond for example; these natural diamonds may register incorrectly as not diamond using this thermal conductivity device.
For more information, visit: Paul May's Diamond website explaining the different types and properties of diamond, www.Diamond is the hardest natural substance known. It is formed deep in the mantle and is only brought to the surface via kimberlite pipes, lamprophyres, eclogites and other rocks that originate deep within the mantle.
It is also found in alluvial deposits, along with quartz, corundum, zircon and other minerals, derived from such rocks, and in certain meteorites. Important Solved MCQs Questions of Everyday Science for PPSC CSS SPSC.
1) One of the countries through which equator passes is: (a) Kenya (b) Malaysia. A diamond cutter or jeweler determines the color of a diamond by comparing it visually with "knowns," or the diamonds for which the color has already been determined.
For example, in "colorless" or not "fancy" stones, the value of the stone goes down with increasing yellow. With over 60 majors and programs, Eastern offers courses of study for almost everyone. Faculty engage students in learning through innovative uses of technology and hands-on experiences in the classroom.
The Diamond Essay - The Diamond Diamond is the best known gem. It is known as the “king of gems” for its brilliance and for being the hardest mineral on earth.
Before any actual mining even takes place, prospectors need to locate diamond sources first. To hit pay dirt and get to the larger sized rough crystals, geologists follow the trail of secondary diamond sources to determine where the primary sources of pipe deposits are.