| Traditional Lead Crystal | Glass containing at least 24% lead oxide by mass under commonly used European crystal-glass terminology. | Approximately 1.54–1.70, depending on composition. | Approximately 3.0–4.0 g/cm³. | Very high brilliance, strong light dispersion, and a deep visual sparkle. | Check lead-content declarations, dimensional accuracy, optical clarity, polished edges, annealing quality, and compliance with food-contact rules in the destination market. | Excellent visual impact and weight. More demanding for regulatory review, handling, export documentation, and recycling. | ★★★★☆ |
| Lead-Free Crystal Glass | Specially formulated glass using alternatives such as barium, zinc, potassium, or titanium compounds instead of lead oxide. | Commonly approximately 1.50–1.60, depending on formulation. | Commonly approximately 2.5–3.3 g/cm³. | Clear, bright, and capable of producing attractive sparkle with lower regulatory complexity than lead crystal. | Request composition information, migration-test documentation where applicable, visual inspection records, and confirmation that the material is genuinely lead-free. | Strong balance of brilliance, safer material positioning, manageable shipping weight, and broad suitability for hospitality and home use. | ★★★★★ |
| Soda-Lime Glass with Crystal Styling | Silica-based glass with soda and lime as the principal modifiers; often cut or faceted to imitate crystal. | Approximately 1.50–1.52. | Approximately 2.4–2.6 g/cm³. | Good transparency and decorative appearance, but generally less dispersion and brilliance than high-index crystal glass. | Evaluate bubble level, seeds, cords, inclusions, edge finishing, flatness, thermal-shock performance, and consistency between production batches. | Cost-effective and widely available. Suitable for everyday tabletops, but less luxurious in optical effect. | ★★★★☆ |
| Borosilicate Glass | Silica-based glass containing significant boron oxide, commonly formulated for improved thermal resistance. | Approximately 1.47–1.48. | Approximately 2.2–2.3 g/cm³. | Highly transparent with a clean, technically refined appearance; usually less sparkling than high-index crystal. | Check thermal-shock test results, wall-thickness uniformity, stress patterns, rim strength, and suitability for the intended temperature range. | Excellent for hot and cold beverage service and frequent temperature changes. Lightweight, but not primarily selected for maximum sparkle. | ★★★★☆ |
| Tempered Glass | Usually soda-lime glass strengthened by controlled heating and rapid cooling. | Approximately 1.50–1.52. | Approximately 2.4–2.6 g/cm³. | Clear appearance with limited optical dispersion; surface quality depends on the forming and tempering process. | Check applicable safety-glazing requirements, fragmentation behavior, flatness, roller-wave distortion, edge quality, and resistance to impact and thermal stress. | Very practical for restaurants, hotels, and high-turnover use. Better safety performance than ordinary annealed glass, but chips cannot normally be repaired. | ★★★★☆ |
| Pressed or Molded Crystal-Style Glass | Glass formed under pressure in a mold to create repeated facets, patterns, or decorative textures. | Usually approximately 1.50–1.56, depending on the glass formula. | Usually approximately 2.5–3.2 g/cm³. | Consistent decorative patterning and strong visual texture; brilliance varies with the formulation and facet geometry. | Inspect mold alignment, seam visibility, facet definition, base stability, surface pits, mold marks, and repeatability across lots. | Durable and economical for coordinated table settings. Generally heavier and less individually refined than hand-cut products. | ★★★★☆ |
| Hand-Cut Crystal Glass | Glass blanks shaped by cutting, grinding, and polishing; the base glass may be leaded or lead-free. | Depends on the base glass, commonly approximately 1.50–1.70. | Depends on the base glass, commonly approximately 2.5–4.0 g/cm³. | Distinctive facets, sharp light flashes, and premium craftsmanship when cutting and polishing are well controlled. | Assess symmetry, facet meeting points, polish quality, edge smoothness, wall thickness, base balance, and variation tolerance between pieces. | High decorative value and strong premium positioning. Production capacity, price, and piece-to-piece variation require careful purchasing control. | ★★★★★ |
| Recycled Glass Crystal-Style Tableware | Glass manufactured with a proportion of recovered glass cullet combined with new raw materials. | Usually close to the selected glass formulation, commonly approximately 1.50–1.56. | Usually close to the selected glass formulation, commonly approximately 2.4–3.0 g/cm³. | Can range from clear to lightly tinted or intentionally textured; small visual variations may be part of the design. | Verify recycled-content claims, food-contact suitability, color consistency, inclusions, dimensional tolerance, and batch-to-batch appearance. | Good sustainability positioning and distinctive appearance. Not ideal where perfectly uniform optical clarity is the primary requirement. | ★★★★☆ |