Here is a survey of different ways in which quartz crystals may attach to each other.
Abundance. One large crystal with individual smaller crystals clustered at/around its base or sprinkled along one or more of its sides. Helps you become more comfortable with your own personal beliefs about abundance.
Barnacle Crystal. Many small crystals covering or partially covering a larger crystal. Helps with community/family issues, provides cohesive group energy, comforting after loss of love.
Bridge (Inner Child Crystal, Penetrator). Grows out of a nother, larger crystal. Bridges gaps, brings things together. Helpful on personal level and to communicate new ideas to group, public.
Companion. Two crystals entwined & partly growing in each other, or small crystal growing our of the main crystal; nurturing, supportive during difficult times, helps recognize how one partner can healthily support the other.
Cross. One crystal at right angles to another. Removes energy implants, facilitates spiritual studies
Dolphin. One large crystal with a much smaller, shorter crystal fastened securing to its side. Helps you know you are cherished by the universe. Excellent to cure insecurity, for babies, to connect to water spirits, for dreamwork.
Druzy Quartz. A surface dusted with very small micro-fine crystals. For soft, gentle exploration of self or any topic, tones down excessive yang energy.
ET Crystal (Extra-terrestrial). One point or termination on one end and several or many terminations on the other. The entrepreneur’s stone: good for helping unite many energies into one focus, and for splitting one energy into many paths. Helpful to connect to the many life forms of the universe emanating from the one source.
Inner Child. One or more crystal partially embedded in another crystal, as a parent cradling a child. Excellent for anyone “growing” something new, as in a business, child, etc. Protects, nurtures, helps you contact your own inner child.
Library. Crystal with newer flat, stubby crystals plastered on outside surface, contains information of general nature.
Manifestation (Creator). Larger crystal with a small, completely formed crystal totally inside it. For visualizing anything you want to bring in/manifest in your life. For fertility of any sort.
Muse. Cluster of nine crystal of similar size and length, connecting to the nine muses and creative energies.
Record Keeper. Crystals with a geometric symbol (often, not always, a triangle) naturally etched on its sides. Often not visible without looking for them. Often appearing and disappearing as you need them. Contain stored information accessible only by those who are at the same energy frequency as the information. Only these people can access & interpret the information. Very personal crystals. Conveys information which may be practical, not spiritual.
Record Keeper (Etched). Looks as though hieroglyphs have been etched on the sides, connecting to ancient and galactic civilizations and to your own past lives, for healing.
Soulmate. Two crystal of equal length growing side by side. Represents anyone with whom you have a deep connection, not necessarily pleasant. Also to unite different aspects of your own self.
Spiral Quartz. Distinct twist down its axis. Help maintain balance, draw universal energy into body, useful in kundalini.
Spirit Guardian. Two double terminated crystals of equal size growing side by side. Helps you remember you are never alone and always protected.
Spirit Quartz (Nodule). Drusy growing over a nodule of quartz; represents spirit affecting matter.
Tantric Twin. Crystals who share a common base but with two separate and distinct terminations, not necessarily of same size. Helps you with human relationships of all kinds & to allow and strengthen the presence of your soul mate in your life.
Trigger. A crystal of any type with a smaller crystal on one of its sides near the base. When pressed, the smaller crystal trigger fires a focused burst of energy through the termination. Often used in healing modalities.
Twin Flame. Two crystals of similar but not equal length/size, joined either at their base in a V shape or at their sides. Helps you attract people whose spiritual evolvement is compatible with yours…on a platonic rather than romantic level.
X Crystal. Two crystals naturally grown together, helps you balance and dynamically act on various options. Yang energy.
Y Crystal. Two crystals naturally grown together. Good telepathic communication tools. Symbolizes the right and left hand paths, and crossroads. Yin energy.