Our Expertise

Fine Jewelry Expertise

Efesto Group brings together cross-disciplinary expertise in the jewelry world: from scientific gemology to artisanal production, from court-certified appraisals to professional training. An integrated vision covering the entire Made in Italy jewelry value chain.

Areas of Expertise

Scientific Gemology

Scientific gemstone identification, geographic origin determination, treatment detection (heating, filling, diffusion), natural/synthetic differentiation. Classification per international standards: color, clarity, cut, carat weight.

Jewelry Design

From concept to finished product: art-historical research, mood boards, preparatory sketches, technical drawing, 3D CAD modeling, photorealistic rendering, rapid prototyping. Every design is unique with intellectual property guaranteed to the client.

Artisanal Production

Production in Milan's goldsmith district with traditional techniques: lost-wax casting, hand setting (prong, bezel, pave, channel, invisible), chasing, engraving, enameling, mirror polishing, rhodium plating. Quality control at every production stage.

Appraisals & Valuations

Gemological appraisals certified by the Tribunale di Milano for multiple purposes: replacement value for insurance, market value for sales, estate valuation for inheritance, expert witness in litigation, authentication and certification.

Professional Training

Over 1,100 courses delivered and 9,000 professionals trained since 2016. Programs in jewelry design, creative and production processes, technical optimization, goldsmith art history, luxury sales techniques. Collaborations with Accademia Virtuosi Pomellato, Istituto Marangoni, Associazione Orafa Lombarda.

Luxury Consulting

Strategic advisory for luxury and jewelry brands: market positioning, collection strategy, visual merchandising, retail optimization, supply chain management, international market entry. Personal shopping and concierge for VIP clients and 5-star hotels.

Credentials & Recognition

Court Expert: Tribunale di Milano

Laura Tomaselli is a CTU (Court-Appointed Technical Expert) at the Tribunale di Milano for gemological appraisals. Official trainer of court-appointed jewelry experts.

Heart of the Goldsmith District

Showroom and atelier on Via Giovanni Marradi, in the heart of Milan's goldsmith district. Curated network of excellence artisanal workshops for Made in Italy production.

9,000+ Professionals Trained

Since 2016, over 1,100 courses and 9,000 professionals trained in the jewelry industry. Collaborations with Italy's leading educational institutions.

Active Across 4 Continents

Over 180 corporate clients served. Partnerships with 12 five-star hotels in Milan. International clientele including brands like H.Stern, Picchiotti, Pomellato, and Pisa SC Store.

Jewelry Glossary

Essential terms from the world of fine jewelry and gemology

Gemological Appraisal: A certified professional evaluation of precious stones and jewelry. Includes species identification, origin determination, treatment detection, quality grading, and economic value estimation. In Italy, court appraisals carry legal weight in judicial proceedings.
Gemology: The science that studies precious stones: mineralogy, crystallography, optical and physical properties. A professional gemologist can identify, classify, and evaluate gems using specialized instruments (refractometer, spectroscope, gemological microscope).
Carat (ct): Unit of weight measurement for precious stones. One carat equals 0.2 grams. For precious metals (gold), carat indicates purity: 18-carat gold (18kt or 750) contains 75% pure gold.
Cut: The shape and proportions given to a rough stone by the cutter. Main cuts include: round brilliant, princess, oval, emerald, marquise, pear, cushion, radiant. Cut quality affects brilliance, fire, and scintillation.
Inclusion: An internal characteristic of a precious stone: crystals, fractures, fluids, or other materials trapped during formation. Inclusions determine the clarity grade and can help identify geographic origin and distinguish natural from synthetic stones.
Lost-Wax Casting: An ancient goldsmith production technique: a wax model is coated in refractory material, the wax is melted away, and molten precious metal is poured into the resulting mold. Enables creation of complex, detailed forms with high fidelity to the original design.
Stone Setting: The technique of fixing precious stones to the metal support. Main techniques include: prong setting, bezel setting, pave, channel setting, and invisible setting. Each technique offers different aesthetic and security advantages.
Hallmark (Punzone): A mark stamped on precious metals certifying their purity. In Italy, hallmarking is mandatory by law and includes: the star (symbol of the Republic), the manufacturer's identification number, and the metal fineness (e.g., 750 for 18kt gold).