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Fine Jewelry University Articles matching: “Sapphire bands”
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Fine Jewelry University (Show All FJU Articles)
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The Magic of Polarized Light
… (DR) and they will split incoming light in multiple directions. Some common examples of doubly refractive gems are sapphire, tourmaline, and moissanite. These are contrasted with singly refractive (SR) gems like diamond that only bend light …optics manufacturers use a polariscope to analyze the internal stresses of their glass. Can you see the dark “snake” bands on this glass gem? In Conclusion So there you have it, a brief introduction to polarized light and its many uses in …
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Anatomy of a Ring
… and break or crack over time. The gallery is also a prime location to see wear caused by other rings (e.g. wedding bands) that are worn next to each other. The constant friction with another ring can actually wear through the gallery … enough to hold the ring together? Are the gallery wires thin and easily breakable? Will it accommodate any bands or other rings you plan to wear next to the main ring? Head The head is the piece that holds the gemstone. Pronged heads are …
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Gem in the Spotlight: Quartz
… is known for its durability with a Mohs hardness rating of 7 (harder than opal and peridot but softer than topaz or sapphire). This makes it a fairly hard gemstone that is resistant to scratching and chipping. It is also resistant to heat … typically still has the appearance of wood (also called petrified wood) Agate Multi-colored chalcedony with curved bands Fire Agate Brownish red with a fire of color Moss Agate Multiple shades of green or brown moss like inclusions in …
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Gem in the Spotlight: Aquamarine
… in shades of blue-green. Aquamarine has a refractive index of 1.577 to 1.583 and is doubly refractive. Aquamarine’s specific gravity is 2.72 and it has a Mohs hardness of 7.5-8.0. For comparison, this means that it is softer than Sapphire, harder than Quartz, and similar to Topaz. This makes it a very durable stone that is suitable for regular wear. But, care should still be taken to ensure that the stone is not damaged. Caring For and Cleaning Aquamarine To maintain the …
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Frequently Asked Question about Jewelry
… in a comfort-fit style. Comfort-fit engagement rings have extra metal to make the inside of the band slightly domed, resulting in a very comfortable fit. Comfort-fit wedding rings are generally more expensive than non comfort-fit bands. A Comfort Fit Ring is beveled inside, in that manner the edges of the ring are not in direct contact with the flesh of the finger, resulting in a more comfortable fit. This might result in the feeling that the ring feels “looser” in the …
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Gem in the Spotlight: Topaz
… preference. Topaz itself is a hard gemstone with a Mohs hardness of 8. Mohs hardness is a standardized metric of how difficult it is to scratch something. For reference, topaz is a bit softer than diamond which is a 10 and corundum (sapphire/ruby) which is a 9 on the scale. It is a bit harder than emerald at 7.5-8 and quartz which comes in at 7. Here are some more gemological stats for reference: Refractive index: 1.619 to 1.627 Birefringence: 0.008 to 0.010 Specific …
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Platinum
… has another remarkable quality – pliability. Platinum is a symbol of true love, purity, rarity and strength. These qualities of platinum are equivalent to the ideals of eternal true love. All over the world, engagement rings, wedding bands and anniversary rings made in platinum symbolize the everlasting endurance of love. Platinum is pure, an expression of integrity, a reflection of inner truth. Platinum’s purity endows it with a brilliant white luster. This helps to …
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Gem in the Spotlight: Tanzanite
…, even with its rarity and dynamic look, tanzanite is still less in price than more commonly known gems like rubies, sapphires, and emeralds. Gemology of Tanzanite Gemologists refer to this gem as blue zoisite. The vast majority (current … its color. Tanzanite has a Moh’s hardness of 6-7, making it about the same hardness as quartz, softer than ruby, sapphire and emerald and hard than opal. Tanzanite has a refractive index of 1.69-1.70. History and Lore of Tanzanite Tanzanite …
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Gem in the Spotlight: Amethyst
… found in smaller deposits in other countries such as Russia, the United States, and Canada. Amethyst is known for its durability with a Mohs hardness rating of 7. For reference, amethyst is roughly as hard as tourmaline, softer than sapphire and topaz, and harder than opal and tanzanite. This makes it a durable gemstone that is resistant to scratching and chipping. It is also resistant to heat and chemicals which means that it can withstand daily wear and tear. Amethyst …
