Tenoris about background
About Us

Tenoris is a data analytics company supplying jewelry retail and consumer trend data to the diamond & jewelry industries and the financial sector. 

Tenoris: (Latin) Noun.
tenor (genitive tenōris) (masc.)
A trend, a holding on, continuance, course, duration

How we do it

Tenoris focuses on all aspects of jewelry and gemstone retail activity, with an emphasis on diamonds.

Tenoris collects jewelry and gem sales and purchases activity from 2,500 US specialty jewelry retail doors. The retailer panel is a representative sample of the US jewelry landscape by size, volume, and geographic location.

The collected data is at an individual transaction level, capturing comprehensive details about each item, including timing, description, and pricing, along with complete item characteristics.

The data is cleaned and standardized without any manipulation or use of AI.

Clients can access the aggregated data through online reports tailored to their specific needs, allowing for cross-referencing of every data point with others.

In 2024, Tenoris tracked more than 3.9 million retail transactions with a total value of nearly $4.6 billion, which accounts for 10.5% of US specialty jewelers’ sales and 5.8% of the total US jewelry market.

Tenoris is the sole provider of granular and transparent US jewelry retail data. It has been effectively utilized by miners, manufacturers, retailers, and financial institutions to enhance their strategic decision-making and operational efficiency.

In 2024, Tenoris tracked more than 3.9 million retail transactions with a total value of nearly $4.6 billion. This represents 10.5% of US specialty jewelers sales and 5.8% of the total US jewelry market.

Edahn Golan - co-founder & co managing partner, Tenoris. About us image
Edahn Golan
Co-Managing Partner
Edahn is a diamond industry analyst. With over 20 years of experience, his diamond industry knowledge ranges from rough diamond prices to jewelry customer behavior. He specializes in a variety of industry-related themes, including how the diamond market works, its economics, and the impact of lab-grown diamonds on the business. He is the founder of Edahn Golan Diamond Research & Data, the leading diamond industry consultancy, a popular speaker and guest lecturer.
Tenoris.bi co-managing partner Chris Casey. About us image
Chris Casey
Co-Managing Partner
Chris is a 15-year veteran of the diamond and jewelry industry. Chris has extensive experience in market research as NPD’s founding MD of diamond and jewelry service. He developed a retail panel contributing transaction data to drive detailed sell-in and sell-through analytics. Prior to NPD, Chris was VP of Nielsen’s Jewelry Group heading National Jeweler and Europa Star magazines, as well as Couture and JA New York trade shows.
Dr Ilan Zisser - Head of Engineering, Tenoris. About us image
Ilan Zisser
Head of Engineering
Head of Engineering at Tenoris, Ilan has worked in the software industry for over 30 years. After receiving his PhD in pure mathematics from Tel Aviv University, he oversaw initiatives in cryptography, finance, data processing, and software development. Ilan was Tenoris’ first hire and has overseen all of its technology advancements thereafter.