Search Results
Fine Jewelry University Articles matching: “chemical equation”
Showing only FJU Article results. Click here to show all results.
Fine Jewelry University (Show All FJU Articles)
-
Gem in the Spotlight: Topaz
… the different shades of blue, but these three are the most widely accepted. Mystic Topaz is a very interesting gem. The play of rainbow-like colors is definitely unique and enjoyable to see. A relatively new treatment process called Chemical Vapor Deposition (CVD) has been developed to create this additional color of topaz. This is the same treatment process used to put coatings on lenses for glasses and cameras. It is also one of the processes that is used to create lab …
-
What to Do When Your Ring Irritates Your Skin
… ring back together again. This can lead to a confusing situation where a ring suddenly begins to irritate someone after years of problem free wear. A change in diet, again, could also lead to irritation due to a change in the skin’s chemical composition. Adding to the confusion, metal allergies can develop at any age. This means that even if nothing changed it is possible to suddenly become allergic to jewelry that you have been wearing trouble free for many years. and …
-
The Magic of Polarized Light
…: Radios, X-ray machines, and microwaves all use some form of a polarizing filter to allow them to function efficiently as they do without negative side effects. Using Polarized Light in Gemology Some gemstones, due to their unique chemical structure, actually polarize light themselves. These gems are doubly refractive (DR) and they will split incoming light in multiple directions. Some common examples of doubly refractive gems are sapphire, tourmaline, and moissanite. …
-
Gem in the Spotlight: Amethyst
…. This makes it a durable gemstone that is resistant to scratching and chipping. It is also resistant to heat and chemicals which means that it can withstand daily wear and tear. Amethyst has the same refractive index as other varieties of …. Be sure to rinse it thoroughly and dry it off with a soft cloth. You should also avoid exposing amethyst to harsh chemicals or heat, as these can damage the gemstone. Prolonged UV/sun exposure can cause the color in amethyst to fade so keep…
-
Gem in the Spotlight: Jade
… Nephrite Gemologically speaking, nephrite and jadeite are two different gems, with different refractive indices and chemical makeups. Both gems are silicates which basically just means that they are rocks. These particular rocks are made up …with wax to help improve its appearance. The wax fills pores in the jade, and can be damaged if cleaned with harsher chemicals or an aggressive brush. Wax can be reapplied if needed. Whether you love to rich olive green of nephrite or the …
-
How to Sell Your Jewelry
… metal (gold, platinum, silver) price plus any gems. The refining process used to recover the metal utilizes strong chemicals and has strict environmental regulations which impact the price given for metal brought to be recycled. If you would…. Besides the price received for the jewelry, the time investment you have to make to sell the jewelry enters the equation. What are your time and energy worth? I have known people who have driven around town for two days just to make $20 …
