![]() Quite often, however, a mosaic pattern is an indication of an assembled or lab-created stone. When found in natural opals, it adds meaningfully to the stone's value. ![]() Mosaic opalĪ mosaic pattern (also known as a harlequin pattern) is a highly desirable display of opal color flash that resembles the squares of a quilt. This makes boulder opals great for expressive pendants and a less common choice for rings. The underlying rock actually remains part of the stone, typically making for freeform organic shapes. Opal that forms directly on a rock is known as boulder opal. These aren't opals at all, so that's a particularly frustrating choice of words. Finally, some online dealers use the term "fire opal" to erroneously refer to imitation opals, made largely of glass and epoxy. In this context, most opals are "fiery" or show "intense fire." Don't confuse this with a "fire opal," which is a very specific type of solid-colored opal (which, ironically, usually doesn't have any multi-colored flashes). It most frequently refers to the multicolored flashes on the body of many opals. "Fire" is a term with multiple meanings relating to opal. As the name suggests, fire opals are most commonly found in Mexico. More rarely, there are fire opals with multicolored flashes-but these are typically collector stones and difficult to find. ![]() Unlike other types of opal, they typically have just a single color and don't have any other flashes of color, making them look much more like typical colored gems. "Fire opal" and "Mexican fire opal" refer to a specific type of opal with a transparent yellow, orange, or red body color. In this section, we'll provide a brief overview of these. Specialty opal varietiesīeyond the core categories we've already discussed, there are a handful of opal types and terms you're likely to encounter. Similar to black opal, the most colorful crystal opals are quite rare. Their intense color makes crystal opals a popular choice. That allows flashes of color to shine through uninhibited. In contrast to the mostly opaque options discussed so far, crystal opals feature a totally translucent body. Back to main menu Styles Unique engagement rings Non-traditional engagement rings Alternative engagement rings Art Deco engagement rings Modern engagement rings Ring features Antique halo rings Sunburst halo rings Unique halo rings Cluster engagement rings Diamond cluster rings Bezel rings Toi et moi rings Three stone rings East-west rings Crown & tiara engagement rings Exploring gemstones Gemstone rings with unique center stones Sapphire rings in every color Gem shapes and cuts Princess cut engagement rings Emerald cut engagement rings Marquise cut engagement rings Cushion cut engagement rings Pear cut engagement rings Hexagon engagement rings Kite engagement rings What's your inspiration? Turtle engagement rings Owl engagement rings Dragonfly engagement rings Snake engagement rings Cat engagement rings Mermaid engagement rings Tree engagement rings Autumn engagement rings Feather engagement rings Infinity engagement rings Mountain engagement rings Moon and stars engagement rings Music themed engagement rings Flower engagement rings Lotus engagement rings Lavender engagement rings Geeky engagement rings Hogwarts houses engagement rings Magic wand rings Zelda engagement rings Pokémon engagement rings Golden Snitch engagement rings Star Wars engagement rings Fantasy engagement rings Superhero engagement rings Nightmare Before Christmas engagement rings Skull engagement rings Celtic engagement rings
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