There is no such thing as a “standard” prong. It’s an invention of illiterate content writers. Low-end jewelry is usually finished with a ball-shaped prong tip. High-end jewelry is set with claw prongs. The Eagle-claw prong is the same thing; it just sounds better. Center stones in high-end jewelry are set with claw-prongs, while small stones have round prongs. Round prongs are widely used in low-end jewelry for all stones and sizes. Round prongs are easier and much faster to make.