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Blue Onyx changes how a space handles light. The stone is calcite-based and forms in layers, so thin parts let light pass and create a soft glow when backlit. Colors range from powder blue to blue-green, crossed by cream or amber bands. Polished faces show strong depth; honed or brushed finishes reduce glare. Because the material is acid-sensitive and softer than granite, it is best used indoors or in sheltered places. The sections below explain its structure, performance, available formats, suitable uses, pricing factors, processing path, care needs, and supply notes to support clear specification.
When coordination matters since schedules are tight, disciplined supply prevents surprises on projects. JAM Stone Co. manages Blue Onyx with step-by-step checks from block selection to crating. Thickness is calibrated, resin and mesh improve stability, and shade groups are kept consistent for clean installation. Packing includes foam sheets, corner guards, and moisture barriers to protect edges and polish. As a seasoned supplier of Blue Onyx, the company also plans lead times, reserves matching lots for book-matched sets, and supports drawings for special cuts so projects move forward with fewer delays.
Blue Onyx is a banded calcitic onyx composed mainly of calcium carbonate (CaCO₃). The layered structure creates two common looks: vein-cut slabs show straight, parallel ribbons, while cross-cut tiles display soft, cloudy fields. Translucency is a key feature, especially in thinner panels that sit in front of diffused lighting. Due to natural brittleness along some bands, slabs are often vacuum-resined and mesh-backed for stability. The stone accepts a high polish, yet also finishes well honed or brushed for low-glare surfaces. Indoor use is preferred, and exterior work should be limited to protected, mild conditions.
Blue Onyx is a calcareous stone with typical values similar to other calcitic onyxes. Bulk density usually falls near 2.60–2.75 g/cm³, with low open porosity and modest water absorption. Hardness is about Mohs 3, so scratching is possible if grit is not controlled. Strength depends on the direction of cut across the bands. Resin impregnation and fiberglass mesh are common to reduce fracture risk and improve handling. Proper calibration helps keep thickness even, which supports clean joints and safer book-matching during installation in reception desks, wall cladding, and other architectural elements.
Predominantly calcite, often over ninety percent, with minor aragonite and trace oxides that add blue and cream tones. The fine, layered fabric supports translucency, especially in thin sections. Small voids may occur along growth layers and are commonly stabilized with clear resin, then polished or honed for a uniform face.
Bulk density typically ranges from about 2.60 to 2.75 g/cm³. Open porosity is usually low, often ~0.2–1.0%, with water absorption commonly ~0.1–0.5% by weight. Values vary by lot, so selection should confirm targets when low stain uptake and even finish are required.
Hardness is near Mohs 3, which is softer than many construction stones. Compressive strength and flexural strength fall within usual marble-onyx ranges but depend on band orientation. Narrow pieces that cross through veins need conservative spans and extra support. Mesh backing helps resist edge stress during transport and installation.
Accurate calibration improves flatness and keeps thickness consistent across panels. Proper edge preparation limits micro-chipping on polished arrises. Where thicker looks are needed, laminated edges can be used with white adhesives. Always align veins between paired panels to share movement and reduce tension at glue lines.
Expect color shifts, tight seams, stylolites, or fine fissures at some band contacts. Quality selection aims for continuous color without sudden shocks that break a pattern when book-matchede. Resin is acceptable when stable and well finished. Reject open cracks that pass through thickness where long-term stability is doubtful.
Designers value Blue Onyx for its glow when backlit and for the clean order of vein-cut ribbons. Polished surfaces show depth and reflect light, while honed or brushed textures reduce glare and add comfort to touch. As a calcium-carbonate stone, it is sensitive to acids, so spills of lemon, vinegar, or wine can leave dull marks. Sealing reduces staining but does not stop etching. Freeze–thaw exposure is not recommended. For backlit assemblies, use diffusers and plan for heat management behind panels to protect both the stone and the lighting system during long operation hours.
Vein-cut pieces read as straight, parallel bands that suit linear designs. Cross-cut pieces display calm cloud patterns that soften large fields. Translucency allows feature walls, counters, and art panels to glow when paired with even, diffused lighting. Book-matching strengthens symmetry and helps long elements carry a steady visual rhythm.
Polished faces feel glassy and show a vivid image, but they can be slippery when wet. Honed or brushed finishes lower reflection and add micro-texture, improving footing in dry interior areas. For wet rooms, favor honed surfaces, tight grout joints (≤3 mm), and routine care to control soap film and grit.
Blue Onyx reacts with acids, which cause etching that appears as dull spots. Use pH-neutral cleaners and soft cloths. A penetrating sealer helps resist stains but cannot stop etch marks. Coasters, mats, and trays protect tops, while prompt wiping limits dull areas that may otherwise need professional repolishing.
