Here are Todays Fab Carats Blue Deals
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 100 Ct NATURAL UNTREATED BEAUTIFUL STAR RUBY VIDEO $14.40 Time Remaining: 29d 11h 6m Buy It Now for only: $14.40 Buy It Now | Add to watch list |
 RARE NATURAL UNTREATED PURPLE BLUE TANZANITE OVAL BEADs STRAND 492ct 14 STRAND $99.99 (1 Bid) Time Remaining: 3h 29m Bid now | Add to watch list |
 147 Cts DAZZLING AAA VIOLET BLUE NATURAL TANZANITE OVAL $9.99 (1 Bid) Time Remaining: 4h 56m Bid now | Add to watch list |
 670 Ct NATURAL UNTREATED DESIGNER STAR RUBY VIDEO $36.00 Time Remaining: 29d 10h 55m Buy It Now for only: $36.00 Buy It Now | Add to watch list |
 Rare Gem Eye Clean Benitoite 028 Carats $81.00 (6 Bids) Time Remaining: 14h 11m Bid now | Add to watch list |
 107ct SHIMMERING RARE LIGHT GREEN BLUE NATURAL TANZANITE $24.99 Time Remaining: 9d 15h 1m Buy It Now for only: $24.99 Buy It Now | Add to watch list |
 Quality NATURAL 696ct Loose Oval TANZANITE Violet Blue Gem $1,026.00 (8 Bids) Time Remaining: 14h 10m Bid now | Add to watch list |
 QUALITY 2 pc NATURAL 885cwt Loose Oval TANZANITE LOT NR $510.00 (4 Bids) Time Remaining: 14h 11m Bid now | Add to watch list |
 FREE Diamond Gemstones Each New Mix Lot loose Gorgeous NATURAL GEMSTONES $11.99 Time Remaining: 1d 21h 39m Buy It Now for only: $11.99 Buy It Now | Add to watch list |
 Certified 106 Ct Clean Natural Violetish Blue Tanzanite $29.00 (8 Bids) Time Remaining: 7h 13m Bid now | Add to watch list |
 BLACK LEOPARD OPAL MEXICO 644Ct ROYAL JEWELRY GRADE COLLECTORS DREAM STONE $62.00 Time Remaining: 29d 17h 25m Buy It Now for only: $62.00 Buy It Now | Add to watch list |
 209 Cts DAZZLING HUGE SPARKLE AAA BLUE NATURAL TANZANITE TRILL $34.00 (8 Bids) Time Remaining: 5h 19m Bid now | Add to watch list |
 194 Cts Attractive Luster Bi Color Purple Blue Green Tanzanite $0.99 Time Remaining: 16h 30m Bid now | Add to watch list |
 TANZANITE GEM TRILLION NATURAL LOOSE 3 MM GEMSTONE LOT WHOLESALE LOOSE TANZANITE $10.00 Time Remaining: 29d 1h 22m Buy It Now for only: $10.00 Buy It Now | Add to watch list |
 161 Stunning AAA Color Purple Blue Tanzanite Matching Pair 60MM IF Natural $22.60 (8 Bids) Time Remaining: 5h 24m Bid now | Add to watch list |
 10 Carats Blue Topaz Briolette Beads $9.95 Time Remaining: 2d 15h 25m Buy It Now for only: $9.95 Buy It Now | Add to watch list |
 361 Cts DANCING MULTI COLOR PLAY AUSTRALIA NATURAL OPAL $12.50 (3 Bids) Time Remaining: 4h 57m Bid now | Add to watch list |
 155Ct Stunning Glow Super Cut Natural Zircon 11031868 $24.95 Time Remaining: 53m Bid now | Add to watch list |
 495cts RARE BEAUTIFUL AFRICAN BLUE MOONSTONE MARQUISE $69.99 Time Remaining: 9d 15h 47m Buy It Now for only: $69.99 Buy It Now | Add to watch list |
 Flawless 270 Cts Natural Bi Color Violet Blue Tanzanite Full Fire Luster Oval $45.88 (6 Bids) Time Remaining: 18h 35m Bid now | Add to watch list |
 138 CTS GREENISH BLUE PARAIBA COLOR NATURAL APATITE $15.00 Time Remaining: 29d 15h 15m Buy It Now for only: $15.00 Buy It Now | Add to watch list |
 Started 099 No Reserve UNCOMMON CORNFLOWER BLUE CEYLON SAPPHIRE 071 CT $15.50 (14 Bids) Time Remaining: 4h 59m Bid now | Add to watch list |
 073 ct Natural Earth Mined Emerald Certified NR $32.00 (6 Bids) Time Remaining: 15h 39m Bid now | Add to watch list |
 1792 Ct NATURAL UNTREATED BEAUTIFUL STAR RUBY VIDEO $19.80 Time Remaining: 29d 11h Buy It Now for only: $19.80 Buy It Now | Add to watch list |
