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LEADING GEM & JEWELLERY MANUFACTURER

The connoisseur in precision-cut natural gemstones and diamonds for the luxury jewellery and watch industry.

CIEN’s expertise is built on long-term commitment and trust towards our clients and partners. Our unbridled appetite for excellency has made us what we are today: the leading gems and jewellery manufacturer from Thailand.

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.

HIGHLY SKILLED ARTISANS

Every piece of natural gemstone is processed by skilful craftspeople that have been trained and aware of excellency, the customers will be assured that gemstones are always crafted in a delicately controlled environment that involves precise shaping and polishing with the strictest criteria. 

HIGHLY SKILLED ARTISANS

Every piece of natural gemstone is processed by skilful craftspeople that have been trained and aware of excellency, the customers will be assured that gemstones are always crafted in a delicately controlled environment that involves precise shaping and polishing with the strictest criteria. 

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.

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

MASTERLY CRAFTSMANSHIP

CIEN creates advanced jewellery in the combination of sophisticated craftsmanship and intricate techniques that is unparalleled worldwide. Our master craftsmen made jewellery by the quintessence of exceptional craftsmanship and professionalism. This made us specialized in an invisible setting that embellishes all gemstones seamlessly in a framework piece. 

THOUGHTFUL GRADING & IDENTIFICATION

We aim to ensure the satisfaction of our customers on the highest level. All gemstone products of CIEN have been graded, controlled, and tested by experienced gemologists in the laboratory equipped with advanced instrumentation, including Raman, FTIR, EDXRF, etc.

OUR SUSTAINABILITY

We commit ourselves to sustainability in the management of business processes and a strong corporate social responsibility throughout our supply chains. CIEN strives to ensure that our business and partners will be complied with the best possible practices - sourcing of materials, human right, and environment.

As a member of the Responsible Jewellery Council registered in 2020, CIEN is proud to have achieved this important contribution. We have officially been certified against the Code of Practice in late-2021, and strongly determine to continue sustainable development across gem and jewellery industry.

CIEN is also a member of the United Nations Global Compact and quick to commit itself to upholding the ten sustainability principles set out in the UN Global Compact initiative, thus underlining its exemplary social and ecological credentials.

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CIEN Co., Ltd.
555, Soi Chokchaijongjamroen, Bang Phong Phang,
Yan Nawa, Bangkok, 10120, Thailand

© 2021 Cien. All Rights Reserved.

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