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Fine Jewelry University Articles matching: “Marked au”
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Fine Jewelry University (Show All FJU Articles)
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The Difference Between White Gold and Platinum
…% to 95% platinum and the balance alloy. Iridium or ruthenium is often used as a hardener alloy. Platinum is usually marked with .900 or .950 to mark its fineness. Some manufacturers state what alloy they are using like 90% Platinum 10% … of white gold look light yellow and never achieve the white look. It does not sound like a big problem because if you don’t like the light yellow look of a specific manufacture, then don’t buy it. New white gold rings are usually …
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Gem in the Spotlight: Ruby
… Cartier into a ring along with two diamonds weighing a total of 5 carats. In 2015, Sotheby’s put the ring up for auction where it sold for a record setting $30.42 million dollars to an anonymous Swiss buyer. Care and Cleaning of Ruby … residue. If there is any, repeat the process. You can use an ultrasonic cleaning machine with rubies, but use caution as these machines can cause loose gems to come out of their settings. Remember to dry your ruby jewelry thoroughly …
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How to Sell Your Jewelry
… of compromise…Each method has its strengths and liabilities. This list of ways to sell estate jewelry is not exhaustive. Personal creativity can show you the best way to sell your jewelry or one the more traditional methods may work … fine. Examine your options and evaluate the benefits and drawbacks to find the very best way to sell your jewelry. Auctions are the prestigious way to sell estate jewelry. There is an air of sophistication in liquidating jewelry …
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Gem in the Spotlight: Iolite
… appears to be different colors when observed at different angles, especially with polarized light. Pleochroism is caused by differing absorption of light rays in doubly refractive crystals. Thus, no singly refractive gemstone can …It is comparable to quartz (Amethyst, Citrine, etc), a little harder than Opal, and softer than Emerald or Topaz. Because of this, some extra care should be taken with your iolite jewelry. Try to avoid wearing it in situations where it …
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The Birthstones
… been considered a royal color so it is not surprising that amethyst has been so much in demand over the years. Because amethyst was thought to encourage celibacy and symbolize piety, amethyst was very important in the ornamentation of … of diamonds. The diamond has been a symbol of eternal love since the 15th century, when Archduke Maximillian of Austria sealed his engagement to Mary of Burgundy with a diamond ring. Of all jewels, the diamond is supreme and worthy of …
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What are “Blood Diamonds”?
… countries at peace. These countries have been able to invest the revenue from diamonds into the development of infrastructure, schools and hospitals for the good of the communities in which diamonds are found. These countries include Australia, Botswana, Canada, Namibia, Russia, South Africa and Tanzania. Botswana in particular has been greatly helped by its diamond resources. The country’s health system and employment out look is substantially benefited by diamonds …
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Gem in the Spotlight: Alexandrite
…, and some LED light. Under incandescent light, candle, and firelight, alexandrite appears purplish-red. This is because of how the trace element chromium interacts with alexandrite’s crystal structure. It absorbs most wavelengths of … 1.746-1.755 with an average birefringence of .010. It has a specific gravity of 3.73 and a Mohs hardness of 8.5. Because of its high hardness, alexandrite is suitable for everyday wear. That being said, because of natural alexandrite’s…
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Star White Gold
How white is your white gold? Style, fashion, and beauty are all reasons to choose white gold. White gold compliments diamonds. White gold is bright. White gold has a pure… about the problem with no real solution…now we have a solution! Why are white gold consumers dissatisfied? Because they don’t know what the true color of the jewelry is when they buy it. I have seen a yellow gold ring heavily plated … color tested by the American Assay & Gemological Office, a division of BAO Technical Services Ltd., the most authoritative testing source in the world. All of the Star White gold alloys have received a “Premium” rating, indicating …
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Gem in the Spotlight: Opal
…captivating optical phenomenon gives rise to a diverse range of opal varieties each possessing its own distinctive beauty. The distance between each sphere of silica causes interference with light breaking it up into its spectral hues. … grown quartz (the same material that is commonly used for watch crystals). This helps show off the opal’s beauty while keeping it safe and strong. Doublets and triplets are much less expensive than other forms of opals because you only…