 Certified 107 Ct Clean Natural Violetish Blue Tanzanite $31.00 (10 Bids) Time Remaining: 15h 49m Bid now | Add to watch list |
 413ct HIEND LUSTROUS VIVID BLUE COLOR NATURAL INDICOLITE TOURMALINE $249.99 Time Remaining: 9d 15h 33m Buy It Now for only: $249.99 Buy It Now | Add to watch list |
 Started 099 No Reserve VVS CUSHION MEDIUM BLUE CEYLON SAPPHIRE 079 CT $26.00 (12 Bids) Time Remaining: 5h 29m Bid now | Add to watch list |
 16+CARATS 14MM ROUND TANZANITE LOOSE GEMSTONE $4,254.00 Time Remaining: 31m Buy It Now for only: $4,750.00 Buy It Now | Bid now | Add to watch list |
 460cts BEST GRADE RARE BEAUTIFUL AFRICAN BLUE MOONSTONE CABOCHON $49.99 Time Remaining: 9d 15h 24m Buy It Now for only: $49.99 Buy It Now | Add to watch list |
 IGI Certified 459ct AAAA Natural DBlock Tanzanite Marquise Cut Deep Blue Violet $157.50 (10 Bids) Time Remaining: 1d 12h 43m Bid now | Add to watch list |
 ONLY 099 1pc 18mm Diamond Cut MEDIUM BLUE Sapphire $0.99 Time Remaining: 24d 3h 34m Buy It Now for only: $0.99 Buy It Now | Add to watch list |
 063 ct Natural Earth Mined Emerald Certified NR $34.00 (12 Bids) Time Remaining: 15h 29m Bid now | Add to watch list |
 938 Cts WOW DAZZLING NATURAL BI COLOR TOURMALINE PEAR $12.49 (4 Bids) Time Remaining: 21h 16m Bid now | Add to watch list |
 2268 Carat Lots of Natural Apatite Rough Over 1 Pound Each $8.99 Time Remaining: 18h Buy It Now for only: $8.99 Buy It Now | Add to watch list |
 474 CTS CERTIFIED GORGEOUS BLUE RARE HUGE UNTREATED NATURAL TANZANITE $17.38 (5 Bids) Time Remaining: 8h 36m Bid now | Add to watch list |
 809ct SHIMMERING RARE SANTAMARIA AQUAMARINE CABOCHON $89.99 Time Remaining: 9d 18h 59m Buy It Now for only: $89.99 Buy It Now | Add to watch list |
 Quality NATURAL 586ct Loose Oval TANZANITE Violet Blue Top QUALITY $336.00 (5 Bids) Time Remaining: 1d 12h 10m Bid now | Add to watch list |
 071 Ct Octagon Natural Violetish Blue Tanzanite Gems $12.50 (8 Bids) Time Remaining: 6h 19m Bid now | Add to watch list |
 LAB CORNFLOWER BLUE SAPPHIRE HUGE CUSHION 20 100 CTS AAA FREE SHIP $21.00 Time Remaining: 26d 22h 8m Buy It Now for only: $21.00 Buy It Now | Add to watch list |
 Beautiful QUALITY NATURAL 406 ct Loose Oval TANZANITE Violet Blue $105.00 (4 Bids) Time Remaining: 1d 14h 9m Bid now | Add to watch list |
 1020cts RARE BEAUTIFUL AFRICAN BLUE MOONSTONE LONG OVAL $99.99 Time Remaining: 9d 15h 52m Buy It Now for only: $99.99 Buy It Now | Add to watch list |
 NATURAL 551 ct Loose QUALITY Pear TANZANITE Blue violet $223.50 (6 Bids) Time Remaining: 1d 14h 10m Bid now | Add to watch list |
 109 Ct Oval Shape Natural Greenish Blue Sapphire Thailand $8.50 (4 Bids) Time Remaining: 5h 31m Bid now | Add to watch list |
 2905cts Oval cut 2220mm Blue Green Bicolor Ametrine Quartz Gemstone VVS Grade $12.62 Time Remaining: 28d 20h 30m Buy It Now for only: $12.62 Buy It Now | Add to watch list |
 204 Ct Pear Shape Natural Gem Swiss Blue Topaz From Brazil $4.00 (4 Bids) Time Remaining: 5h 37m Bid now | Add to watch list |
 344CT CERTIFIED ULTRA RARE AAA GREEN MASTER CUT DEMANTOID GARNET $5,398.00 Time Remaining: 29d 14h 58m Buy It Now for only: $5,398.00 Buy It Now | Add to watch list |
 762Ct IGI CERTIFIED GORGEOUS D BLOCK NATURAL BLUISH VIOLET TANZANITE $333.00 (12 Bids) Time Remaining: 20h 50m Bid now | Add to watch list |
 IGI Certified 448 ct AA Natural DBlock Tanzanite Cushion Cut Deep Violet Green $112.50 (19 Bids) Time Remaining: 1d 12h 27m Bid now | Add to watch list |
