 |
 BLUE 3pc Hard STEEL Tip Dart Set poly shaft flight NIP 3 Darts $8.45 Time Remaining: 17d 15h 13m Buy It Now for only: $8.45 |
 3X6 Hard Tubed Pool Cue Stick Carry Case Blue Billiard 3 x 6 $39.95 Time Remaining: 16h 27m |
 Sterling Custom 1x1 Oval Blue Hard Case $19.99 Time Remaining: 7d 6h 54m Buy It Now for only: $19.99 |
 2X2 Hard Billiard Pool Cue Stick Carry Case Blue Black $27.45 Time Remaining: 7d 6h 3m Buy It Now for only: $27.45 |
 1X1 Hard Pool Cue Case Blue Billiard Stick 1 x 1 New $8.45 Time Remaining: 7d 6h 3m Buy It Now for only: $8.45 |
 New 3x5 Sport Style Blue Silver Black Hard Case SB 2035 $145.19 Time Remaining: 24d 22h 56m Buy It Now for only: $145.19 |
 3 Piece Brass Hard Tip Indoor Throwing Red White and Blue American Flag Color $5.69 Time Remaining: 5d 18h 25m Buy It Now for only: $5.69 |
 NEW Sterling Custom 2x2 BLUE Oval Hard Case STH4BE $35.99 Time Remaining: 8d 45m Buy It Now for only: $35.99 |
 Blue Multi Flash Kite Poly Royal Hard Dart Flight $1.23 Time Remaining: 12h 40m Buy It Now for only: $1.23 |
 LUCASI LE7 BLUE LUSTER POOL CUE AND 1x1 FORM FIT HARD TUBE CASE SCUFFER $210.00 Time Remaining: 2d 6h 10m Buy It Now for only: $210.00 |
 McDermott Pool Cue GENESIS PEARL BLUE Retired M91S FREE 2x2 Hard Case Extras $195.00 Time Remaining: 7d 12h 13m Buy It Now for only: $195.00 |
 Blue and White Swirl Standard Poly Royal Hard Dart Flight $1.23 Time Remaining: 28d 19h 4m Buy It Now for only: $1.23 |
 Blue and Red Flame Standard Poly Royal Hard Dart Flight $1.23 Time Remaining: 3d 10h 47m Buy It Now for only: $1.23 |
 Pro Series PJ ENL Blue 1x2 Pool Billiard Hard Cue Case $17.59 Time Remaining: 15d 4h 27m Buy It Now for only: $17.59 |
 Pro Sport 3x6 3B6S Black Blue Accents Golf Bag Style Hard Pool Billiard Cue Case $147.99 Time Remaining: 23d 3h 57m Buy It Now for only: $147.99 |
 Blue Flame Pear Poly Royal Hard Dart Flight $1.23 Time Remaining: 12h 40m Buy It Now for only: $1.23 |
 3X6 Hard Pool Cue Stick Carry Case Blue Billiard 3 x 6 $39.95 Time Remaining: 7d 6h 3m Buy It Now for only: $39.95 |
 Blue Kite Poly Royal Hard Dart Flight $1.23 Time Remaining: 12h 40m Buy It Now for only: $1.23 |
 5 Sets BLUE Hard Poly Pear Dart Flights FREE SHIPPING $4.99 Time Remaining: 11d 12h 42m Buy It Now for only: $4.99 |
 Ruthless Rock Hard Granite Blue Standard Dart Flights $1.23 Time Remaining: 29d 13h 24m Buy It Now for only: $1.23 |
 Pro Series Sport 1x1 1B1S Blue Nylon Webbing Pool Billiard Hard Cue Stick Case $28.79 Time Remaining: 22d 11h 10m Buy It Now for only: $28.79 |
 2X2 Hard Tubed Billiard Pool Cue Stick Carry Case Blue Black $27.45 Time Remaining: 3d 4h 22m |
 Blue Standard Poly Royal Hard Dart Flight $1.23 Time Remaining: 12h 40m Buy It Now for only: $1.23 |
 Sterling Blue Pool Cue Stainless Steel Joint Medium Hard Tip Free Shipping $64.99 Time Remaining: 24d 16h 39m Buy It Now for only: $64.99 |
 Blue Pear Poly Royal Hard Dart Flight $1.23 Time Remaining: 12h 40m Buy It Now for only: $1.23 |
 New 2x2 Sport Style Blue Black White Hard Cue Case SB 2022B Blue Pool Cue Case $112.99 Time Remaining: 22d 15h 16m Buy It Now for only: $112.99 |
 Blue Ripple Standard Poly Royal Hard Dart Flight $1.23 Time Remaining: 6d 9h 1m Buy It Now for only: $1.23 |
