46 x 30 mm. 50 cts. Oregonite (not to be confused with the nickel-iron arsenide mineral oregonite) jasper came on the market briefly during the mid-20th century, whereupon it disappeared. Pieces still turn up for sale, so some might still being dug, or they could be newly cut from old stock rough. In appearance, oregonite is very similar to kinradite from California. Grants Pass area of Oregon.