Diamond Helix — Custom Spiral Crystal Chandelier for Lobby Bar

What is the Diamond Helix and where is it specified?

At XHLWX (led-project-light.com), a Custom Indoor LED Lighting Manufacturer based in China, we specialise in creating architectural statement pieces that define a space. The Diamond Helix is a premier example of this philosophy, engineered as a fully customisable double-helix spiral crystal chandelier designed for the most ambitious hotel lobbies, atriums, grand staircases, and signature lobby bars. It is specified where design intent calls for a breathtaking focal point that combines classical luxury with modern lighting technology. Based on a standard reference dimension of Ø1500mm by H4000mm, every aspect from diameter to height and spiral pitch can be modified to suit the unique architectural volume of your project.

The fixture’s iconic form is achieved with mirror chrome rails, precision-formed by CNC machines to create a perfect, flowing double-helix. Suspended within this structure are hundreds of brilliant K9 crystal cubes, each refracting light from its dedicated source. The integration of addressable LED technology allows for dynamic, captivating effects, transforming the chandelier from a static object into a living sculpture of light. This piece is not merely a luminaire; it is a landmark feature designed to create an unforgettable first impression and elevate the guest experience in luxury hospitality environments across the European, US, and Middle Eastern markets.

Photometric and electrical specification

The Diamond Helix is a bespoke system where final specifications are tailored to each project's aesthetic and technical requirements. The table below outlines the typical performance parameters and available options for specifiers and contractors.

Parameter	Specification	Standard	Notes
Optics - CCT	2200K / 2700K / 3000K	As specified	Tunable White (2200-3000K) and RGBW options available.
Optics - CRI	Ra > 95, R9 > 80	CIE 13.3	Essential for rendering skin tones and rich materials accurately in hospitality settings.
Optics - TM-30	Rf > 90, Rg > 100	IES TM-30-18	Ensures high fidelity and gamut for superior colour rendition.
Optics - UGR	N/A (Decorative)	EN 12464-1	As a decorative statement piece, UGR is not a primary design metric.
Optics - Beam Angle	360° (per source)	Project-specific	The overall light distribution is simulated in DIALux based on the final design.
Electrical - Power	Project-specific (e.g., 3-7W per light point)	As per design	Total wattage is calculated based on the number of crystal elements and light sources.
Electrical - Efficacy	60-85 lm/W	As specified	Varies based on CCT, CRI, and selected LED source (e.g., G9, E14, COB).
Electrical - Driver	Tridonic, Mean Well, Osram	Project-specified	Compatible with TRIAC, 0-10V, DALI-2, and DMX control systems.
Light Source	Bridgelux, Samsung, Osram	L70 > 50,000 hrs	High-quality chips ensure long life and consistent colour over time.
Housing - IP Rating	IP20	IEC 60529	Designed for dry, indoor locations only.
Housing - Material	K9 crystal, CNC-formed steel rails, aluminium ceiling plate	-	Rails finished in mirror chrome; other finishes (gold, matte black) available.
Certification	CE, RoHS, ErP	EU Directives	UL / cUL certification is managed on a project-by-project basis for the US market.

Which spaces is it designed for?

The Diamond Helix is conceived for large-volume, high-impact spaces where it can serve as a gravitational centre for the interior design scheme. Its primary applications are within the luxury hospitality and high-end commercial sectors.

How does the chandelier enhance a luxury hotel lobby or atrium?

In a double-height hotel lobby or atrium, the Diamond Helix leverages vertical space to create a dramatic and unforgettable sense of arrival. Its spiralling form draws the eye upwards, accentuating the scale of the architecture. During the day, its K9 crystals capture and refract ambient light, while at night, the addressable LEDs can be programmed to create gentle, cascading light effects that add dynamism and sophistication. It functions as both a light source and a significant piece of kinetic art, setting a tone of modern luxury from the moment a guest enters.

Can it be specified for a high-end restaurant or cocktail bar?

Absolutely. In a restaurant or bar setting, the Diamond Helix can be scaled down to create a more intimate yet equally impressive feature. Using warm CCT options like 2200K or 2700K with high CRI (Ra > 95) ensures a comfortable, flattering ambiance where food, drinks, and patrons look their best. With DMX or DALI-2 control, the lighting can transition seamlessly from a bright, welcoming daytime scene to a dramatic, low-lit evening mood, with the ability to program dynamic 'sparkle' effects for a vibrant cocktail hour atmosphere.

