• optic character - biaxial + topaz

    Topaz – Natural, Faceted, Pink

    Topaz occurs in many colors, like the orangey pink of this fancy round brilliant gem. However, all topazes have a biaxial + optic character. © Dan Stair Custom Gemstones. Used with permission.

    Article: Refractometer Guide, Part 3: Determining Optic Character and Recognizing Optic Effects

    Credit: Dan Stair Custom Gemstones

    Natural or man madeNatural
    Gem StateFaceted