LEADING GEM & JEWELLERY MANUFACTURER

The connoisseur in precision-cut natural gemstones and diamonds for the luxury jewellery and watch industry.
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Our expertise at CIEN is built on a long-term commitment and trust towards our clients and partners. Our insatiable appetite has propelled us to become the leading gems and jewelry manufacturer from Thailand.
Cien Faceting Ruby
Faceted & Unfaceted Ruby

THOROUGHLY SELECTIVE MATERIAL

We sourced only high-quality raw materials covering a vast variety of coloured gemstones that were mined sustainably by world-leading producers from all around the world. Our roughs and processed inventory are homogeneous colour distribution that can achieve the topmost tier have been selected exclusively for effective provision.

THOROUGHLY SELECTIVE MATERIAL

Each and every piece of natural gemstone is processed by skillful craftspeople who have undergone rigorous training and are dedicated to excellence. Customers can rest assured that our gemstones are always crafted in a perfectly controlled environment, adhering to the highest standards of precision shaping and polishing.
Cien's Laser Engraving Machine

CONSISTENTLY MAINTAINED QUALITY

The mandate of CIEN is to undertake continuous development by the means of innovative styles. CIEN has the competitive edge in the flexibility of manufacturing, conformity of production, extremely low error rate, and enhanced standardization to maintain a higher level of industry standards in quality and creativity.

VIA STATE-OF-THE-ART EQUIPMENT

Our perfection is the consistency of the workmanship ensured by utilization of self-developed cutting-edge innovation for faceting, polishing, and high-precision adjustment, as well as our measurement technology that downs to microscopic scale to guarantee the highest precision standards of low tolerances, great uniformity, exact width and length, consistent shape, and symmetry of gemstones.
Cien's Gems Cut

BEYOND PERFECT CUT

To achieve any kind of ideal cuts, CIEN utilizes a groundbreaking digitization system to optimize the gemstones’ highest potential. Our stones are computerized and calibrated at every possible angle to suit all dimensions of jewellery settings and creations. We are renowned especially for:
  • Standard Cut
  • 3 Excellence
  • Heart & Arrow
  • Fancy Shape
  • Asymmetric Shape
  • High Precision Grooving
  • Special Customized Gem Piece
Cien Crafting Ruby Ring

CONSISTENTLY MAINTAINED QUALITY

The mandate of CIEN is to undertake continuous development by the means of innovative styles. CIEN has the competitive edge in the flexibility of manufacturing, conformity of production, extremely low error rate, and enhanced standardization to maintain a higher level of industry standards in quality and creativity.
Cien Ruby Inspection & Selection

VIA STATE-OF-THE-ART EQUIPMENT

Our perfection is the consistency of the workmanship ensured by utilization of self-developed cutting-edge innovation for faceting, polishing, and high-precision adjustment, as well as our measurement technology that downs to microscopic scale to guarantee the highest precision standards of low tolerances, great uniformity, exact width and length, consistent shape, and symmetry of gemstones.

CONSISTENTLY MAINTAINED QUALITY

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