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- Company details
COKI is an Italian material-led design practice founded by architect and designer Coki Barbieri.
The studio develops sculptural objects and functional pieces using a proprietary natural composite stone made from Italian mineral aggregates and botanical pigments, entirely cement-free and resin-free. Each work is handcrafted in Italy through slow processes inspired by ancient Roman and medieval stone techniques, combined with contemporary material research.
COKI’s collections include sculptural vases, lamps, and objects designed for contemporary interiors, positioned at the intersection of design, craft, and material innovation. The practice is recognised internationally for its sustainable approach and refined material language.
Year of establishment:
2018
Number of employees:
UP TO 2 EMPLOYEES
Annual turnover:
Under 250.000 Euro
Reference year of turnover:
2019
Export turnover:
Less than 75.000 Euro
Activities:
Glass blowing
Manufacture of statuary, bas- and haut-reliefs, vases, flowerpots
Shaping and finishing of stone and marble
Industrial product and fashion design activities
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Company:
CARLOTTA BARBIERI
Web site:
Address:
VIA CONSOLARE, 148
City:
RIMINI (RN)
Zip Code:
47924
E-commerce:
Social media:
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COCHLEA DELLO SVILUPPO Vase — Giallo Siena
Cochlea dello Sviluppo is one of the foundational designs within the Cochlea Collection, inspired by the gentle movement of a land snail. The vase expresses a phase of growth and structural balance, where stability is achieved through two equivalent supports.
The piece is composed of three independent elements that rest together without adhesives or permanent fixings:
one hand-shaped borosilicate glass vessel
two mineral stone columns supporting the glass
The glass is flame-worked and curved entirely by hand, without molds.
The stone, gradually sculpted until a precise structural fit with the glass is achieved, draws inspiration from Roman mineral craftsmanship traditions and is developed through proprietary mineral-based processes, without cement or synthetic binders. Surface protection is achieved through layered natural oil treatments, manually applied and allowed to cure slowly over time. No synthetic sealants or industrial coatings are used.
Each piece is individually crafted. Variations in shape, surface, and proportion are an essential part of the work and reflect its fully handcrafted nature.
Dimensions
W 24 × D 8 × H 30 cm / W 9.4 × D 3.1 × H 11.8 in
Weight
2.5 kg / 5.5 lb
Components
Three separate elements. No permanent connection.
Materials
Proprietary natural composite stone, cement-free and resin-free, developed through mineral aggregation and mineral-based binding processes inspired by Roman and early artificial marble traditions.
Flame-worked borosilicate glass, shaped without molds.
Assembly
Dry structural interlocking, designed without adhesives or synthetic bonding agents.
Finish
Layered natural oil treatment, manually applied and slowly cured.
Production
Small-batch atelier production — Italy.
Care & Longevity
Designed for long-term material stability under normal domestic conditions.
Stone elements should be cleaned with a vacuum cleaner or a dry or slightly damp cloth.
Glass components can be removed and washed separately.
Availability
Small-batch production with limited annual output.
Made to order when not available.
Lead time: when not immediately available, made to order (4–6 weeks).
Architectural and site-specific commissions considered upon request.
COCHLEA DELLA METAMORFOSI N.2 & N.1 vases set — Giallo Siena
Cochlea della Metamorfosi Vases Set belongs to the Cochlea Collection, a series of sculptural vases inspired by the slow movement and evolutionary cycles of land snails. The set includes Metamorfosi n.1 and Metamorfosi n.2, two related forms exploring transformation through the relationship between mineral mass and curved glass.
Each vase is composed of three independent elements that rest together without adhesives or permanent fixings: one flame-worked borosilicate glass vessel bent into an L-shaped form, one mineral stone column supporting the glass, and one shaped mineral stone element receiving the glass form. In Metamorfosi n.1 this element is semi-circular; in Metamorfosi n.2 it becomes circular.
The stone is developed through proprietary mineral-based processes, without cement, resin, or synthetic binders. The glass is flame-worked and shaped entirely by hand, without molds. Each piece is individually crafted in Italy, with slight variations in surface, tone, and proportion that reflect its fully handcrafted nature.
