Quartz Crystal (Sphatik Stone)

Natural Quartz Crystal, known historically as Sphatik in Sanskrit, is a transparent macro-crystalline mineral variety of Silicon Dioxide (SiO₂):

• Crystalline Structure: Crystallizing in the trigonal crystal system with 32 point group symmetry, quartz naturally develops hexagonal prisms terminated by pyramidal rhombohedra. It is chemically pure silicon and oxygen, exhibiting exceptional optical transparency and natural piezoelectric properties (generating an electrical charge under mechanical pressure).
• Optical Characteristics: Rock crystal quartz exhibits a refractive index of 1.544 to 1.553 with a double refraction (birefringence) of +0.009, displaying a diagnostic “bullseye” optic axis interference figure under a gemological polariscope.
• Faceted Collection: Our in-stock collection consists of water-clear natural Indian quartz, expertly precision-cut into faceted Oval Mix and Round brilliant designs ranging from 4.40 to 5.70 carats. Read our in-depth Natural Crystal (Sphatik) Buying Guide to explore grading and identification benchmarks.

Because clear glass is widely manufactured as imitation “crystal”, gemologists use rigorous diagnostic physical tests to distinguish real Earth-mined quartz:

• Thermal Conductivity (Touch Test): Quartz has significantly higher thermal conductivity than amorphous glass. True natural quartz feels noticeably ice-cold upon initial touch and draws heat away from the skin immediately, whereas ordinary glass warms quickly.
• Microscopic Inclusions: Authentic natural quartz contains subtle microscopic natural inclusions, such as two-phase fluid inclusions (microscopic liquid and gas voids), ultra-fine healing fractures (“fingerprints”), or minute crystalline needles. Common glass imitations frequently reveal spherical gas bubbles, curved flow lines (striae), and rounded molded facet junctions.
• Polarizing Refraction: Under crossed polarizing filters (polariscope), natural crystalline quartz blinks between dark and light four times per 360-degree rotation (anisotropic), whereas glass remains completely dark or displays anomalous patchy strain patterns (isotropic).
• The Ratna Gems Guarantee: Every Sphatik gemstone in our catalog is guaranteed 100% natural, unheated, Earth-mined quartz, backed by accredited gemological laboratory certification.

Every Quartz Crystal (Sphatik) sold by Ratna Gems is individually tested and accompanied by an independent accredited gemological laboratory testing report. The certificate identifies the mineral species as Natural Quartz, gemstone variety as Natural Rock Crystal (Sphatik), exact carat and ratti weight, dimensions, specific gravity (2.65), refractive index (1.544–1.553), hardness (7.0 on Mohs scale), confirms optical uniaxial positive character, and verifies untreated natural status. Each report includes a unique certificate number and verifiable QR code for direct verification on the issuing laboratory’s official portal.

Optional International Certification: Every gemstone includes an independent accredited laboratory certificate at no charge. If you specifically require an additional report from GII, IIGJ, or IGI, you can select it directly from the certification dropdown on any product page upon request (official laboratory testing fees apply in advance on a non-refundable basis).

With a Mohs hardness of 7.0 and high chemical stability, Quartz Crystal (Sphatik) is remarkably durable for daily jewelry wear:

• Resistance to Scratches: Ranked at 7.0 on the Mohs scale, quartz is harder than airborne dust and silica particles, preventing the micro-scratches that degrade softer gems over time. It has no distinct cleavage, exhibiting a tough conchoidal fracture.
• Jewelry Versatility: Faceted Sphatik stones are resilient enough for prong, channel, and bezel settings in daily rings, bracelets, and pendants.
• Safe Cleaning: Wash safely with warm water, mild soap, and a soft-bristled brush. Sphatik is impervious to common household liquids. Ultrasonic cleaners may be safely used on eye-clean, un-fractured stones, but avoid exposing any gemstone to rapid, extreme thermal shocks (such as boiling water directly onto cold crystal). Store alongside other jewelry in a compartmentalized pouch.

For customers observing classical Indian and Vedic traditions, historical literature outlines the following customary conventions:

• Customary Metals: Sterling Silver (925 Silver), White Gold, or Platinum are traditionally preferred to emphasize the cool, water-clear clarity of Sphatik.
• Traditional Placement: Customarily worn on the middle finger (Madhyama) or little finger (Kanishtha) of the working hand, or as a faceted pendant resting near the throat or heart center.
• Traditional Timing: Customarily set or worn on Friday mornings during Shukla Paksha (waxing moon) during sunrise.
• Traditional Role (Upratna): Historically documented in Sanskrit texts as Sitopala or Sphatika, revered as the classical substitute (Upratna) for Natural Diamond (Heera) or White Sapphire (Safed Pukhraj) representing Venus (Shukra), and traditionally crafted into sacred malas and iconography.

Please Note: Ratna Gems shares these details solely for cultural and informational awareness for customers seeking traditional jewelry. We sell all gemstones strictly on the basis of verified physical authenticity, mineral quality, and certified origin, and make no astrological, metaphysical, or medical claims.