Here is a professional product description for the Rainbow bookends, highlighting the specific architectural details and technical specifications from your images.

Rainbow Sculptural Marble Bookends

Graceful Curves and Timeless Strength

Add a touch of ethereal beauty to your home library with our Rainbow bookends. Inspired by the soft, repetitive geometry of a desert arch, these bookends feature a stunning multi-layered concentric design carved from premium natural stone. The polished surface showcases organic grey veining, ensuring that each set is a one-of-a-kind functional sculpture for your shelves.

Elegant Design Meets Serious Stability

The Rainbow model is designed for the collector who values both form and function. Its wide, semi-circular base provides an expansive surface area for maximum grip, while the graduated "ribbed" texture adds depth and a tactile, architectural feel. These are not just book supports; they are statement pieces that bring a sense of calm and order to any modern or minimalist space.

Key Features

• Artistic Arched Silhouette: A beautiful, tiered rainbow design that adds a soft, organic feel to rigid bookshelves.

• Substantial Support: Crafted with a 15 mm thickness for a premium, heavy-duty feel.

• Heavily Weighted: At 2180 gm, these are among our most stable models, capable of holding large hardcovers and heavy journals securely in place.

• Natural Stone Finish: Features a smooth, polished white surface with unique natural marble veining.

Specifications

• Name: Rainbow

• Height: 5.5 Inches

• Base Width: 4.5 Inches

• Thickness: 15 mm

• Weight: 2180 gm

• Color: Polished White with natural veining