Dimensions
Metamorfosi n.1: W 18.5 × D 15 × H 24 cm / W 7.3 × D 5.9 × H 9.4 in
Metamorfosi n.2: W 14 × D 15 × H 24 cm / W 5.5 × D 5.9 × H 9.4 in
Weight
1.4 kg / 3.1 lb each
Components
Three separate elements each. No permanent connection.
Materials
Proprietary natural composite stone, cement-free and resin-free, developed through mineral aggregation and mineral-based binding processes inspired by Roman and early artificial marble traditions.
Flame-worked borosilicate glass, shaped without molds.
Assembly
Dry structural interlocking, designed without adhesives or synthetic bonding agents.
Finish
Layered natural oil treatment, manually applied and slowly cured.
Production
Small-batch atelier production — Italy.
Care & Longevity
Designed for long-term material stability under normal domestic conditions.
Stone elements should be cleaned with a vacuum cleaner or a dry or slightly damp cloth.
Glass components can be removed and washed separately.
Availability
Small-batch production with limited annual output.
Made to order when not available.
Lead time: when not immediately available, made to order (4–6 weeks).
Architectural and site-specific commissions considered upon request.
CATHARSIS Bowl — Nero Vite
Catharsis Centerpiece Bowl belongs to the Catharsis Collection and explores transformation through fracture and recomposition of matter, drawing from the Latin meaning of catharsis as purification through release. The piece translates this tension into a low form, where containment and openness coexist within a grounded, sculptural presence.
The piece is composed of two independent elements that rest together without adhesives or permanent fixings:
one hand-shaped borosilicate glass vessel, flame-worked and appearing intentionally fractured
one sculpted mineral stone body forming the containing structure
The glass is flame-worked and shaped entirely by hand, without molds, and the stone is gradually sculpted until a precise structural fit with the glass is achieved.
The stone draws inspiration from Roman mineral craftsmanship traditions and is developed through proprietary mineral-based processes, without cement or synthetic binders. Unlike subtractive carving approaches, the form is first generated through a controlled, continuous formation of material, requiring precision and timing before any refinement takes place.
Surface intervention remains minimal: the stone is only slightly sculpted, allowing the original material tension to remain visible. Surface protection is achieved through layered natural oil treatments, manually applied and allowed to cure slowly over time. No synthetic sealants or industrial coatings are used.
Over time, the oil may continue to be absorbed by the mineral body, allowing the surface tone to become slightly lighter while maintaining structural integrity.
The bowl can function as a centerpiece or container for objects and natural elements, including floral compositions.
Each piece is individually crafted. Variations in shape, surface, and proportion are an essential part of the work and reflect its fully handcrafted nature.
Dimensions
W 18 × D 18 × H 15 cm / W 7.1 × D 7.1 × H 5.9 in
Weight
1.0 kg / 2.2 lb
Components
Two separate elements. No permanent connection.
Materials
Proprietary natural composite stone, cement-free and resin-free, developed through mineral aggregation and mineral-based binding processes inspired by Roman and early artificial marble traditions.
Flame-worked borosilicate glass, shaped without molds.
Assembly
Dry structural interlocking, designed without adhesives or synthetic bonding agents.
Finish
Layered natural oil treatment, manually applied and slowly cured.
Production
Small-batch atelier production — Italy.
Care & Longevity
Designed for long-term material stability under normal domestic conditions.
Stone elements should be cleaned with a vacuum cleaner or a dry or slightly damp cloth.
Glass components can be removed and washed separately.
Avoid aggressive solvents.
Availability
Small-batch production with limited annual output.
Made to order when not available.
Lead time: when not immediately available, made to order (3–4 weeks).
Architectural and site-specific commissions considered upon request.
CATHARSIS Vase Tall — Corallium
This tall version of Catharsis Vase belongs to the Catharsis Collection and explores transformation through fracture and recomposition of matter, drawing from the Latin meaning of catharsis as purification through release. The vase expresses a moment where tension is not resolved but held, allowing form to emerge through erosion and control.
The piece is composed of two independent elements that rest together without adhesives or permanent fixings:
one hand-shaped borosilicate glass vessel, flame-worked and appearing intentionally fractured
one sculpted mineral stone base supporting the glass
The glass is flame-worked and shaped entirely by hand, without molds, and the stone is gradually sculpted until a precise structural fit with the glass is achieved.
