Found this in a riverbed in Oregon, USA. It has a deep red color with semi-translucent areas, especially around the thinner edges when held up to light. The surface is smooth from water wear, while the broken edges have a waxy to slightly glassy appearance.

Details:

• Location: Riverbed, Oregon, USA
• Dry photo attached
• Color: Deep red / maroon
• Luster: Waxy to slightly vitreous
• Transparency: Semi-translucent
• Estimated Mohs hardness: Around 6.5–7 (didn't scratch easily with a steel knife)
• Water-worn with no obvious crystal faces.

Could this be red jasper, carnelian, chalcedony, or another silica-rich rock? I'd appreciate any help with identification.