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Through a marriage of traditional craftsmanship and the latest developments in jewelry manufacturing technology, Oscar Winter creates jewels that are not only unique in design, but are on the cutting edge of jewelry manufacturing techniques. The Oscar Winter maker's mark represents our commitment to elevated standards of craftsmanship and materials fine jewelry that will last for generations to come.


When you purchase an Oscar Winter engagement ring, you know that your keystone diamond will be accompanied by a grading certificate from the Gemological Institute of America, the leading international authority in diamond grading. This ensures the authenticity of your purchase and details important factors such as carat weight, color, clarity and cut grades that influence the value of your investment.


Oscar Winter also adheres to elevated standards in diamond selection so you know you're purchasing the highest quality jewel possible. You will only find diamonds graded Colorless to Near Colorless in color, Flawless to Slightly Included in clarity and Excellent in cut for round brilliant diamonds.


Our stringent sourcing guidelines ensure your Oscar Winter jewelry contains metals that are nickel safe and conflict free, as all precious metals used are exclusively sourced from refineries compliant with the World Gold Council Conflict Gold Policies, LBMA Responsible Gold Guidance, and the OECD Due Diligence Guidance on Responsible Supply Chains.