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  • Information Centre form diamonds and gemstones
    oysters while the diamonds have evolved after being compacted under the earth s crust for millions of years The luminous glow of pearls is produced by the pearl s nacre Due to this very reason pearls are not compact and hard To start with one should avoid wearing pearl jewelry while indulging into any physical work like exercise and gardening The accumulated dirt and perspiration would curtail the longevity of the pearl jewelry It hardly matters whether its pearl bracelets or necklaces their use in casual day to day life experiences should be limited In spite of the fact that the pearls originate from oceans they should not be worn while swimming or scuba driving There are several elements to which pearls are sensitive thus they should be exposed to the environment in a careful manner They should be kept in different containers and away from other jewelry items They should preferably be kept in soft jewelry pouches or boxes Dry and air tight environment should be prevented for their storage If they are worn regularly they should be re strung at least once in a year In addition to it lotions hair sprays and perfumes have certain elements which

    Original URL path: http://www.truros.ca/information_centre4.htm (2014-10-22)
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  • Information Centre form diamonds and gemstones
    made from tungstenite Scheele and Torbern Bergman suggested that it could be possible to obtain a new metal by reducing tungstic acid In 1783 Jose and Fausto Elhuyar found and acid in wolframite that was identical to tungstic acid In Spain later that year the brothers succeeded in isolating tungsten through reduction of this acid with charcoal They are credited with the discovery of the element In World War II tungsten played an enormous role in background political dealings Portugal as the main European source of the element was put under pressure from both sides because of its sources of wolframite ore The resistance to high temperatures as well as the extreme strength of its alloy made the metal into a very important raw material for the weaponry industry However it is still quite new for the jewelry industry The process to create tungsten carbide rings The two biggest challenges to create these rings are shaping and finishing the super hard metal as well as devising a method to permanently bond bands of gold and platinum inside the tungsten carbide host ring The following is a simplified version of how the Coppari manufacturing process works Tungsten is processed with carbon and other elements and ground to a powder The mixed in an oxygen free furnace at over 2 400 degrees F resulting in a solid tungsten carbide ring blank of extreme hardness The rough blank goes through a 30 stage precision grinding process using exclusively diamond embedded grinding tools held in specially designed machinery Versions containing platinum or gold inlaid sections are made by grinding a groove into the center of the hard metal ring and using our exclusive patented process to fuse the precious metal with the groove The finishing process is unique in that diamond polishing compounds are

    Original URL path: http://www.truros.ca/information_centre5.htm (2014-10-22)
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  • Information Centre form diamonds and gemstones
    princess cut diamonds they are still coveted by many people Emerald The emerald cut diamond is among the most classic of diamond shapes that is distinguished by bevelled corners and step facets emerald cut diamonds are more transparent than other shapes resulting in the need for higher standards of clarity The emerald cut can be one of the least expensive to cut because its shape is most like the natural shape of the rough diamond crystal Because of the angle size and shape of the facets the emerald cut shows less brilliance and fire dispersion than the other brilliant cut diamonds However the emerald cut stone reveals a classic beauty and elegance not seen in other cuts The trim lines of Emerald cut diamonds lend an elegant sophisticated air to both the simplest of ring designs Heart The heart shaped diamond is the most romantic of diamond shapes and a symbol of love and affection the heart cut diamond is an excellent choice for an anniversary or engagement ring It is a tender gesture to make to someone special A quality heart shaped diamond is lovely and distinctive with an even shape and well defined outline They are the ultimate symbol of romance and more and more people are choosing heart cut diamonds for engagement and anniversary rings Heart Shaped Diamonds are rarer and more expensive as it takes a large piece of diamond rough to shape cut and polish to something that is the ultimate symbol of love the heart Princess A modern innovation the princess shape dazzles and sparkles with its starburst facet pattern while still leaving the crown of the diamond flat and open The princess cut is stunning set as a solitaire it is a modern classic of clean square lines and beautiful sparkle Its sharp corners are usually contained in a four pronged or bezel set in wedding rings You will also find Princess cut diamonds are often channelled into the wedding band itself Princess Cut Diamonds are for those people who love the sparkle and brilliance associated with round cut diamonds but prefer the shape of a square While the round brilliant solitaire seems to be the most popular shape right now for engagement rings many people are deviating from this trend and going with princess cut diamonds Radiant The radiant cut was first patented in the late 1970 s by Henry Grossbard with its angular shape and brilliant cut facets it makes a scintillating alternative to other cuts such as the Emerald cut The radiant shaped diamond can be considered a modified brilliant diamond that is closely related to the princess cut diamond because of its square shape High quality Radiant cut diamonds combine the fire and sparkle of Emerald and Round cuts Now you know the different shapes of diamonds that you can purchase and which shape will accentuate individual fingers or provide brilliant sparkle we can now move on to the ring There are many different metals used for rings today

    Original URL path: http://www.truros.ca/information_centre6.htm (2014-10-22)
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  • Information Centre form diamonds and gemstones
    The dipping solutions while very good at removing tarnish is equally as effective at removing the colour and polish off some gemstones A general rule of thumb is not to dip any jewellery with gemstones the ones that are most affected are porous gemstones such as pearls turquoise malachite lapis lazuli and white opals If you are using a dipping solution make sure you clean off any residue in warm soapy water and then dry thoroughly Silver chains are easily cleaned using a clean solution I have also used a small brush similar to a tooth brush to clean out any residue that has accumulated in the links of the chain An alternative to using a dipping solution is a silver cleaning cloth this is a quick way to remove traces of tarnish quickly without harming the gemstones If your piece of jewellery has a very intricate design then a dipping solution would be the best to use Most people wear their silver jewellery daily so that can be exposed to external chemicals such as household detergents hairsprays and some perfumes Your own body through perspiration can be a source that creates tarnish A few simple tips on reducing these