 Blue Flames Kite Poly Royal Hard Dart Flight $1.23 Time Remaining: 12h 40m Buy It Now for only: $1.23 |
 GLD VIPER Supreme Q Vault Blue Hard Tube Cue Case 1x1 $24.95 Time Remaining: 13d 10h 14m Buy It Now for only: $24.95 |
 Metallic Blue Titanium Cue Stickcludes Free Hard Case $36.50 Time Remaining: 29d 18h 54m Buy It Now for only: $36.50 |
 Pro Series Navy Blue Croc Leatherette 1B1S 1x1 Pool Billiard Hard Cue Stick Case $21.59 Time Remaining: 22d 11h 43m Buy It Now for only: $21.59 |
 Halex Billiard CUE Hard Oval Cordura Cover Pool Stick CASE w Strap Pouch Blue $16.95 Time Remaining: 4d 3h 17m Buy It Now for only: $16.95 |
 BLUE High Speed Hard Dart Flight standard Flights New $2.99 Time Remaining: 12d 14h 30m Buy It Now for only: $2.99 |
 Pro Sport 2x4 Black Blue Accents Golf Bag Style Hard Pool Billiard Cue Case $140.79 Time Remaining: 23d 3h 54m Buy It Now for only: $140.79 |
 Pro Sport SB 2035 3x5 Blue Hard Pool Billiard Cue Case $151.99 Time Remaining: 13d 6h 51m Buy It Now for only: $151.99 |
 Pro Series ROYAL BLUE 2x2 2B2S Pool Billiard Hard Oval Cue Stick Case PR22VRYL $47.99 Time Remaining: 22d 7h Buy It Now for only: $47.99 |
 Aska L2 Blue Billiard Cue + Blue Hard Cue Case $31.95 Time Remaining: 16h 38m Buy It Now for only: $31.95 |
 Lucasi Hybrid L H10 Cue New Free Hard Case Included Free US Shipping Blue $252.79 Time Remaining: 28d 5h 20m Buy It Now for only: $252.79 |
 Pro Sport SB 1011B 1x1 Blue Hard Pool Billiard Cue Case $79.19 Time Remaining: 15d 4h 27m Buy It Now for only: $79.19 |
 Sterling Navy Blue Hard Pool Cue Case for 2 Butts 3 Shafts $55.20 Time Remaining: 17d 5h 4m Buy It Now for only: $55.20 |
 NEW 20 oz Ounce Hard Wood 2 Piece Blue Sword Pool Cue with Brass Joints Case $46.99 Time Remaining: 12d 13h 23m Buy It Now for only: $46.99 |
 1X1 Hard Pool Cue Billiard Stick Carry Case Blue 1 x 1 $8.45 Time Remaining: 5d 4h 19m |
 Blue Pool Hard Cue Case + Aska L6 Blue Pool Cue $49.95 Time Remaining: 20d 25m Buy It Now for only: $49.95 |
 Blue Pool Hard Cue Case + Aska L7 Blue Pool Cue $49.95 Time Remaining: 20d 27m Buy It Now for only: $49.95 |
 Pro Sport SB 2022B 2x2 Blue Silver Golf Bag Style Hard Pool Billiard Cue Case $123.19 Time Remaining: 13d 6h 29m Buy It Now for only: $123.19 |
 Action AC24 2x4 Hard Tube Pool Cue Case Blue $63.20 Time Remaining: 14d 3h 21m Buy It Now for only: $63.20 |
 Sterling Navy Blue Hard Pool Cue Case for 2 Butts 4 Shafts $63.20 Time Remaining: 17d 5h 4m Buy It Now for only: $63.20 |
 Sterling Navy Blue Hard Pool Cue Case for 1 Cue $31.20 Time Remaining: 17d 5h 4m Buy It Now for only: $31.20 |
 Blue Pool Hard Cue Case + Aska L8 Blue Pool Cue $49.95 Time Remaining: 20d 33m Buy It Now for only: $49.95 |
 Aska Blue Dragon Pool Cue + Blue Hard Case 1x1 $49.95 Time Remaining: 20d 14m Buy It Now for only: $49.95 |
 Trademark Global Blue Diamond Fiberglass Cue Stick Includes Free Hard Case $31.49 Time Remaining: 25d 10h 39m Buy It Now for only: $31.49 |
 Trademark Global Sword Cue Stick Includes Free Hard Case Blue $26.99 Time Remaining: 2d 4h 56m Buy It Now for only: $26.99 |
 Action AC35 3x5 Hard Tube Pool Cue Case Blue $76.00 Time Remaining: 14d 3h 27m Buy It Now for only: $76.00 |
 Action AC22 2x2 Hard Tube Pool Cue Case Blue $47.20 Time Remaining: 14d 2h 28m Buy It Now for only: $47.20 |
