This is a Black Crushed Opal glass pipe made by Harold Ludeman. The tubing used to make this is made in house and is the product of 3 years of working on making very dense/sparkly crushed opal tubing. 

• This is a made to order product. 
• Signed and dated by Harold Ludeman
• Handmade in the USA, Portland Oregon
• Dimensions:  Will Vary, but between 4.7"-5"+
• Weight: 5+ ounces 
• Bowl Size : Thumb (fat)
• Bowl Hole 3.2-3.8mm (avg 3.5) 
• Carb is raised and is between 6-7mm
• Mouth hole is 6mm but no bigger than 7mm
• Flat spot is very flat, I go for a stamped out of metal look, so it sits very well.
• Opal is Kyocera and is Synthetic (Real opals have impurities and can't survive the glass blowing/heating process)
• Clear is Simax borosilicate, which is made in the Czech Republic and some of the best in the world. 
• Black base color is North Star Glass which is made right here in Portland Oregon.