 East Java Drusy Agate Cab 37x27x10mm Sparking Green 76CTS $20.70 Time Remaining: 5d 13h 24m Buy It Now for only: $20.70 Buy It Now | Add to watch list |
 Flawless 396 Cts Outstanding Luster Bi Color Blue Green Tanzanite Baguette Cut $34.33 (3 Bids) Time Remaining: 1d 17h 35m Bid now | Add to watch list |
 770 Ct NATURAL UNTREATED BEAUTIFUL STAR RUBY VIDEO $16.20 Time Remaining: 29d 10h 50m Buy It Now for only: $16.20 Buy It Now | Add to watch list |
 165Ct Natural Round Zircon Pair for Earings 11031850 $24.95 Time Remaining: 50m Bid now | Add to watch list |
 GEMSTONES CALLED TANZANITE 100 REAL LARGE LOT ALL OVALS 100 CARETS PLUS TOP GEM $85.00 Time Remaining: 11h 33m Bid now | Add to watch list |
 509CT CERTIFIED NATURAL VVS1 VIOLET BLUE TANZANITE $768.00 Time Remaining: 29d 15h Buy It Now for only: $768.00 Buy It Now | Add to watch list |
 126 Ct Oval Shape Natural Gem Greenish Blue Sapphire $7.50 (3 Bids) Time Remaining: 6h 15m Bid now | Add to watch list |
 132ct TOP GRADE AND LUSTER NATURAL SANTA MARIA AQUAMARINE $24.99 Time Remaining: 9d 15h 48m Buy It Now for only: $24.99 Buy It Now | Add to watch list |
 Ocean Jasper Pendant Bead Set $6.06 (4 Bids) Time Remaining: 2h 45m Bid now | Add to watch list |
 181 ct AA+ Natural DBlock Unheated Tanzanite Stunning Cushion Cut Blue Violet $56.00 (4 Bids) Time Remaining: 1d 12h 24m Bid now | Add to watch list |
 PERFECT GEM 188CTNATURAL BLUE TOPAZ ROUGH BLUE AFRICA ROU14389 $24.99 Time Remaining: 29d 7h 16m Buy It Now for only: $24.99 Buy It Now | Add to watch list |
 284 Cts DANCING MULTI COLOR PLAY AUSTRALIA NATURAL OPAL $10.50 (2 Bids) Time Remaining: 5h 2m Bid now | Add to watch list |
 1775cts Oval cut 1816mm Blue Tanzanite Quartz Gemstone VVS Grade Fabulous $5.45 Time Remaining: 28d 19h 32m Buy It Now for only: $5.45 Buy It Now | Add to watch list |
 132 Ct Fancy Shape Natural Blue Sapphire Thailand $5.50 (4 Bids) Time Remaining: 12h 27m Bid now | Add to watch list |
 IF 279 Attractive Luster Miracle Bi Color Purple Blue Tanzanite $36.99 (5 Bids) Time Remaining: 1d 17h 14m Bid now | Add to watch list |
 12ct Namibian Blue Chalcedony Cab Facet Lapidary Tumbled Rough Stone NOT DYED $22.00 Time Remaining: 29d 9h 25m Buy It Now for only: $22.00 Buy It Now | Add to watch list |
 Certified 167 Ct Clean Violetish Blue D Block Tanzanite $28.00 (8 Bids) Time Remaining: 1d 5h 25m Bid now | Add to watch list |
 MACTHING PAIR 105 CT NATURAL EARTH MINED GEM STONE ROUND CUT NEON BLUE APATITE $14.99 Time Remaining: 2d 11h 13m Buy It Now for only: $14.99 Buy It Now | Add to watch list |
 Unheated GIA Certified Natural Blue Sapphire Oval 426ct $1,001.00 (16 Bids) Time Remaining: 1d 16h 10m Bid now | Add to watch list |
 121 ct AA+ Natural DBlock Unheated Tanzanite Overwhelming Round Cut Violet Blue $16.60 (3 Bids) Time Remaining: 1d 12h 15m Bid now | Add to watch list |
 AAA Sparkling Green Indo Drusy Cab 47x17x12mm 52CTS $20.70 Time Remaining: 5d 14h 39m Buy It Now for only: $20.70 Buy It Now | Add to watch list |
 142 ct AAA+ Natural DBlock Unheated Tanzanite Winsome Trillion Cut Violet Blue $52.00 (7 Bids) Time Remaining: 1d 12h 30m Bid now | Add to watch list |
 RARE SET 155CT 13pcs Top Round Diamond Cut Natural Color Change Garnet 27mm $131.00 Time Remaining: 2d 20h 22m Buy It Now for only: $131.00 Buy It Now | Add to watch list |
 142 Ct Oval Shape Natural Blue Tourmaline Nigeria Unheated $0.99 (1 Bid) Time Remaining: 8h 5m Bid now | Add to watch list |
