A floater is a specimen - single crystal or cluster - that is crystallized on all sides and shows no attachment to matrix. Floaters commonly grow free in open cavities or detach and then continue to grow, re-healing any broken surfaces. A floater may include one or more crystals; a single-crystal floater can also be double terminated, but clusters can be floaters without every crystal being double terminated.
How It Forms
- Open-space growth: Free-floating development within vugs, geodes, or pockets yields faces all around.
- Detachment & re-healing: A piece breaks off the wall and continues to grow; former breaks re-crystallize.
- Fluid/soft substrate: Growth in fluids or soft sediments prevents persistent anchoring to rock.
How to Recognize It
- No “bottom” or clear contact scar where matrix once attached.
- Fully crystallized surfaces around the specimen; even healed areas show crystalline texture (stepped, frosted, or curved).
- Clusters may show intergrown faces but lack a matrix base.
Common Examples
- Quartz: Herkimer “diamonds” frequently occur as floaters; floater clusters are also known from alpine cavities.
- Fluorite: Matrix-free cubes or intergrown floater clusters, sometimes with re-healed faces.
- Calcite, Barite, Apatite: Pocket-grown clusters with 360° crystallization.
Collector Notes
- Value factors: Collectors prize complete 360-degree crystallization with minimal contact marks, crisp edges, lively luster, good clarity and color, and an overall balanced, aesthetic composition in clusters.
- Labeling: Use “floater” when there is no evidence of matrix attachment; add “double terminated” only if a single crystal shows two natural terminations.
- Display: Floating stands or custom cradles present 360° crystallization without hiding faces.
Related Terms
- Double terminated: Feature of a single crystal (two natural tips). A floater can be double terminated, but floater clusters need not be.
- Cluster: Multiple intergrown crystals; may be on matrix or matrix-free (floater).
- Healed/Regrowth: Textures indicating re-crystallization after breakage - common on floaters.
- Matrix: Host rock. By definition, floaters show no matrix attachment.
- Scepter, Gwindel, Elestial: Different growth habits that can appear on matrix or floaters but are not synonyms.