Search Results
Fine Jewelry University Articles matching: “What does ci mark mean”
Showing only FJU Article results. Click here to show all results.
Fine Jewelry University (Show All FJU Articles)
-
The Magic of Polarized Light
… polarized light on a daily basis when we put on our sunglasses, turn on our TV, or sit down at our computer. But, what is polarized light exactly, and why is my jeweler writing about it? It turns out that polarized light is actually a …of the molecules are aligned with each other so only a certain vibrational direction of light can pass through. This means that all of the light that passes through a polarizing filter is “polarized.” Common Uses for Polarizing Filters …
-
How to Value Inherited Jewelry
…, jewelry value is not one set number. It changes with the situation (who is buying, and who is selling) and the marketplace (global economy, commodity prices, local jewelry market, etc.). And, it changes with time and styles. …value of an item could be $1,000 given one set of conditions, but in a certain area, given the way it was put out to market, the condition of the item, the photo in the ad, and a million more factors the seller may only find a buyer …on how much it would cost to replace the jewelry item with a new one. It is not the value of the jewelry itself, but what a new jewelry item like the piece would cost. As a classic example, under a replacement price standard of value a …
-
What to Do When Your Ring Irritates Your Skin
…. Don’t worry. There are many options you have when faced with this problem. The first step is to try to determine what the cause of the irritation is. There are actually several different possible causes and it’s easy to waste a lot of … can dramatically affect our finger sizes. So, if the ring has never caused irritation in the past, and suddenly it does, it’s possible that a change in diet (eating more salty foods for instance) has caused your finger to swell slightly…
-
Caring for and Cleaning Your Jewelry
… in a sink, take the precaution of plugging the drain and using a small screen strainer. How to Care for Jewelry What is the hardest natural substance on earth? Diamonds. Legend says diamonds are indestructible. Diamonds are remarkable … from touching one another when you wear or store them. Diamonds are crystals that grow with a cleavage plane. This means a sharp blow on a vulnerable spot can chip or break the stone. This does not mean that diamonds are not very durable…
-
Gem in the Spotlight: Ruby
For much of human history, rubies have been the most prized gemstone. But, what is it about this red gem that has captivated our hearts and minds for so long? Is it ruby’s color? It’s rarity, and …precious stones” in the ancient language of Sanskrit. Rubies get their name from the Latin word “ruber,” which means red. This is also where rubellite tourmaline (the red variety of tourmaline) gets its name. Pliny the Elder mentioned … settings. Remember to dry your ruby jewelry thoroughly before wearing or storing. Why Ruby? Rubies are a truly remarkable gemstone with a long and rich history. From their association with royalty and dragons to their mystical healing …
-
Jewelry Repair FAQ
… quite similar to the original. So, that beautiful piece of jewelry you love can look just the way it used to again. What is retipping, and why do I need it? In a large number of jewelry pieces, the valuable diamonds and gemstones are … laser welder in the hands of our skilled craftsmen there is a good chance we will be able to repair your jewelry. What is Gold Plating? Gold plating is the process of depositing a thin layer of gold onto the surface of jewelry. This is …
-
Gem in the Spotlight: Tourmaline
… in submarines. History and Lore of Tourmaline The name tourmaline comes from the Singhalese word turamali, which means “mixed gems” owing to the fact that the gem can look like many others. Tourmaline was first discovered in 1554 in …, right here in California . Maybe you just appreciate the vibrant colors and rich history of this very special gem. Whatever your reason, you can’t go wrong with a beautiful piece of tourmaline jewelry, and the gemologists here at Arden …
-
What Are Lab Grown Diamonds?
…vocabulary. Synthetic. Understanding this term correctly is the key that unlocks this entire question. Synthetic can mean artificial or even fake. Synthetic can also mean man-made, copied, unreal, or even imitation. But, in this context, … gems that are often, incorrectly, described as synthetic diamonds. This misrepresentation has seriously confused what the term “synthetic” means, and it’s why most producers of man-made diamonds prefer the term “lab grown” over “…
-
Gold Purity and The Differences Between White and Yellow Gold
Gold, just the word brings to mind value, rarity, wealth, beauty and jewelry. But what is gold? Yes the scientists tell us gold is an element with the chemical symbol Au. We know it is the heraldic metal… love. Gold Purity Is all gold the same? We hear a piece of jewelry is pure gold or solid gold or 24 karat gold, but what does it all mean? Gold used in jewelry like wedding rings can come in many forms. Basic to understand the uses of …% gold and 41.7% alloy. In most engagement rings the stamp in the ring is 14k or sometimes 585. Both of those stamps mean the wedding ring is 14 karat gold. So the only pure gold is 24 karat gold which is sometimes called 999 gold. Solid …
