Here you will find a wide assortment of Australian Boulder Opals and Mexican Fire and Matrix Opals. Their iridescence is magical. The more intense and colorful the play of fire and the better distributed throughout the entire stone, the more desirable the opal. The pattern of fire is also a contributing factor to desirability and value. Ordinarily broad flashes of color or rainbow iridescence are preferable to pinprick patterns of fire. Each February, I attend the Tucson gem and mineral show and handpick exceptional opals and fire agates to incorporate into my one of a kind designs. Many of these are available separately.