Import Black Spinel Coin Faceted Beads For Jewelry — Buy in wholesale FOB from Supplier in India

Black Spinel Coin Faceted Beads from Earth Stone Inc. are semi-precious gemstone components cut in a flattened disc profile with mechanical faceting to enhance light return. The supplier specifies bead dimensions of 4mm to 5mm, strung in approximately 15-inch strands, a standard presentation for jewellery manufacturing supply. Earth Stone Inc. states the material as 'Natural or Synthetic Black Spinel', indicating that buyers must confirm origin type with the supplier, as natural spinel (MgAl₂O₄) and synthetic analogues differ in value, durability, and disclosure requirements. The coin cut, also termed lentil or disc, presents broad flat faces with triangular or checkerboard faceting on the periphery, yielding scintillation distinct from round bead or cabochon forms.

Natural black spinel derives its colour from iron and chromium substitutions in the octahedral crystal structure, achieving a refractive index of 1.718 and specific gravity of 3.60-3.90. Synthetic spinel, produced by flame fusion or flux growth, matches these optical constants but may show curved striae or flux inclusions under magnification. The 4-5mm size fraction is typical for bracelet, earring, and necklace strand construction, with approximately 75-90 beads per 15-inch strand depending on drill hole diameter and finishing. Earth Stone Inc. does not specify treatment status; natural black spinel is typically untreated, but confirmation of no heating, irradiation, or surface coating is prudent for natural-origin claims. Durability is excellent for both natural and synthetic varieties, with Mohs hardness 8 and no cleavage, making spinel suitable for daily-wear jewellery.

Primary buyers include fine jewellery manufacturers, bead retailers, and artisan designers seeking an onyx or jet alternative with superior hardness and refractive performance. The black colourway supports both monochrome contemporary designs and contrast settings with metal, pearl, or coloured gemstone. Earth Stone Inc., based in Jaipur's Johari Bazar, sources from or cuts within India's established gemstone processing centre. Import buyers should confirm with Earth Stone Inc.: whether material is natural or synthetic, any treatment disclosure, exact dimensional tolerance (±0.2mm or ±0.5mm), drill hole diameter, and finishing quality (chips, symmetry, polish). Payment terms, minimum order quantity, and certificate of origin for India's gemstone export regime require direct supplier clarification.

Earth Stone Inc. is located at 4828 Sotian Street, Johari Bazar, Jaipur 302003, Rajasthan, India. Johari Bazar is one of South Asia's principal gemstone and jewellery trading centres, with concentration of cutting workshops, rough dealers, and export merchants. The company holds a harbour trust tier. The response rate shows 0.00% with zero average response hours, suggesting limited or unmonitored inquiry handling at time of listing. No information is provided about year of establishment, facility ownership (cutting workshop versus trading house), employee count, or annual export volume.

The supplier profile does not mention specific certifications such as ISO, Responsible Jewellery Council membership, or gemstone treatment disclosure compliance. No client references, trade show participation, or e-commerce presence is indicated. Jaipur's gemstone sector includes both direct manufacturers and commission-based traders; Earth Stone Inc.'s position in this supply chain is unstated. Buyers should request: business registration, GST identification, export licence (if applicable), and clarity on whether cutting is in-house or outsourced. Direct communication to confirm active trading status is essential given the zero response metric.