 Flawless 547 Cts Attractive Luster Natural AA+ Bi Color Purple Blue Tanzanite $65.00 (12 Bids) Time Remaining: 16h 54m Bid now | Add to watch list |
 10mm Trillion Natural Blue Fire Mystic Quartz 352cts $3.99 Time Remaining: 11d 10h 30m Buy It Now for only: $3.99 Buy It Now | Add to watch list |
 129 ct AA+ Natural DBlock Unheated Tanzanite Fabulous Cushion Cut Blue Violet $41.00 (3 Bids) Time Remaining: 1d 12h 6m Bid now | Add to watch list |
 160ct RARE LUSTROUS PELA GREEN BLUE ELBITE TOURMALINE $99.99 Time Remaining: 8d 17h 41m Buy It Now for only: $99.99 Buy It Now | Add to watch list |
 270 ct Natural Unheated Rare Blue Shade Multicolour Axinite From Pakistan $9.99 (1 Bid) Time Remaining: 9h 36m Bid now | Add to watch list |
 Certified 116 Ct Natural Violetish Blue Sapphire Ceylon $30.00 (10 Bids) Time Remaining: 13h 13m Bid now | Add to watch list |
 BLUE FIRE RAINBOW MOONSTONE ROUND SHAPE CABOCHON $20.00 Time Remaining: 27d 4h 47m Buy It Now for only: $20.00 Buy It Now | Add to watch list |
 129 ct AA Natural DBlock Unheated Tanzanite Awesome Oval Cut Blue Violet $31.00 (3 Bids) Time Remaining: 1d 11h 57m Bid now | Add to watch list |
 2 KG Plus Ultra Beauty Natural Royal Blue Lapis Lazuli Eagle From Afghanistan $800.00 Time Remaining: 6d 19h Buy It Now for only: $800.00 Buy It Now | Add to watch list |
 208Ct AAA Dazzling Excellent Fire Sparkling 100Natural Purplish Blue Tanzanite $122.50 (13 Bids) Time Remaining: 14h Bid now | Add to watch list |
 Certified 8993 Ct Clean Natural Blue Topaz Brazil Octagon Checkerboard Cut $56.10 (10 Bids) Time Remaining: 12h 47m Bid now | Add to watch list |
 205cts INDICOLITE Blue TOURMALINE Unheated Natural GEMSTONE $49.50 Time Remaining: 4d 13h 8m Buy It Now for only: $49.50 Buy It Now | Add to watch list |
 204cts 100 Clear Transparent Clarity Metallic Neon Blue Solid Welo Opal $13.50 (4 Bids) Time Remaining: 8h 20m Bid now | Add to watch list |
 AAA Sparkling Lemon Yellow Drusy Cab 45x30x11mm 98CTS $23.00 Time Remaining: 5d 16h 5m Buy It Now for only: $23.00 Buy It Now | Add to watch list |
 Flawless 340 Cts Natural Bi Color Blue Green Tanzanite Full Fire Luster Oval $20.50 (7 Bids) Time Remaining: 1d 19h 12m Bid now | Add to watch list |
 IGI Certified 628 ct AAA IF Natural DBlock Tanzanite Oval Cut Deep Blue Violet $293.00 (16 Bids) Time Remaining: 1d 12h 40m Bid now | Add to watch list |
 Royston USA Mine Blue Brown Natural Turquoise Cabochon $16.50 Time Remaining: 22d 13h 54m Buy It Now for only: $16.50 Buy It Now | Add to watch list |
 1346 Cts DAZZLING COLOMBIAN GREEN 100 NATURAL EMERALD $100.00 (4 Bids) Time Remaining: 1d 5h 22m Bid now | Add to watch list |
 BLACK LEOPARD OPAL MEXICO 693Ct ROYAL JEWELRY GRADE EXTREMELY RAREUNIQUE $66.00 Time Remaining: 29d 16h 50m Buy It Now for only: $66.00 Buy It Now | Add to watch list |
 NICE 3810ct NATURAL UNHEATED BLUE SAPPHIRE ROUGHFREE SHIPPING $7.99 Time Remaining: 32m Bid now | Add to watch list |
 453 CTS 19 PCS WHOLESALE LOT UNTREATED NATURAL LAPIS LAZULI GEMSTONES $9.99 (1 Bid) Time Remaining: 6h 44m Bid now | Add to watch list |
 DEFINITIVE BLUE 7mm ROUND LONDON BLUE TOPAZ LOOSE GEM $7.25 Time Remaining: 13d 15h 53m Buy It Now for only: $7.25 Buy It Now | Add to watch list |
 Free Shipping Flawless 265 Cts Luster Natural Bi Color Violet Blue Tanzanite $22.50 (2 Bids) Time Remaining: 2d 17h 35m Bid now | Add to watch list |
 OVER 100 CARATS OF LOOSE NATURAL GEM MIX $26.99 Time Remaining: 9d 9h 54m Buy It Now for only: $26.99 Buy It Now | Add to watch list |
