Gilles Martin is chief executive officer of publicly traded Eurofins Scientific Group SE, a French laboratory services provider that moved its headquarters to Luxembourg in 2012. The Martin family controls 43 percent of the company’s shares through Analytical Bioventures SCA, a family investment vehicle.

Martin holds 67.5 percent of that entity, according to Orbis, a database of company information published by Bureau van Dijk, valuing his stake in the company at $1.1 billion. He founded Eurofins in 1987, in his hometown of Nantes, France, as a way to market a technology created by his parents that helped ascertain the sugar content of wine.

Laboratory Testing

The company has 14,000 employees and 180 laboratories, according to its website, and had sales of 1 billion euros ($1.3 billion) in 2012, up 65 percent in five years. It has expanded to include testing and support services for the pharmaceutical, food, environmental and consumer-products industries.

Sylvain Besson, a spokesman for Eurofins, said Martin was traveling and not available for comment, and declined to discuss the family’s personal details. The billionaire’s brother, Yves- Loic, controls about 30 percent of the family business and their sister, Valerie Anne Marie Hanote-Martin controls 1.7 percent. All three siblings serve on the company’s board of directors, and Gilles is chairman.

The brothers were listed on the Challenges Magazine ranking of the richest people in France with a combined fortune of $1.3 billion in July 2013.

Crystal Fortune

Giori-Swarovski, the sister of Gernot Langes-Swarovski, the largest shareholder of Austria-based D. Swarovski KG, the world’s top producer of cut crystal, controls 13 percent of the company, according to Orbis. She owns her stake through Marina Giori Beteiligungs und Verwaltungs GmbH, an Innsbruck, Austria- based holding company.

Swarovski had revenue of 3.1 billion euros in 2012, and is valued at $9 billion, according to data compiled Bloomberg, based on the average enterprise value-to-sales, enterprise value-to-Ebitda, and price-to-earnings multiples of two publicly traded peers: Pandora A/S and Folli Follie SA.

The company’s press office didn’t respond to an e-mail requesting comment on Giori-Swarovski’s net worth.