Indoor color stability is generally steady on natural lots. Avoid harsh UV if dyed materials are present. Exterior use in freeze–thaw climates is not advised. Heat sources behind backlit panels must be controlled with air gaps and thermal management so the stone stays within safe service temperatures over time.
Available Sizes & Formats of Blue Onyx
Sizes depend on the bench and block, which are often smaller than many marbles. Most slabs are produced at 20 mm and 30 mm thickness, frequently with mesh and resin to stabilize the back. Slab length and width vary by lot; planning extra yield helps when book-matching or end-matching large features. Tiles and cut-to-size pieces support walls, vanities, furniture panels, and column wraps. Mosaics are possible; pavers are not typical. For floors, honed or brushed finishes reduce glare and improve comfort underfoot, while precise calibration and beveling speed installation and keep joints narrow.
Standard thickness is 20 or 30 millimeters. Many slabs receive fiberglass mesh and clear resin for strength. Typical lengths and widths are modest compared with many marbles, so allow extra yield for matching. Confirm thickness tolerance and flatness, especially for backlit assemblies where even contact and consistent diffusion are critical for a uniform glow.
Common modules include 300×600, 600×600, and 600×1200 millimeters. Calibrated thickness and slight edge bevels help achieve neat, narrow joints. A honed, low-sheen finish is practical for many interior floors. Use white, non-staining adhesives to prevent shadowing in thinner pieces and preserve brightness against pale bedding.
Reception desks, stair risers, wall panels, and furniture faces are routine. Review spanning direction against vein orientation and add support where cuts cross multiple bands. Laminated edges can create a thicker look while keeping weight lower. Dry-lay mock-ups confirm matches before final bonding on site.
Mesh-mounted sheets use small modules, often twenty to fifty millimeters. Honed finishes are usually preferred in wet rooms. After grouting, apply a penetrating sealer and remove residue quickly to avoid haze. Shade groups should be kept together so patterns read clean across adjacent sheets during installation.
Blue Onyx is generally not advised as exterior paving. If used in covered, mild climates, keep finishes honed or lightly brushed and adopt a careful maintenance plan. Avoid de-icing salts and strong cleaners. Control point loads with proper bedding to protect against cracking along vein contacts.
Typical heights range from seventy to one hundred twenty millimeters. Match the shade group to adjacent tiles and mark vein direction on the back. Pre-cut miters for outside corners reduce site time and support clean edges that carry the wall pattern through trims and returns.
Blocks are often smaller than many marble blocks. Selection focuses on stable blue backgrounds and even banding. Inspect for through-veins before bidding on large, continuous features. Reserve matching blocks early to secure color continuity across book-matched or end-matched panels for long runs.
Blue Onyx suits interior wall cladding, feature walls, reception desks, elevator surrounds, and bespoke furniture panels where color and light set the tone. Vanity tops and bar fronts are possible with protective habits and clear expectations about patina from small etch marks. Floors are best in low-traffic areas with honed or brushed finishes and good entry mats. Shower walls can be used in standard (non-steam) bathrooms with diligent sealing and low-pH care; avoid heavy-duty wet floors and steam rooms. Exterior façades and heavy-traffic paving are not recommended, especially where freeze–thaw or acidic rain is present. Early coordination with lighting designers is important for even, comfortable backlit surfaces.
Pricing depends on multiple inputs rather than a fixed range. The main drivers include the visual grade of the stone, the size and quality of the block, how the slab is processed, the chosen finish, the thickness and dimensions of the ordered pieces, and logistics from quarry to site. Blue consistency, clean banding, and strong translucency raise value. Larger, cleaner blocks improve yield and reduce waste during matching. Processing that adds stability and polish quality also raises cost. Shipping variables and seasonal access can further change totals between projects and schedules.
Rich, even blue backgrounds with clean, continuous bands sit at the top of the market. Strong translucency without cloudy defects is favored for backlighting. Lots with abrupt color shocks or visible open seams are priced lower as they reduce clean matching and raise waste during cutting and layout.
Big, stable blocks allow better nesting and larger paired pieces for book-matching. Higher yield per block lowers waste and reduces the number of crates needed. Small or heavily veined blocks increase off-cuts, slow down matching, and add cost for projects that require continuous, symmetrical panels.
Vacuum resin, careful curing, and full mesh backing raise stability. Precise calibration, consistent gloss, and square, clean edges support neat joints and fast site work. Accurate pairing for book-matching takes time but saves rework. These steps add to unit cost but reduce risk across cutting, shipping, and installation.
Polished surfaces need high, even gloss and clear resin work, which can add passes on the line. Honed or brushed finishes reduce reflection but may require extra sanding stages or brushing control. Special preparation for backlighting, including face checks and flatness control, can add processing steps and cost.
Thirty-millimeter or oversized parts typically cost more than twenty-millimeter or standard modules. Long panels for features, columns, or stair faces require careful selection and additional handling. Laminated edges create a thicker look but add bonding time and inspection to confirm tight joints and clean corners.