The stone draws inspiration from Roman mineral craftsmanship traditions and is developed through proprietary mineral-based processes, without cement or synthetic binders. Unlike subtractive carving approaches, the form is first generated through a controlled, continuous formation of material, requiring precision and timing before any refinement takes place.
Surface intervention remains minimal: the stone is only slightly sculpted, allowing the original material tension to remain visible. Surface protection is achieved through layered natural oil treatments, manually applied and allowed to cure slowly over time. No synthetic sealants or industrial coatings are used.
Over time, the oil may continue to be absorbed by the mineral body, allowing the surface tone to become slightly lighter while maintaining structural integrity.
Each piece is individually crafted. Variations in shape, surface, and proportion are an essential part of the work and reflect its fully handcrafted nature.
Dimensions
W 17 × D 14 × H 35 cm / W 6.7 × D 5.5 × H 13.8 in
Weight
1.3 kg / 2.8 lb
Components
Two separate elements. No permanent connection.
Materials
Proprietary natural composite stone, cement-free and resin-free, developed through mineral aggregation and mineral-based binding processes inspired by Roman and early artificial marble traditions.
Flame-worked borosilicate glass, shaped without molds.
Assembly
Dry structural interlocking, designed without adhesives or synthetic bonding agents.
Finish
Layered natural oil treatment, manually applied and slowly cured.
Production
Small-batch atelier production — Italy.
Care & Longevity
Designed for long-term material stability under normal domestic conditions.
Stone elements should be cleaned with a vacuum cleaner or a dry or slightly damp cloth.
Glass components can be removed and washed separately.
Availability
Small-batch production with limited annual output.
Made to order when not available.
Lead time: when not immediately available, made to order (4-6 weeks).
Architectural and site-specific commissions considered upon request.
Catharsis vide poche - Nero Vite
Catharsis Vide Poche belongs to the Catharsis Collection and explores transformation through fracture and recomposition of matter, drawing from the Latin meaning of catharsis as purification through release. In this form, the process is concentrated into a horizontal, contained gesture, where the material defines both structure and void.
The piece is composed of two independent elements that rest together without adhesives or permanent fixings:
one ultra-clear flat glass insert (5 mm), forming a removable internal surface
one sculpted mineral stone body, generated to contain and frame the glass
The glass insert is cut from ultra-clear flat glass, maintaining a precise, controlled surface in contrast with the irregular mineral body. It can be easily removed to allow maintenance and cleaning of the internal surface.
The stone, gradually shaped until a precise structural fit with the glass is achieved, is first generated through a controlled, continuous formation of material. During this phase, the perimeter is defined while leaving a central void, allowing the mineral mass to create a contained internal space rather than a solid volume.
The stone draws inspiration from Roman mineral craftsmanship traditions and is developed through proprietary mineral-based processes, without cement or synthetic binders. Unlike subtractive carving approaches, the form is first generated through a controlled, continuous formation of material, requiring precision and timing before any refinement takes place.
Surface intervention remains minimal: the stone is only slightly sculpted, allowing the original material tension to remain visible. Surface protection is achieved through layered natural oil treatments, manually applied and allowed to cure slowly over time. No synthetic sealants or industrial coatings are used.
Over time, the oil may continue to be absorbed by the mineral body, allowing the surface tone to become slightly lighter while maintaining structural integrity.
Each piece is individually crafted. Variations in shape, surface, and proportion are an essential part of the work and reflect its fully handcrafted nature.
Dimensions
Ø 22 cm × H 5 cm / Ø 8.7 in × H 2.0 in
Weight
1.3 kg / 2.8 lb
Components
Two separate elements. No permanent connection.
Materials
Proprietary natural composite stone, cement-free and resin-free, developed through mineral aggregation and mineral-based binding processes inspired by Roman and early artificial marble traditions.
Ultra-clear flat glass.
Assembly
Dry structural interlocking, designed without adhesives or synthetic bonding agents.
Finish
Layered natural oil treatment, manually applied and slowly cured.
Production
Small-batch atelier production — Italy.
Care & Longevity
Designed for long-term material stability under normal domestic conditions.
Stone elements should be cleaned with a vacuum cleaner or a dry or slightly damp cloth.
Glass insert can be removed and cleaned separately.
Availability
Small-batch production with limited annual output.
Made to order when not available.
Lead time: when not immediately available, made to order (4–6 weeks).
Architectural and site-specific commissions considered upon request.