What are gemstones or gems? - Giliarto

 UP TO 15% OFF . USE CODE : GIFT

 UP TO 15% OFF . USE CODE : GIFT

What are gemstones or gems?

August 25, 2018

What are gemstones or gems?

A gemstone is a piece of mineral, crystal, rock, organic material, which can be used in jewelry and decorative items after cutting and polishing. Gems are naturally occurring inorganic materials with a certain chemical consistence and crystal-like construction. The largest group of gemstones consists of silicates, like emerald; the second largest group comprises oxides, like rubies and sapphires. For a material to take a crystalline form, its molecules are combined in regularly ordered forms. Some crystals show a specificity called twinning, when two separate crystals merge in a variety of particular configurations and share some of their crystal lattice points in a symmetrical way.  Chemical character and molecular construction must be taken together when describing a mineral. Chemical character denotes the atoms contained within the mineral. Molecular construction refers to how the molecules link to each other. For example, diamond has the simplest chemical character with carbon being the only component present and shape crystals that look like two pyramids attached at their bases.

Most gemstones have little beauty in the rough state. They may look like average rocks or stones. In nature it is common for a mineral to have impurities. These exist in very tiny amounts, generally 3% or less of the crystal by weight. Although, these contamination do not change the main chemistry, they can make a substantial difference in a mineral’s appearance, which can have a significant influence on its worth. Most pure minerals have no color. It is the impurities that provide them color. The majority of gemstones are hard to the touch but depending on the piece of jewelry that is being produced, some soft minerals are also used.

Characteristics of gems include their optical properties such as luster, luminescence, dispersion of light, refractive index, and absorption. Gemstones are also categorized by their physical properties such as density, hardness resistance to scratching, splitting, and fracture.





Leave a comment

Comments will be approved before showing up.


Also in Articles
How to impress your self in jewelry using Giliarto How to impress your self in jewelry using Giliarto

May 12, 2019

Come, try out Clio and your jewelry buying experience will never be the same again. Clio will set you free from dependence on a jewelry store to decide how your jewelry should look.

View full article →

What you need to know about lab-created gemstones What you need to know about lab-created gemstones

March 03, 2019

They say diamonds are forever, and the beauty and durability of diamonds and other gemstones really makes us believe it. But it is also true that gemstones mined from the earth’s crust do play havoc with the fragile ecological balance of our planet earth.

View full article →

HOW TO FIND YOUR RING SIZE

February 17, 2019

Wrap a strip of paper around your finger, just above the knuckle, and mark the point at which the two ends meet
Measure the paper from mark to mark to find your ring circumference
Use the ring size chart  to locate your size

View full article →