Search Results
Fine Jewelry University Articles matching: “black diamond”
Showing only FJU Article results. Click here to show all results.
Fine Jewelry University (Show All FJU Articles)
-
What to Do When Your Ring Irritates Your Skin
…try a new design. We do custom jewelry design , and one of our favorite projects is to take the raw materials (gold, diamonds, gemstones, etc.) from a client’s existing ring and use them to make a new and exciting creation. We can reuse the … which can begin hours or even days after contact and may last for several weeks. Some people’s skin even turns black or green when they wear certain jewelry. One of the most common metal allergies is Nickel which is added to pure gold in …
-
Gem in the Spotlight: Spinel
…, it should be treated and stored with care. Its Mohs hardness of 8 puts it on par with Topaz. It’s softer than diamond or sapphire but harder than quartz, tourmaline, and peridot. With proper care there’s no reason why a piece of spinel … with more well-known stones like ruby and sapphire. One of the most famous examples of this confusion was with the Black Prince’s Ruby. This stone currently sits at the front of the Imperial State Crown of the United Kingdom. When it was …
-
Gem in the Spotlight: Ruby
… oxide with a Moh’s hardness of 9. This makes ruby one of the hardest gems commonly used in jewelry second only to diamond (which has a Moh’s hardness of 10) and moissanite (which is in between). Rubies only occur in the color red which …ruby, and was originally mined in Myanmar. The Sunrise Ruby was eventually set by 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…
-
What Are Lab Grown Diamonds?
In the simplest terms, lab grown diamonds are diamonds that have been made by people instead of mined out of the earth. If it’s so simple, you might wonder …this sentence. The complexity arises from the fact that lots of different terms have been used to describe lab grown diamonds and their cousins, and not everyone uses these terms in the same way. So, let’s begin with some vocabulary. … mean man-made, copied, unreal, or even imitation. But, in this context, what do we mean when we say “synthetic diamond”? In the gemological world, synthetic is a highly technical term. When speaking technically, synthetic gems are man-made …
-
How Are Lab Grown Diamonds Made?
The dream of making a beautiful and valuable diamond from simple carbon has long captivated the imagination of scientists and visionaries alike. Just like the alchemists…, many have tried to achieve this impressive feat. We have only recently been able to produce gem quality, lab grown diamonds that are large enough to be used in jewelry. But, how is it done? Early Efforts Throughout history, many people …. Henri Moissan was one of the early pioneers in the field. In 1893, he claimed to have successfully made a diamond by heating charcoal to 3,500 degrees Celsius inside a carbon crucible. Many attempts were made to reproduce his techniques …
-
Caring for and Cleaning Your Jewelry
How to Clean Jewelry A diamond‘s spectacular beauty is due to its light show. Diamonds make light reflect, show its many colors, and dazzle. To … and lotions add a coating that stops the light show. Dust and dirt stick to the grease and oils creating a lifeless diamond. Cleaning your diamond jewelry at home is simple and rewarding. Use a soft toothbrush and mild soap then rinse … key to diamond cleaning is the underneath side or pavilion. The light needs a clean surface to bounce upward. The diamond may need to be scrubbed several times before all the build up is removed. Some don’ts of jewelry cleaning. Never use …
-
Gem in the Spotlight: Topaz
…ht. History and Lore Topaz in its pure form is naturally colorless, clear like a diamond. The famous “Braganza Diamond” was thought to be the largest diamond ever found (prior to the Cullinan Diamond) at 1,680 carats and was set in the Portu… to put coatings on lenses for glasses and cameras. It is also one of the processes that is used to create lab grown diamonds . A thin, multi-colored film is bonded on the surface of colorless topaz to create all the colors you see in Mystic…
-
Gem in the Spotlight: Blue Zircon
… of zircon creates one of the liveliest displays found in any colored gem. In fact, before any of the manmade diamond simulates were made, the colorless version of zircon was used in jewelry to mimic diamond. Why? Natural zircon is known for…, brown, or red variety of Zircon. Jargon is the colorless, pale gray, or pale yellow variety of Zircon. Matura Diamond is another trade name for colorless Zircon. Starlite is the name for the blue gem variety of Zircon. The color of …
-
Synthetic Gems: The Whole Story
… to plastic to high tech chemical tongue twister like gadolinium gallium garnet (also called GGG) and the modern diamond simulant Moissanite, a man made silicon carbide. In gemology, any material used to look like a gem is called a simulant… clear glass, rock quartz, GGG, and Moissanite are all diamond simulants. They look like diamonds, but they are not diamonds. These simulants are easy for a well trained and equipped gemologist to detect. But if you had gem material that is …
