Llanite Sphere Value Guide

The Llanite Sphere is a prized collectible crafted from a rare porphyritic rhyolite found exclusively in the Llano Uplift of Texas. Its geological uniqueness stems from the striking contrast between its dark matrix and the vibrant, sky-blue quartz crystals embedded within.

What affects the value of Llanite Sphere?

• Size and weight of the sphere, with larger diameters significantly increasing the market price.
• Density and distribution of the blue quartz crystals; more frequent and larger 'blue eyes' command higher values.
• The quality of the polish and the absence of surface pits or fractures in the rhyolite matrix.
• The vibrancy of the pink feldspar contrast against the darker groundmass.

How to Identify Llanite Sphere?

• Look for the signature hexagonal blue quartz phenocrysts which are the hallmark of authentic Llanite.
• Verify the presence of pinkish-orange microcline feldspar crystals scattered throughout the dark reddish-brown rhyolite base.
• Check for a high-gloss polished finish that enhances the chatoyancy of the blue quartz inclusions.
• Confirm the origin as the Llano Uplift region in Texas, as this is the only known locality for this specific mineral composition.

History of Llanite Sphere

Llanite is a unique type of Rhyolite found only in the Llano Uplift region of Texas, USA. It is characterized by its distinct blue quartz phenocrysts and pinkish feldspar. Discovered in the early 20th century, it is highly sought after by collectors for its striking appearance and rarity.