    Original URL path: http://www.truros.ca/information_centre7.htm (2014-10-22)
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  • Gemstone
    Yellow X Red X All other varieties X Chrysoberyl Alexandrite X All other varieties X Corundum Ruby X Sapphire X Diopside X Feldspar X Garnet X Iolite X Opal Fire X Peridot X Quartz X Spinel X Spondumene X Topaz

    Original URL path: http://www.truros.ca/truros/resources/ColorGemstoneSampleList.htm (2014-10-22)
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  • Diamond wedding rings, fine gemstones and other jewelry
    as the most valuable Ruby will have a vivid saturation Another consideration is tone as it should be medium to medium dark if it s too dark then it will impact the gemstones brilliance If the gemstone is too light it will look pink and then it cannot be called a Ruby and must be classified as a Pink Sapphire Most sellers would like borderline colors of pink red to be classed as Rubies as they are more valuable If you are purchasing a more expensive Ruby its important to have it graded by a reputable laboratory such as GIA or EGL to have the color authenticated against color master stones Cut Today fine quality Rubies over 1 carat are rare but commercial quality Rubies are readily available The most common cuts for Rubies are Ovals and Cushions with brilliant cut crowns and step cut pavilions You will find Round Trillion Emerald and Pear in smaller sizes but they are rare in larger sizes with higher qualities Cutters will try to cut the gemstone to minimize the orangey red color due to the Pleochroism different colors of the gemstone depending on which way it is observed to increase the value Clarity Most Rubies contain some inclusions as flawless Rubies are very rare expensive and usually belong to collectors Some of the inclusions you might see are silk needles included crystals fingerprints growth and color zoning and color banding There are different grading scales available throughout the world but the most commonly used one is from the Gemological Institute of America GIA The gemstones are graded into 3 Types and each Type has the following grades Eye Clean Slightly Included Moderately Include Heavily Included and Severely Included Corundum is a Type 2 and if you have the opportunity to purchase one

    Original URL path: http://www.truros.ca/truros/resources/buying_a_ruby.htm (2014-10-22)
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  • Diamond wedding rings, fine gemstones and other jewelry
    in making sure that the sales channel is receiving their goods as advertised sometimes reputable resellers purchase gemstones lots and either do not have the time or take the time to check out what they are receiving is what they advertise They in turn can inadvertently sell consumers Quartz for Topaz or synthetic for natural gemstones etc So how do you as a consumer protect yourself when purchasing gemstones or jewelry on line Here are my Top 10 Tips If you are looking for jewelry or gemstone items of high value then try to make sure that they come with a Grading and Appraisal Certificate Check that the seller has knowledgeable staff on site that are Graduate Gemologists Check to see if there are customer testimonials or Customer Feedback something companies like eBay do very well Make sure they have a money back guarantee policy for returning items If you are purchasing Diamonds and want to know how to then go to http www gia edu howtobuyadiamond Tour FrameSet htm Gemological institute of American is a non profit organization that is recognised worldwide in diamond appraisal and grading but also developed most of the grading systems used today If you are purchasing Gemstones and want to know how to then go to http www gia edu howtobuyagemstone 00 enter html Gemological Institute of American is a non profit organization that is recognised worldwide in gemstone appraisal and grading Make sure that they offer a secure payment system either on their site or preferably at sites like PayPal etc and use your credit card if possible as you can always work with the credit card companies on getting their help for a refund if you cannot get satisfaction from the seller Make sure that the item description and grading is clearly

    Original URL path: http://www.truros.ca/truros/resources/buying_gemstones_or_jewelry_online.htm (2014-10-22)
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  • Diamond wedding rings, fine gemstones and other jewelry
    the dye to reach just below the surface To assist in having the dye penetrate some gemstones are heated and then cooled quickly by quenching in water this causes minute surface cracks into which the dye will flow The more color a gemstone has the more appealing to the consumers Heat Treatment This is the most common among treatments and is used extensively on corundum Sapphire Ruby to enhance the color of the gemstone Heat can also be used to remove internal blemishes or color centres to improve the gemstones color consistency Most gemstones that are heated result in enhancing or changing the color are stable however they are still enhancement and should be disclosed I rradiation You will find this treatment in some colored gemstones and colored Diamonds This process began in the early 1990s and is used widely today there are minimal traces of radiation in the gemstone but its never harmful if the correct procedures have been followed The challenge in gemstones is the lack of stability and its sensitivity to heat once the process has been completed Therefore it is important that you know the gemstone has been irradiated if you ever have a jewellery item repaired make sure the stone is removed as the heat will change the color Most colored Diamonds are made affordable by irradiating the natural browns and yellow which can turn them into blue green and red colors making them more attractive and increasing their value The process in diamonds is more stable but is still susceptible to changes with heat Surface Diffusion This treatment is becoming more common today with the enhancement of more valuable gemstones such as corundum The gemstone is heated just below melting point and then chemicals are used to penetrate the surface to become part of

    Original URL path: http://www.truros.ca/truros/resources/gemstone_treatments_and_disclosure.htm (2014-10-22)
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