Coral — Ancient red coral from the Mediterranean — Silver — Rock crystal — Diamonds — Agate. Measurements: 10 x 10 x 17 cm. Gemmas Oceanis Collection

Composite foam from the coastline — Recycled plastic — Turbo marmoratus shell — Turbo marmoratus shell — Tourmaline crystal (2.23 ct) — Tourmaline seeds — Rock crystal — black sand from New Caledonia — 88 black sapphires (44.9 ct) — Silver 69g — Silver 69g — Gold leaf — Bronze powder. Measurements: 37 x 22 x 27 cm. Gemmas Oceanis Collection

Obsidian — Wood — Composite foam — Silver 69 g — 88 black sapphires (48.2 cts). Measurements: 37 x 25 x 75 cm. Gemmas Oceanis Collection

Rock crystal — Kyanite — Composite shell covered with white sand from New Caledonia — 11.05 ct cabochon blue sapphire. Measurements: 13 x 10 x 28 cm. Gemmas Oceanis Collection

Malachite — Composite foam — Wood — Polystyrene — 88 sapphires (64.30 carats). Measurements: 22 x 18 x 73 cm. Gemmas Oceanis Collection

Quartz — Ancient shell — Composite foam — Rock crystal — Rock crystal — Composite plastic — Black sand from New Caledonia. Measurements: 23 x 23 x 30 cm. Gemmas Oceanis Collection

Polystyrene picked up at the seaside - Gold leaf placed or gold paint on silicone - Tahitian black pearl (15 ct) - Cyanite - 88 black sapphires (49 ct) - Silver 75g. Measurements: 30 x 15 x 33 cm. Gemmas Oceanis Collection

802 g of silver with an ebony effect — 40.8 g of 18K yellow gold — 0.2 ct of VVS diamond (the eyes) — Approximately 600 ct of black mother-of-pearl from Tahiti — 3.2 kg of leopard ebony from Gabon (ancient wood). Measurements: 40 x 20 x 34 cm