Simulated Tanzanite  Round Faceted Stones


This round simulated tanzanite features a bluish-purple color and facets that catch and reflect light. Use it by itself for simple earring or ring designs, or highlight the vibrant color by pairing it with contrasting-color stones in a pendant or brooch for a multicolor look. Tanzanite is one of the birthstones for December.

Producing consistent purple colors in laboratory-created gemstones can be difficult. By using a tinted adhesive to connect two sections of clear lab-created spinel at the girdle, creating a doublet, labs can produce consistent color throughout the stone. Unless the stone is immersed in highly refractive liquids, it is impossible to tell that only the girdle zone of a doublet has color. This simulated tanzanite displays a beautiful color.

Round-cut gemstones are highly popular and the most commonly available. Rio round gemstones are calibrated for size and hand inspected to ensure maximum attractiveness.

  • Cutting Center : Germany
  • Stone(s) shape : Round
  • Material : Tanzanite
  • Stone type : Manmade
  • Color : Bluish-Purple
  • Mohs hardness : 9
  • Refractive index : 1.76–1.77
  • Enhancement : Assembled (ASBL)
  • Specific gravity (g/cm3) : 4
  • Stone type : Manmade

Please Note:

• Because laboratory-created spinel doublets are assembled with an adhesive, it is important not to apply heat to the gemstone. To be safe, clean these gemstones using warm, soapy water and a soft brush.
• Unless precisely calibrated to an exact size, gemstone sizes vary slightly. Rio allows a tolerance of +/– 0.2mm for gemstones larger than 4mm.

Catalog page: 2019-2020 Gems and Findings & Display and Packaging Catalog p.725