Distance from quarry and production plant affects freight. Container optimization, crate geometry, and seasonality at the quarry also matter. When benches with the desired tone are limited, reservation is needed, which may affect timing and cost. Moisture protection and photo logs support smoother receiving on site.
Extraction uses diamond wire to free blocks from selected benches that show stable blue fields and regular bands. Blocks are mapped for cracks and color changes, then trimmed for safe transport. In the factory, blocks are sliced on gang saws or CNC equipment. Slabs are slowly dried, vacuum-resined to fill micro-voids, and fitted with fiberglass mesh for strength. Calibration brings thickness to target, and the face is finished polished, honed, or brushed. Book-matched pairs are created at this stage and labeled for later dry-lay and installation.
Quality control checks thickness, flatness, gloss, and edge quality before packing. Shade groups are confirmed so adjacent panels read as a coherent field. Packing uses foam sheets, corner protectors, and moisture barriers, then slabs or tiles are placed on A-frames or in fumigated wooden crates. Each crate carries labels with product code, thickness, lot, and destination. Photo logs are shared for traceability. For ocean freight, desiccants are added and crate weight is balanced. Coordination with the site program aligns shipping windows and reduces handling once the cargo arrives.
Use white marble-grade adhesives or epoxies to avoid show-through behind thin, pale pieces. Keep grout joints between 1.5 and 3.0 mm and choose non-staining grouts. Apply a high-quality penetrating sealer after installation and re-seal on a regular schedule based on traffic, typically every 6–12 months (confirm on site). Use pH-neutral cleaners and soft pads. Avoid abrasive powders and acidic products that can dull the surface. Entry mats reduce grit that might scratch. For backlit panels, provide ventilation or heat sinks to manage the temperature behind the stone and protect both the lighting and the slab.
Everyday use benefits from simple habits. Wipe spills quickly, especially citrus, vinegar, or wine, to limit etching on tops. Use coasters under glasses and trays under bottles. In kitchens or bars, accept that small etch marks can appear over time, and plan for periodic professional repolishing if a high-gloss look must be kept. In wet rooms, prefer honed finishes and remove soap film with neutral cleaners. Protect edges during moving and cleaning. Store spare tiles from the same shade group for future repairs so color and banding stay consistent across the whole installation.
JAM Stone Co. sources Blue Onyx through close cooperation with reputable mine holders in Iran’s main carbonate belts. This relationship supports access to benches that show steady blue fields and clean cream bands. In production, slabs pass through vacuum resin lines, precise calibration, and controlled finishing to reach consistent targets. Waterjet and CNC units handle custom shapes and cut-outs for reception desks, columns, and furniture panels. Quality records follow each lot. As a trusted provider of Blue Onyx, the company works with designers on mock-ups and lighting tests to confirm an even glow before site installation.
Process control is central. Blocks are graded for color, band continuity, and stability. Slabs are matched in pairs for book-matching. Flatness, thickness, and edge quality are checked at several points. Shade grouping is kept intact from factory to site. Labels and photo logs support receiving and layout. The company can plan minimum order quantities for boutique work or larger orders for hotels and public spaces. As an experienced supplier of Blue Onyx, JAM Stone Co. also supports scheduling, crate lists by room, and shop drawings for complex features so installation teams can work efficiently.
The company maintains strong ties with mine owners in central–southeastern regions where blue backgrounds are most consistent. This access helps secure blocks with the right tone and band regularity for book-matched walls and long features. Priority blocks are reserved in advance, which supports color continuity across multiple crates. Bench rotation and selective cutting reduce defects that would interrupt patterns. Close feedback between quarry and factory refines selection over time. These practices lead to stable yields and fewer rejections, which is important for projects that demand aligned bands and continuous rhythm across large interior fields.
Packing is planned to protect edges and polish during long moves. Slabs are interleaved with foam sheets, wrapped with moisture barriers, and locked with corner guards. Fumigated wooden crates or A-frame bundles hold the load steady, and desiccants manage humidity for sea routes. Each bundle carries clear labels for lot, thickness, shade group, and room tags. Photo logs allow a quick check at delivery. Crate geometry is balanced to ease handling and optimize containers. As a regular exporter of Blue Onyx, JAM Stone Co. coordinates documents and schedules so receiving, dry-lay, and installation can begin without delay.
is one of the most beautiful and unique marble stones in the world, known for its rarity and mesmerizing appearance.
The international market for blue onyx, a unique and visually striking semi-precious stone, has seen growing demand due to its use in luxury interior design, jewelry, and decorative pieces. Key markets include the United States, Europe, and the Middle East, where high-end architecture and affluent consumers drive interest in rare and aesthetically appealing materials. In
Address: No. 1014, JAM Center, Jamaran St., Niavaran, Tehran, Iran – 1977763988
Email: info@jamstoneco.com