 Oval Checkerboard 710 Ct Natural Gem Swiss Blue Topaz From Brazil $1.10 (2 Bids) Time Remaining: 13h 9m Bid now | Add to watch list |
 IGI Certified 574 ct AAA+ IF Natural DBlock Tanzanite Oval Cut Deep Blue Violet $338.00 (11 Bids) Time Remaining: 1d 12h 57m Bid now | Add to watch list |
 84 carat STUNNING BLUE LAPIS WITH PYRITE PEAR SHAPE CABOCHON $22.00 Time Remaining: 27d 4h 5m Buy It Now for only: $22.00 Buy It Now | Add to watch list |
 UNHEATED 194 Cts DAZZLING COLOMBIAN GREEN 100 NATURAL EMERALD OCTAGON $12.55 (3 Bids) Time Remaining: 1d 19h 4m Bid now | Add to watch list |
More Great Information on Carats Blue:
Why You Need To Know About Fluorescence In Diamonds by Gregg Hall
With diamonds most people are familiar with the 4Cs which is short for carats, color, cut, and clarity. There is another very important characteristic of diamonds known as fluorescence that also goes towards valuating a diamond and determining what it is really worth. The actual terminology is known as photo-luminescence which is created by traces of the chemical boron present in the stone which becomes active when it is exposed to ultraviolet light.
The stones are graded by the amount of blue that is seen in the diamond with the following determinations: intense blue, strong blue, strong, medium blue, medium, faint, and none for the clearest stones with no trace of boron. In earlier days the blue tinted diamonds were actually desirable due to the fluorescence in the diamond but nowadays the larger number of consumers prefer the colorless variety.
Still there are some people that seem to be moving back to the blue-white coloration but if you are one of these you will want to be cautious and be sure to view the stone in a variety of light conditions including fluorescent light, sunlight, and the black light used by jewelers. Diamonds that possess the fluorescent quality can sometimes appear hazy in sunlight and may even emit a glow in nightclubs.
As time has gone by it has become harder and harder to find truly colorless diamonds with the High Quality color grades of D through G being very difficult to obtain at a decent price. If your intention is to purchase a stone with a color grade of H or more it may actually be advantageous and may make the diamond more valuable and good looking. Sometimes the presence of some blue fluorescence can help to counter other variants in a diamond such as a yellow look.
There are also diamonds that contain an orange or yellow coloration and you will find that any jeweler that knows diamonds will advise you not to purchase a stone like this unless you are getting it extremely cheap and it is meant more as costume jewelry than as a high quality diamond. In general, it is best to try to find a stone that is as clear as possible and if any color is present, maybe just the slightest hint of blue.
This article is only meant to give you a brief overview of things that you need to be aware of when you are looking for diamonds. It is always a good idea to do thorough research about these precious gems before you buy so that you know what you are getting.
Gregg Hall is an author living with his 18 year old son in Jensen Beach, Florida. Find more about jewelry as well as a quality diamonds at http://www.nsearch.com
Article Source: http://www.earticlesonline.com/Article/Why-You-Need-To-Know-About-Fluorescence-In-Diamonds/292995