Mystery Aventurine Marble with Open Window

An early experimental marble from Kraz Glass featuring mystery Aventurine and one of my first attempts at creating an open window that reveals the inside of the marble.

This piece was made while I was still learning how to build depth and intentionally expose internal structure rather than fully covering the design. The open window gives you a direct look into the center of the marble, while the Aventurine adds subtle shimmer and movement throughout.

Because this comes from my earlier work, it has the natural quirks and imperfections of experimentation—but that is exactly what makes it special. It represents one of the first times I started thinking beyond the surface and using the marble itself to show what was happening inside the glass.

Daniel "Kraz" Krasnopolsky is a New York glass artist and instructor at Long Island Glass. Known for his creative sculptures, colorful pendants, and engaging teaching style. Enjoying making memorable creations from molten glass, truly a passion from within.