Expertise in Diamond Manufacturing to Service:

• Over 35 years of experience in the industry, operated by third-generation diamondaires
• Specializing in diamond manufacturing for sizes ranging from 0.7MM to 1 carat
• Accurate servicing of diamonds to meet your specific requirements
• Meticulously sorted inventory by size, ensuring precision within a 0.1mm tolerance

Uncompromising Quality:

• Adherence to strict Gemological Institute of America (GIA) standards for diamond grading
• Meticulous grading process for each diamond to ensure exceptional quality
• Commitment to providing diamonds with excellent clarity, color, cut, polish, and symmetry

Extensive Diamond Range:

• Diverse selection of diamonds to suit various customer preferences
• Clarity grades from VVS to I
• Color grades from D to K

Trusted Partner:

• Longstanding reputation as a reliable supplier of high-quality diamonds
• Dedicated to customer satisfaction and building lasting relationships
• Trusted by jewelers worldwide for sourcing exquisite diamonds

Choose Leo Shine for your diamond needs and experience the unmatched quality and service that sets us apart. Contact us today to discuss how we can assist you in creating exceptional jewelry pieces with our exquisite diamonds.

Diamond Origin:
At Leo Shine, we prioritize transparency and ethical sourcing when it comes to our diamonds. We procure rough diamonds from credible miners, such as Alrosa and affiliates of De Beers, while strictly adhering to the Kimberly Process.

The Kimberly Process and Ethical Practices:
The Kimberly Process is an international certification scheme established to prevent the trade of conflict diamonds. It ensures that diamonds are sourced from areas that are free from conflict and unethical practices. As responsible diamond manufacturers, we procure rough diamonds in accordance with the Kimberly Process guidelines.

Commitment to Ethical Sourcing:
At Leo Shine, we are dedicated to conducting our business with the highest ethical standards. By sourcing diamonds through the Kimberly Process and employing rigorous testing methods, we ensure that our customers can have confidence in the ethical origin and authenticity of our diamonds.

Choose Leo Shine for ethically sourced and meticulously tested diamonds. Our commitment to quality, transparency, and ethical practices sets us apart as a trusted provider of exceptional diamonds. Contact us today to explore our diamond collection and experience the difference firsthand.

Quality Control:
At Leo Shine, we prioritize stringent quality control measures to ensure that our diamonds meet the highest standards of excellence. From the initial stages of manufacturing to the final product, our commitment to quality is unwavering.

Testing at Every Process:
Throughout the entire supply chain, our inventory undergoes thorough testing at each stage. We have implemented comprehensive testing protocols to maintain the integrity of our diamonds. This includes using advanced D-Secure Machines to detect any CVD/HPHT treatments in our polished diamonds, ensuring that only natural and untreated diamonds are offered to our customers.

Reliable Detection Tools:
To enhance our quality control processes, we have a portable Swiss Geometrics Pen CVD detector in our New York office. This state-of-the-art device provides accurate and reliable detection results, allowing us to maintain the authenticity and quality of our diamond inventory.

Stringent Tracking and Management Practices:
In addition to testing, we employ stringent tracking and management practices. Our inventory is carefully monitored at every step, ensuring precise control and traceability. This allows us to have a comprehensive view of the entire supply chain and maintain strict quality control throughout the process.

Commitment to Excellence:
At Leo Shine, our dedication to quality control is rooted in our commitment to delivering exceptional diamonds to our customers. Our rigorous testing procedures, reliable detection tools, and stringent tracking and management practices ensure that each diamond in our inventory meets the highest standards of excellence.

Choose Leo Shine for diamonds that have undergone meticulous quality control processes. Our commitment to excellence ensures that every diamond we offer is of exceptional quality and authenticity. Contact us today to explore our diamond collection and experience our unwavering commitment to quality firsthand.