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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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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…
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Art Deco vs. Art Nouveau Style Jewelry
Psst… we also have a YouTube video on Art Deco vs. Art Nouveau jewelry which you may like. The Art Nouveau and Art Deco movements have had a profound impact on virtually all forms… did they come from? Origins and Historical Context Originating in the late 19th century (1890 – 1910), Art Nouveau emerged as a rebellion against the academic art of the time. It sought to bring the natural world into artistic design, …emphasizing flowing lines, asymmetrical forms, and motifs inspired by plants, flowers, and the human form. Art Nouveau, also referred to as Jugendstil and Stile Liberty among many other monikers, simply means “New Art” and it impacted …
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Gem in the Spotlight: Blue Zircon
… by the facets of the gem to create the brilliant light show we see. Zircon is also of interest to geologists because it is one of the oldest minerals on earth. In the gem world, a type of stone is often given different names for each … advocate. He proposed the name “starlite” to promote the gem’s fiery nature. Unfortunately, the name never caught on, and today we use the simpler term, Blue Zircon. Zircon is commonly heat treated. Brown zircons can be transformed …
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Gem in the Spotlight: Pearl
… in a wide range of shapes, sizes, and colors. They are typically irregular in shape and have a unique, organic beauty. Cultured pearls are created through human intervention, and the vast majority of pearls available today are cultured… is virtually indistinguishable from a natural pearl in appearance, and can be created in a fraction of the time. Because of this, cultured pearls are far more common and affordable than natural pearls. Cultured pearls are considered “…
