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Saturday, April 17, 2010

Glass VS Crystal

Many times on the web, especially on auction sites, we see beads described as ‘crystal’ that we would call ‘glass’. The biggest category that gets mis-described this way is Czech Fire Polish beads. They are glass, not crystal, as we detail below.

Regular glass is mainly made of Silicon Dioxide (SiO2), with the addition of other ingredients, such as sodium carbonate (Na2CO3), calcium oxide (CaO), magnesium oxide (MgO) and Aluminim Oxide. The resulting glass contains about 70 to 72 percent silica by weight and is called a soda-lime glass. Soda-lime glasses account for about 90 percent of manufactured glass.

In general, man made ‘crystal’ is a glass that has had one or more of certain minerals added to a standard glass formulation to make the product more brilliant. Lead is the mineral of choice here, as lead oxide added to the molten glass gives lead crystal a much higher index of refraction than normal glass, and consequently much greater “sparkle”. The presence of lead also makes the glass softer and easier to cut.

As far as we know Swarovski crystal beads have the highest lead content of any bead that can be called crystal. The design of the cuts is also important, just as in cutting gemstones. At Swarovski, the angles of the facets are set up to maximize refraction and reflection of light, thus making their products as brilliant as possible. One thing you may have noticed is that the more facets on a cut bead (of any kind, crystal or gemstone), the higher the price. However, the more facets, the more brilliant and pretty the bead, so you get what you pay for.

The Czechoslovakian companies, such as Preciosa, make quite nice crystal beads, but they do have a lower lead content, and less modern cuts. Thus, they are not quite as brilliant as Swarovski products. Also, the Czech companies are not as aggressive in constantly creating new cuts, colors and finishes, as Swarovski has been for the last few years.

Czech glass beads, as opposed to Czech crystal beads, are just glass, with no special mineral additives. They are lighter, and are often molded or ‘pressed’ into creative shapes. Czech Fire Polish beads are glass beads (NOT crystal) that are cut into faceted shapes. However, the cuts are imprecise, and there is no mechanical polishing done. Instead the roughly cut glass beads are heated in special ovens. The surfaces and cut edges melt a little in the heat and smooth out nicely. The beads are then removed before they melt down entirely (we have seen some half-melted ones, just little bubbled lumps, it was amusing). Special coatings are applied after this stage.

A word about Chinese “crystal” beads. Humph. We have our doubts. They are super light weight, which alone indicates an absence of significant mineral additives. Their faceting is minimal, so this adds to their lack of brilliance. Yes, they are inexpensive and colorful. They are excellent for projects for young people. Are they really ‘crystal’ glass, or just regular glass? Who knows? Accept them for what they really are, and you won’t be disappointed. 

Sunday, April 11, 2010

Spring Inspiration

All artists get their inspiration from things and people in the world around them.  Spring is a great time to be inspired and jump start your creative juices!  Here on the Gulf Coast our azaleas are blooming in wild abandon.  The temperatures are finally in the 80's, spring break is upon us,  the sun is shining brightly, and the birds are singing.  Now is a great time to go outdoors and hike, picnic, fish or just hang at the beach.  But don't forget your sketchbook.  I always keep mine close at hand to record my ideas whenever they pop up....usually in the middle of the night!  Use your sketchbook to make quick sketches or notes of your observations, such as the shape of a flower, a bird soaring high above, the light reflecting on the sand and surf at the beach, or simply a little twig that has a special shape or definition.  Later, when you are looking at a beautiful stone, or a strand of beads, you may use these sketches to pull together a wonderful inspired design!  After all, art is inspired by nature and what better time to observe nature than this time of the year!  Enjoy your spring and let it's beauty inspire you!  Look for some new spring design ideas with complete instructions in upcoming blogs. 

Friday, April 2, 2010

Spring has Officially Sprung on the Gulf Coast

Now that we have recovered from the crazies of the Arts and Crafts Festival weekend, we are settling down and trying to finish all the new custom orders placed by our wonderful customers!  Thanks everyone for making it a great and profitable weekend for Analece and Bayside Beads and the artists we represent.

This week we celebrate Passover and  Easter!  Don't forget to stop in for that last minute perfect jewelry accessory for your outfit!  We have affordable jewelry made in all the beautiful new spring colors to liven up your wardrobe. 

The new May issue of Bead Style Magazine just came in, and it has some wonderful new designs for beaders.  Stop in and pick up a copy today!    New Pandora  style Lampwork Glass and Sterling Silver beads and bracelets are here!   Also new vintage antique copper and pewter beads and findings!   We still have a lot of $8 strands of beautiful freshwater pearls and natural stone in a variety of colors.  And remember, if you are planning something special for Mother's Day, don't wait until the last minute.  Why not consider a beautiful Mother's bracelet with birthstones and children's names engraved, or a fingerprint charm or  pendant with each child's fingerprint and initials.  We do it all right here in our shop, but we need a few weeks notice, so hurry in and place your order today!