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      $195.00 USD
      Price

      9.5 SIZE STUNNING WELO WITH 6 TANZANITES FACTORY [SOJ3151a]

      3586
      10

      SKU
      Dimensions (mm)
      12.000 x 8.000 x 4.000mm
      Weight (g)
      0.680
      Ring Size
      9.5
      Colours

      STYLISH OPAL TANZANITE RING

      This is a stylish stunning dress ring with a natural Ethiopian opal enhanced by 6 tanzanites on the side.I buy the Tanzanites from the mines in Arusha Tanzania and they are checked by our in house gemologist .The opal has a beautiful pastel colour which sparkle when moved.

          The workmanship and quality is excellent.

      Sterling silver

      Stamped 925

      Size of opal 12x8 mm app

      Weight of opal 3.40 cts app

      Size of tanzanites 4 mm app

      Ring size[USA] :9.5

      More Information

      Tanzanite is an extraordinary gemstone. It occurs in only one place worldwide -Tanzair africa. Its blue, surrounded by a fine hint of purple, is a wonderful colour. Thanks to its unusual aura and the help of the New York jeweller’s Tiffany, it has rapidly become one of the most coveted gemstones in the world.

      Tanzanite is a blue variety of the gemstone zoisite. It consists of calcium aluminium silicate and is not particularly hard, having a value of 6.5 to 7 on the Mohs scale. For that reason, it should always be worn carefully and never placed in an ultrasonic bath for cleaning or brought into contact with acids.

      The deep blue of the tanzanite is fantastic, and runs from ultramarine blue to light violet-blue. The most coveted colour is a blue surrounded by a delicate hint of purple, which has a particularly wonderful effect in sizes of over 10 carats. The well developed polychromaticity of the tanzanite is typical: depending on the angle from which you look at it, the stone may appear blue, purple or brownish-yellow. Having said that, most raw crystals are somewhat spoiled by a brownish-yellow component, though it can be made to disappear by the cutter if he heats the stone carefully in an oven to approximately 500°. During the procedure he must pay careful attention to the moment at which the colour turns to blue. This burning is a method of treatment which is regarded as customary in the trade, but the raw stones must be as free of inclusions as possible, since otherwise fissures may occur. In fact working with tanzanite can sometimes give even the most experienced cutter a bit of a headache, the cleavage of this gemstone being very pronounced in one direction. This exclusive gemstone is cut in every imaginable shape from the classical round shape to a number of imaginative designer cuts.

      This is what the GIA has to say about this type of opal

      New Play-of-Color Opal from Welo, Ethiopia

      A new source of high-quality play-of-color opal was discovered in early 2008 in Welo Province, Ethiopia, about 500 km north of Addis Ababa. This deposit is geographically distinct from the Mezezo deposit in Shewa Province, which was discovered in the early 1990s (see, e.g., Spring 1994 Gem News, pp. 52–53).

      These contributors examined a parcel of about five rough and 30 cut Welo opals. The cabochons showed good play-of-color ; the vast majority were white and transparent, but some had a bodycolor varying from light yellow to dark “chocolate” brown. Compared to Mezezo opals (e.g., J.-P. Gauthier et al., “L’opale d’Ethiopie: Gemmologie ordinaire et caractéristiques exceptionnelles,” Revue de Gemmologie a.f.g., No. 149, 2004, pp. 15–23), those from the new deposit generally appear much whiter. We noted all spectral colors in the play-of-color in our samples. Most of the cabochons were similar in appearance to opals from Australia or Brazil. However, many samples displayed a columnar structure of play-of-color opal within common opal (figure 2), as first described in material from Mezezo (again, see Gauthier et al., 2004). This feature is only very rarely observed in opals from sources outside Ethiopia.

      The hydrostatic SG of the opals ranged from 1.80 to 2.10. This broad range is in part due to the high porosity of some samples, as revealed by a significant weight increase after immersion in water (up to 8%). Fluorescence varied from inert to moderate yellowish white to both long- and short-wave ultraviolet (UV) radiation. Samples that were inert displayed an unexpected greenish phosphorescence of moderate intensity. No luminescence was observed in the opals with a yellow-to-brown bodycolor, even the light ones; these darker bodycolors are probably due to the presence of iron, which quenches luminescence. The yellow-to-green luminescence is likely due to the presence of uranium (E. Gaillou et al., “The geochemistry of gem opals as evidence of their origin,” Ore Geology Reviews, Vol. 34, 2008, pp. 113–126). Fourier-transform Raman spectra were obtained for several samples using a Bruker RFS 100 spectrometer. All spectra were consistent with opal-CT, with Raman bands at about 1070, 780, 670, and 345 cm-1, and water-related bands at about 3200 and 2950 cm-1.

      Welo opal is found in volcanic rock, possibly a rhyolite. The rough samples we examined consisted of opal (either common or play-of-color) cementing fragments of the host rock. By contrast, opal from Mezezo fills cavities in rhyolite, forming nodules. Despite these differences, the fact that columnar structures are seen in opals from both deposits (but very rarely from elsewhere) seems to indicate similarities in the conditions of their formation.

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      sedajewelery
      sedajewelery
      Welcome to Seda Jewelry, where natural beauty meets exquisite craftsmanship. Led by Paul Sedawie, a distinguished member of the International Coloured Stone Association (ICA) and former president of the Opal Association, our store showcases a stunning collection of jewelry adorned with all-natural gemstones. With a passion for sourcing the finest gemstones from around the world, Paul ensures that each piece of jewelry in our collection is as unique as it is beautiful. From vibrant opals to dazzling diamonds, every gemstone is hand-selected for its exceptional quality and beauty. As a testament to our dedication to quality, all jewelry at Seda Jewelry comes with a money-back guarantee, providing you with peace of mind with every purchase. Explore our collection and discover the perfect piece to add a touch of natural elegance to your style.
      Mermaid Beach, Australia
      Verified
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      • sirdublin
        sirdublin
        Positive

        Looking forward to it! Thx!

      • helmrey
        helmrey
        Positive

        This is quite different than most bracelets. The picture does not do it justice. Good seller. Fast shipping

      • helmrey
        helmrey
        Positive

        These pendants that are hand painted are really neat...all are a bit different. My 3rd purchase. Good seller and fast shipping

      • helmrey
        helmrey
        Positive

        What a wonderful necklace. Quite stunning. Good seller and fast shipping

      • helmrey
        helmrey
        Positive

        Very nice pendant. Good seller

      10%
      Coupon code SEDADEAL
      Valid Until
      4th Mar 2025

      Shipping Details

      Shipping:
      $16.00 21 days via Registered Shipping
      Ships from:
      Australia

      Payment Options

      • paypal
      This seller adds 10.00% tax to transactions in Australia.

      Overview

      Listing Type : Standard
      Product ID : 58942
      Starts : 13th February 2025 06:00 pm PST
      * All prices are in USD