Search Results
Fine Jewelry University Articles matching: “Sapphire types”
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
… and money trying different solutions if you don’t know what the true source of the problem is. There are two main types of irritation: 1) Physical irritation caused by the metal rubbing against the skin, and 2) allergic reactions to …
-
Synthetic Gems: The Whole Story
Ruby, sapphire, emerald and alexandrite are very beautiful gems and very rare in their stunning beauty. These four gems have been … thousands of years. But, what if anyone could own them? At gem shows and museums, I have seen jaw dropping rubies, sapphires and emeralds. These gems in high quality have put ownership beyond most people to justify the price. Just a one …to positively identify as synthetic. Both, I feel, are impossible to identify in a piece of jewelry. Synthetic ruby, sapphire, alexandrite and emerald are very complex because there are different ways to make them. The inexpensive way to make…
-
Gem in the Spotlight: Tourmaline
… is one of the most beautiful gems that you’ve probably never heard of. Less popular than the likes of ruby or sapphire, tourmaline flies under the radar in the gem world and remains the best kept secret of gem collectors and connoisseurs who… it for hundreds of years. But, before the advent 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…
-
Gem in the Spotlight: Iolite
…near the top of the list. Iolite’s color range of blue, blue-violet, and violet competes for public attention with sapphire, tanzanite, and amethyst. They may have name recognition, but iolite has a rich, unique color and great gem value on …. The Gemology of Iolite Iolite is the gem variety of the mineral Cordierite. Iolite was once known as a “water sapphire”. Dichroite is another synonym for iolite. Dichroite is a Greek word which loosely translates as two-colored rock. This …
-
How to Sell Jewelry on eBay and Other Websites
… to add up all the cost of selling to set your price (the cost of the listing, how many times it takes to sell, shipping and supplies, insurance, the fees for credit card processing, other fees for things like appraisals, etc.). Two types of people shop online. First, there are the ones who are looking for something unique and are willing to pay a high price for it. Second, the others are looking for a great bargain, wanting only to pay the lowest price. If your jewelry …
-
Gem in the Spotlight: Emerald
… of chromium and vanadium in the crystal structure. Emerald’s Mohs hardness rating is 7.5-8 making it softer than sapphire and harder than amethyst and other quartz varieties. The refractive index of emerald ranges from 1.57 to 1.58, making …text and wore them as talismans. Notable Emeralds Trapiche emeralds are one of the most rare and highly sought-after types of emeralds in the world. Their name originated from traditional grinding wheels used for milling sugarcane in …
-
How to Value Inherited Jewelry
…out to us . We offer a free consultation where our jewelry experts will sit down with you and explain the different types of value and how they relate to your particular jewelry. Jewelry, to many people, is a “caveat emptor” or “buyer …is the value that an insurance company expects to see. If you’re interested, you can read more about the different types of appraisals . The replacement value insurance appraisal has the least correlation to the actual market value of the …
-
How to Tell If a Diamond Is Natural or Lab Grown
… complex and sophisticated machines for answering this question. They have imaginative names like DiamondCheck, DiamondSure, and DiamondView. Roughly speaking, these machines work like our DiaTrue. They bombard a diamond with specific types of radiation (nothing harmful to humans) and analyze what the stone outputs. There are certain, tell-tale signs of the various processes used to make lab grown diamonds that show up as spikes and troughs at specific wavelengths in the…
-
Gem in the Spotlight: Pearl
… discovered by the devil himself and was once owned by a Spanish king who believed it to be a talisman of good luck. Types of Pearls There is a huge variety of pearls available on the market today. This section will give you just a small … to be of a higher quality than freshwater pearls. They are also typically more expensive. Some of the most famous types of saltwater pearls include the South Sea pearls, Tahitian pearls, and Akoya pearls. Akoya pearls, grown in Akoya …
