Fascinating Vascular Opal Gemstone from Mexico, 5.21 cts., 13x10 mm., Cushion ShapeGem: Vascular Opal Weight: 5. 21 cts. Size: 13. 5 x 10. 3 mm. Color: Red, Orange, Yellow and White Clarity: I Cut: Cushion Locality: Northern Mexico Treatment: None Here is something fantastic! This is Vascular Opal! This material was found this year in northern Mexico. The name is derived from the red vein formations that look like blood vessels in the yellow body of the Opal. This stone has an interesting cloud formation that looks like bodily