
| Kaleidoscope Category | Category Definition |
| Antique Kaleidoscope | A kaleidoscope over 80 years old, generally created by a known artist or scientist. |
| Antique Kaleidoscope Reproduction | Reproduction of an antique kaleidoscope or other kaleidoscopic optical instrument, faithful to period, construction in both interior and exterior |
| Artist Proofs | A prototype that is #0 of a limited edition, and is identical to an edition which is put into the market. For example, a prototype would be an artist’s proof if it was the final example and was exactly the same as #1 of that edition. Generally artists keep this piece, so often the Artist’s Proof is a highly prized item from the artist’s personal collection. |
| Contemporary Art Kaleidoscope | Expertly designed and executed limited editions of 25 or less, including absolutely unique one-of-a-kind works of kaleidoscopic art by artists in mixed media, glass, enamel, wood, or metal |
| Kaleidoscope Art | Art produced in another medium, such as glass, watercolor or oil painting or prints, quilts, mixed media art that might include a kaleidoscope, photographic prints using kaleidoscope lenses, and projected or video kaleidoscope units. |
| Kaleidoscope Books | Books about kaleidoscopes, kaleidoscope artists, patents, and kaleidoscope-related art. |
| Kaleidoscope components | Additional wheels, cells, and other components by artists whose work is featured |
| Kaleidoscope Software | CD of Kaleidoscope Software |
| Kaleidoscope Spectrum | Widely available kaleidoscopes of high quality, design and workmanship, but unlimited editions, in any media |
| Kaleidoscopes for Public Spaces | Large kaleidoscopes and kaleidoscopic sculptures or fountains that can safely be used in public spaces indoors or outdoors. Many of these items stand on the floor, pedestal, table and are welcomed in waiting rooms, hotel lobbies, restaurant waiting areas, offices, campuses, parks, and museums. Also includes commissioned kaleidoscope installations in or on walls, ceilings, and gardens. |
| Master Craft Kaleidoscopes | Kaleidoscopes created by craftspersons of exceptional ability, limited editions, not necessarily contemporary in their intent, may be exceptional reproductions of historical kaleidoscopes, and creations in which the craft in a particular medium, e.g. wood, is the pre-eminent feature of the kaleidoscope |
| Novelty Kalidoscopes | Kaleidoscopes in unusual formats or toy kaleidoscopes, any media |
| Prototype | A prototype is an experimental unit, which may never have resulted in a production or limited edition line of work. It may be an outstanding kaleidoscope or teleidoscope and would be judged on its own merits as a one-of-a-kind artwork. |
| Viewer | A non-kaleidoscope category of instrument which provides an optical viewer and object holder. May have only a magnifier or other optical aid. |
| Wearable Kaleidoscopes | A kaleidoscope that can be worn as adornment. Jewelry that incorporates a kaleidoscope, e.g. ring, pin, pendant, necklace. |
| Quality Rating | Quality Rating Definition |
| New | The kaleidoscope is new. It may have been purchased by a dealer or retained by the artist and stored in its original packaging. In pristine condition and has never been owned by a collector. |
| Mint | While the kaleidoscope is not new, it bears no evidence of use. All artists signatures and marks are pristine. No scars or other marks on the exterior. Mirror systems, stand or decorative elements, and object cells in like new condition and flawless. |
| Excellent | A highly collectible kaleidoscope which has slight evidence of wear in turning mechanism, decorative elements, or exterior. Object cells and mirror systems are in like-new condition. |
| Collectible |
The kaleidoscope is still collectible, but shows evidence of use. Evidence of wear on exterior and decorative elements. Artist marks are readable. Object cells and mirror systems in alignment and fully functional. |
| Enjoyable | A much-loved kaleidoscope that may show marks or scars on the exterior, slight optical flaws in mirror or lens, or may be missing a stand or decorative element. Still very enjoyable, but not likely to appreciate in value. |