What are the considerations for installing it over a staircase or in a void?

The primary consideration for a staircase or multi-floor void installation is structural. The weight of the fixture, which can range from 150 kg to over 500 kg depending on its final dimensions and material density, requires significant reinforcement in the ceiling structure. Our service includes providing detailed structural drawings and weight calculations to be coordinated with the project's structural engineer. We also plan for safe access for installation and future maintenance, ensuring every logistical aspect is addressed before manufacturing begins.

Installation, control and compliance (DALI-2 / Casambi / 0-10V, CE / RoHS / ErP)

We engineer the Diamond Helix for seamless integration into modern smart building ecosystems. Control is paramount for a dynamic fixture of this nature. We provide drivers and interfaces for all major protocols, including:

• DMX512: For granular, addressable control of each crystal point, enabling complex scenes and dynamic effects.
• DALI-2: For integration into sophisticated, DALI-based building management systems, offering dimming, scene recall, and system diagnostics.
• 0-10V & TRIAC Dimming: For simpler projects requiring smooth, flicker-free dimming down to 1%.
• Wireless Control: Compatibility with systems like Casambi can be engineered for retrofit projects or where new control wiring is not feasible.

Compliance is guaranteed for your target market. All components are CE marked and RoHS compliant for the EU market, meeting ErP directives for energy efficiency. For projects in the United States and Canada, we manage the process of obtaining project-specific UL or cUL listing to ensure full compliance with local electrical codes. Our engineering team provides comprehensive installation manuals, wiring diagrams, and optional on-site supervision to support the local contractor's installation team.

Customisation, MOQ and lead time

The Diamond Helix is, by definition, a custom product. Each chandelier is built to order, allowing for complete design freedom. Our process is collaborative and transparent, beginning with your architectural plans or design concept.

1. Concept & Rendering: We develop a concept sketch and 3D photorealistic renderings to visualise the fixture in your space.
2. Simulation & Engineering: We use DIALux evo to simulate the lighting effect and provide photometric data. Simultaneously, our engineers produce detailed structural and electrical drawings for approval.
3. Manufacturing: Upon approval, manufacturing begins.

Customisable elements include overall height and diameter, the pitch and number of spirals, the size and shape of the crystals, and the finish of the metalwork. The Minimum Order Quantity (MOQ) is one (1) set.

The lead time for a fully bespoke Diamond Helix project typically ranges from 45 to 90 days, depending on the complexity of the design, material sourcing, and the client approval process.

Frequently Asked Questions

Q: What is the typical weight and what ceiling support is needed?

A: A reference design of Ø1.5m x H4.0m weighs approximately 180-250 kg. We provide complete structural drawings specifying the load-bearing requirements. Typically, this involves a reinforced steel structure or concrete slab anchor points rated for at least 500 kg to ensure a minimum safety factor of 2x for static load.

Q: Can the individual LED light sources be replaced?

A: Yes, the fixture is designed for long-term serviceability. Depending on the specification, we use replaceable G9 or E14 base LED lamps. For integrated COB sources, we supply replacement modules. The entire system is rated for over 50,000 hours of operation and is backed by a comprehensive 5-year warranty covering all electronic components and drivers.

Q: How are the dynamic lighting effects controlled?

A: For full dynamic capability with addressable LEDs, we specify a DMX512 control system. This allows a lighting programmer to create intricate effects like cascading light, sparkles, and subtle colour shifts. For simpler dimming, we integrate with 0-10V or DALI-2 systems. We work with your controls integrator to ensure seamless operation within the building's overall lighting scheme.

Q: What is the process for developing a custom design from scratch?

A: Our bespoke process starts with your vision. Within 7-10 business days of receiving your brief, we provide 3D models and photorealistic renderings. Once the design is approved, we move to engineering drawings and photometric simulations. The entire process, from initial concept to delivery, typically takes between 45 and 90 days. The MOQ is just one set.

Request IES files and a quotation

Due to the bespoke nature of the Diamond Helix, standard IES and LDT photometric files are not applicable. Instead, we generate project-specific photometric reports and visualisations using DIALux based on your finalised design. This ensures the lighting simulation accurately reflects the performance of the unique fixture within your architectural model. To begin the design process or to discuss your project's specific requirements, please contact our engineering team. At XHLWX (led-project-light.com), a Custom Indoor LED Lighting Manufacturer based in China, we are ready to partner with you to bring your most ambitious lighting visions to life.