Strain

Strain
Irregularity in the ordered structure of the atoms in a crystal.
Strass
Glass containing a high amount of lead oxide and cut to simulate a gemstone. Named for its inventor Josef Strass.

Strain metamorphism occurs when the host rock is subjected to stress; this frequently takes place along fault lines.

After straining your eyes to see the minute changes in the illustrations above, you might ask, how can a grader do it, especially when a great deal of money rides on the difference between, say an F and a G grade, or an L and an M?

Strain Feather 'Crashing Wave' Daimond Inclusion
All of the microscopic diamond inclusion photography on this page was generously contributed by the AGSL gemological testing laboratory in Las Vegas, Nevada, and is reproduced with their permission.

The strain-charge for a material of the 6mm crystal class (such as a poled piezoelectric ceramic, e.g. PZT) may also be written as: ...

Most subject to strain and wear are the chains that connect the two links. If these look thin and worn, be wary.

tectonic creep The almost constant movement of certain fault blocks that allows strain energy to be released without major earthquakes.

A pearl water tonic can be made to increase vitality, relieve eye strain, and soothe burning urination: place several small pearls in water overnight and drink the following day. This tonic is a natural antacid and anti-inflammatory.

Trumpeting roars rock the forest's stillness as the great pachyderm strains to tug the truck free. Again and again it pulls, yanking, screaming, while the truck's engine shrieks and moans.

Research conducted in using magnets for healing the areas of sprains and repetitive strain injury has come out with positive results. Research shows that magnets have an anti-inflammatory effect. How does it happen?

Keep both your eyes open to avoid eye straining.
Make sure there's enough light in the place where you are observing the gemstone. Fluorescent and other light bulbs lack some colours which are necessary.

Meeting payroll each week was a strain and she could make more money as a freelance designer, so she sold the business to Irving Ornstein, the co-owner of Davorn Industries10.

Recent news reports indicate that one researcher says he has successfully revived numerous strains of ancient bacteria trapped in amber! ...

Historically, engravers worked by pushing the blades with their hands or "chasing" it with a hammer, but today the assistance of an air powered hand piece helps to relieve physical strain and aids in more precise cuts.

Lapis generally occurs with a speckled and strained consistency, with glittering inclusions of iron pyrite.

Then rinse your jewels of the suds after cleaning them. You can use a small kitchen strainer such as a tea strainer to contain them while rinsing under warm water. Use a lint free cloth, or a jewelry polish cloth to pat them dry.

During the third century A.D. emerald was believed to lessen eyestrain, and many gem engravers kept it on their worktable. Various cultures attributed to it the ability to heal a range of digestive troubles.

This common mineral is being used as a gauge of tectonic stress and strain.
Carbonate Minerals
Two very important minerals and a flock of minor, but popular minerals.

Topaz. Encourages relaxation of physical or emotional strain. Dissipates excess or negative energy.
Tourmaline, Red (Rubellite). Balance emotions. Motivation.

Rinse the diamond jewelry in warm water. You may place the ring in a strainer so as not to drop it.
Use a clean, dry, lint-free cloth to dry your diamond jewelry.

A cleavage may be caused by inherent internal strain or by a sharp blow. Cleavage is one of the two methods used by stone cutters to split gemstones in preparation for the cutting process. The other method is sawing.

Isotropic - most garnets will remain black in all orientations under a polariscope but some will not. These garnets possess an anomalous double refraction (A.D.R.) due to straining of the crystal lattice. Ugrandites are commonly A.D.R.

A break in a diamond which is parallel to the diamonds crystal planes. A cleavage may be caused by internal strain or a sharp blow.
Cloud ...

Don't simply hold it in your fingers under the water or you might find yourself taking the drain apart to search for your ring! You can put the ring in a small strainer and run the water through that to make sure all the soap gets washed off.

Diamond is normally singly refractive, many gemstones are doubly refractive (bi-refringent), and diamonds can also be doubly refractive because of internal strain or inclusions.
Skin
Coating on the surface of many rough diamonds.

Swish the jewelry around in the solution and rinse it properly under running warm water. Remember to close the drain or put the jewelry in a strainer to prevent its loss.

The internal stress may be caused by strains arising in service or by retained stress left after fabrication. Sometimes called 'Season Cracking', especially in products made from some sheet brasses high in zinc.

Brush the jewelry with a soft brush until you have created a lather around it. With the jewelry on a plastic or metal strainer, rinse off with warm water (be sure not to clean your jewelry over the drain!) Pat your jewelry dry with a soft, ...

And since it is also said to activate the mind and liberate us from worry and anxiety, it is an excellent gemstone for those suffering from strain or exam nerves.

To your surprise, earrings were initially contrived not for the purpose of body modification or jewelry but to restrain evil spirits from entering one's body. They were also perceived as symbol of slavery by some ancient civilizations.

Single Refraction Diamond is normally singly refractive, many gemstones are doubly refractive (bi-refringent), and diamonds can also be doubly refractive because of internal strain or inclusions.

It was said that if you hung sardonyx around your neck, it could ease pain, give a person self-control, help to attract friends, insure a happy marriage, and bring success in legal matters. It was also believed to be able to restrain people who were ...

In fact, green has long been considered a soothing color and it is no coincidence that the “green room' in theaters and TV studios is supposed to relax a performer after the stress and eyestrain of studio and stage lights.

capacity for devotion and understanding and to bestow inner peace and joie de vivre on its wearer. And since it is also said to activate the mind and liberate us from worry and anxiety, it is an excellent gemstone for those suffering from strain or ...

Make sure the "Constrain Proportions" box at the bottom is checked, this will automatically adjust the width as the height is changed and vice versa to keep the proportions constant and prevent distortion.

size with slight inclusions, still possess all the beauty of color that is the Emerald's principal lure.
The tiny inclusions are called “jardin' - they look like tiny green plants. The classic “emerald cut' puts the least strain on a ...

Pearls' high calcium content has prompted many to drink pearl-water tonics to increase vitality, relieve eyestrain or soothe burning urination.

See also: Stone, Rough, Jewel, Make, Table