Search Results
Fine Jewelry University Articles matching: “all 18k gold markings”
Showing only FJU Article results. Click here to show all results.
Fine Jewelry University (Show All FJU Articles)
-
Frequently Asked Question about Jewelry
…. What is redesigned jewelry or redesigned? Simply put, a redesign is a custom design using your existing gems and gold or platinum. This does not mean you are limited by the gems you have, but what you have is incorporated into the new … see the Diamond Buying Guide . What is Filigree? Filigree is a delicate, complicated and detailed work made from gold or other noble metals. It is used to decorate and beautify jewelry by adding a graceful touch. Filigree was derived …
-
Gem in the Spotlight: Tsavorite Garnet
…world. Here was a gem with the color to rival the most exquisite emeralds and the clarity of the cleanest sapphires, all with the time tested durability of garnet. Tsavorite is a unique form of garnet with a stunningly vivid green color… better known Emerald. Gemology Tsavorite’s rarity and beautiful green color reminds one of the other green garnet called Demantoid. Demantoid, however, is a completely different variety of garnet found primarily in Russia. Tsavorite is …
-
Gem in the Spotlight: Amethyst
… a pale lavender to a deep, dark purple, and it is often found in shades of pale to medium purple. Amethyst is typically found in Brazil, Uruguay, and Madagascar, but it can also be found in smaller deposits in other countries such as … its specific gravity is 2.66. Its chemical composition is SiO2. History and Lore The rich history of amethyst dates all the way back to ancient Greek mythology. The word “amethystos,” is derived from the Greek word meaning “not drunken…
-
Gem in the Spotlight: Blue Zircon
… color. But, zircon can be almost any color you can imagine including red, yellow, orange, brown, green, champagne, golden, saffron, and colorless. Zircon colors are pure and have that distinctive fire that sets it apart from other gems. … color of Starlite is rarely natural, and is almost always heat treated. Of course, the blue form of Zircon is also called, imaginatively, Blue Zircon. Blue zircon was a specific favorite in Victorian times, when fine gems were often …
-
The History of Diamond Cuts
… about diamonds is: “the substance that possesses the greatest value, not only among the precious stones, but of all human possessions.” said by Pliny, the Roman historian. The story of the diamond cut is the story of humankind’s love of… remarkable attributes is that the natural diamond crystal is beautiful without any human modification. Diamonds normally form in the octahedral shape which looks like two pyramids stuck together at the base. Naturally, the first …
-
Gem in the Spotlight: Iolite
… an optical phenomenon in which a substance 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. … works because of the ability of a gem to absorb different wavelengths of transmitted light depending upon its crystallographic orientations. Iolite is one of the most pleochroic gemstone used today. It is iolite’s pleochroism that led …
-
How Are Lab Grown Diamonds Made?
… the imagination of scientists and visionaries alike. Just like the alchemists of old who sought to turn lead into gold, many have tried to achieve this impressive feat. We have only recently been able to produce gem quality, lab grown …. Many attempts were made to reproduce his techniques with some reported successes, but none could ever be scientifically verified. The quest continued. Diamonds are a crystalline form of carbon, and so making artificial carbon crystal …
-
Styles of Earring Backs
… Irritant – If used with costume jewelry made of non-precious metals, it may cause irritation to sensitive skin. Gold options found on more valuable jewelry do not typically have this problem. Lever Backs (European Backs) Lever backs, …expanding your general jewelry knowledge. Keep reading; we have your answers. Friction Backs (Butterfly Backs) Also called “butterfly backs,” and sometimes “push backs.” These are undoubtedly the most common style of earring back. They …
-
Gem in the Spotlight: Tourmaline
… the power to grant enlightenment, give power over spiritual affairs, reconcile opposites, and change base metals to gold. Tourmaline has a special place in our hearts as California natives because it is one of the few gems that are found… of modern gemology, most tourmaline was believed to be ruby, sapphire, or emerald. Gemology of Tourmaline Gemologically speaking, tourmaline is its own mineral and not a species or member of a different family (unlike emerald and …
