Psychic Stone Newsletter: Included Crystals, Quartz & Agates
Would you want a gemstones containing inclusions? As a rule, the more inclusions in a gem has, the lower its value. This is especially true if inclusions discolor the mineral, degrade its transparency, or make it more likely to fracture. Interestingly enough, there are a surprising amount of gemstones whose value is enhanced by the presence of inclusions - which either identifies its species or origin, or gives it certain optical or color characteristics. A good example is the included Demantoid Garnet whose "horsetail" inclusions verify valuable Russian origin. Another example is the Sunstone whose reflective platelets give the mineral its sparkle. Other great examples of included minerals becoming more valuable due to the inclusions are the Baltic Amber with trapped insects or plant parts, and Star Sapphires, which depend on rutile needles for creation of the star phenomenon. Development Phenomena: Development phenomena, such as the different inclusions, start and stops during crystal formation. A good example of the development phenomena is the "Phantom Crystals," which show the outline of a host crystal face with the deposited material of a different color or transparency within. The included Sun markings in diamonds, are another example. Too, what are known as "negative crystals," which are voids bounded by the growing host crystal walls, such as Enhydro stones, are another example. Enhydros are where a bubble of gas is trapped within a pocket of liquid inside the crystal. If you tilt an enhydro stone the bubble freely moves within its chamber. Rutile Quartz: The most common inclusion in quartz is rutile. The needle- and hair-like crystals can be thick or thin, pale gold to rich orangey brown in color and arranged in thick or sparse patterns. The most magnificent included mineral for collectors is the rutile & hematite starburst. In the stone shown here, the shiny black hematite crystal serves as an alignment point for the rutiles which line up in parallel bundles along each face forming a six rayed star with a hematite center. Pieces such as these are sought after and highly valued.