Alexander Streeb

Alexander Streeb is responsible for the professional standards, processes and quality assurance of the German Gemstone House.His approach: substance, transparency, traceability.

He is considered one of the most experienced experts in the field of investment-grade colored gemstones. He succeeds in creating clarity and trust in a market that is rarely institutionally regulated worldwide.

He was a co-founder of the asset management company German Capital Management AG, which manages approximately €300 million in assets. After more than 35 years of experience in the financial services industry, Alexander Streeb stepped down from his position on the board in 2018 to pursue his passion: the targeted establishment of colored gemstones as an institutionally approved asset.

Alexander Streeb regularly participates in lectures, interviews and webinar formats.

His analyses of market mechanisms, evaluation structures and certification procedures are documented in the institution's media library.

Oliver Kleimaier

Oliver Kleimaier is responsible for the commercial and operational management of the house.

He brings many years of experience in asset management and corporate structuring.

His focus is on managing financial and compliance processes, digitizing audit procedures, and overseeing partnership structures between laboratories, experts, and sales units.

He stands for commercial precision, procedural clarity, and the ambition to design the audit chain as a documented performance of trust.

In the media library, Oliver Kleimaier explains the economic basics of the gemstone market and contextualizes the development of supply, demand and price formation.