 Action AC22 2x2 Hard Tube Pool Cue Case Royal Blue $47.20 Time Remaining: 14d 2h 32m Buy It Now for only: $47.20 |
 Sterling Navy Blue Hard Pool Cue Case for 3 Butts 6 Shafts $71.20 Time Remaining: 17d 5h 4m Buy It Now for only: $71.20 |
 Sterling Navy Blue Hard Pool Cue Case for 2 Cues $44.00 Time Remaining: 17d 5h 4m Buy It Now for only: $44.00 |
 Blue Pool Hard Cue Case + Aska L2 Blue Pool Cue $49.95 Time Remaining: 20d 17m Buy It Now for only: $49.95 |
 Blue Pool Hard Cue Case + Aska L4000 Blue Pool Cue $49.95 Time Remaining: 20d 20m Buy It Now for only: $49.95 |
 Competition Case 2 butt and 2 shaft Hard Tube Blue $109.00 Time Remaining: 12d 11h 46m Buy It Now for only: $109.00 |
Blue Zircon Gems
There are relatively few gemstone varieties with good hardness and brilliance that occur in the color blue. Sapphire is the most famous, and is found in the full range of blues, from the palest blue to blue-black. Blue topaz, produced by irradiating colorless topaz, is the most popular of all blue gemstones, since it is widely available at attractive prices and is found in light and medium-dark tones. Other choices in blue include tanzanite (violet blue) and aquamarine (light blue). Tourmaline and spinel can sometimes be found in blue, but only rarely.
The most brilliant blue gemstone is undoubtedly zircon, which has a higher refractive index than even sapphire, tanzanite or spinel. But zircon is not well known by the general public, who are apt to confuse it with cubic zirconia, a synthetic diamond simulant. Zircon is a natural mineral, zirconium silicate, and is found in a range of colors, including white, blue, yellow, orange, brown, rose and green.
Blue zircon, the most popular color, is produced by heat treatment of brown zircon. But not all brown zircon will turn blue when heated; only some zircon has the right physical structure to turn blue when heated. This is why most blue zircon comes from Cambodia or Burma.
Blue zircon has some unique properties that make it very popular with gemstone aficionados. Not only does zircon have outstanding brilliance, but it also has very strong dispersion or fire, the tendency to split white light into the spectral colors. Zircon also has very pronounced birefringence or double refractivity, where the difference between the two refractive indices is unusually high. This can be often be observed with the naked eye when you look down through the table of a cut zircon: you will observe facet doubling that makes the facet edges looked blurred.
Though blue zircon is a reasonably hard gem, with a hardness on the Mohs scale of about 7 to 7.5, it is somewhat brittle and therefore sensitive to knocks and pressure. Zircon has the tendency to wear along facet edges. Its use in rings should therefore be limited to protective settings or occasional wear jewelry.
Blue zircon can be found in a range of blue tones from very pale to a saturated medium blue. Due to pleochroism, blue zircon can look slightly greenish when view from one direction.
About the Author
AJS Gems, Bangkok a leading online dealer in high quality gemstones, including zircon, Burma ruby, sapphire, spinel and tourmaline. Blue Zircon Photos
Hard Blue Tough