Lustres: Glass Mantelpiece Ornaments with Cut Crystal Prisms

Lustres (also spelled "lusters" in American English) are decorative glass vessels, typically in pairs, designed to stand on a mantelpiece or shelf, featuring cut glass or crystal prism drops hanging from the rim. Originating in the late 18th century and reaching peak popularity in the Victorian era (1840-1900), lustres combine colored or clear glass bodies with cascading prismatic drops that catch and refract light, creating rainbows across a room. They are among the most visually dramatic forms of Victorian decorative glass.

Identification and Types

Lustres are classified by their body material, decoration, and prism style:

• Bohemian overlay lustres: Ruby, cobalt, or green glass overlaid on clear crystal, with the colored layer cut through to reveal the clear glass beneath; typically decorated with gilded panels and floral enameling
• Bristol glass lustres: Opaque white, blue, or green glass with painted enamel decoration, from the Bristol area of England
• Cut crystal lustres: Clear lead crystal with deeply cut patterns and long prismatic drops
• Cranberry glass lustres: Clear cranberry (gold-ruby) colored glass with clear crystal prisms
• Opaline lustres: French opaline glass in pale blue, green, or pink with ormolu mounts and crystal drops
• Prism types: Spear-point, icicle, pendalogue, and button-and-spear prisms in various lengths

Key Origin and Dating

• Bohemian (1840-1900): The most common type; ruby and cobalt overlay with white enamel floral panels
• English (1800-1880): Bristol and other English glasshouses; often simpler forms with good-quality crystal prisms
• French (1830-1870): Opaline glass with ormolu mounts, associated with Baccarat and other houses
• American (1850-1900): Produced by Boston & Sandwich, New England Glass Company, and others

Auction Price Ranges

Condition Factors

Lustres are valued as pairs, and a matched pair in good condition is worth significantly more than twice the value of a single. Key condition issues include:

• Prisms: Original prisms should match in size, cut pattern, and clarity. Missing, replaced, or mismatched prisms are the most common condition issue and reduce value substantially
• Body glass: Check for chips, cracks, and repairs to the glass body, particularly at the rim where prism hooks attach
• Enamel decoration: On Bohemian lustres, painted enamel panels should be intact without flaking or overpainting
• Gilding: Original gilding should be present; wear is common and accepted, but heavy loss reduces appeal
• Drip pans/bobeches: The scalloped rings from which prisms hang should be original and undamaged

Collecting Tips

Lustres are one of the most decorative and affordable categories of Victorian glass, offering dramatic visual impact on a mantelpiece or shelf. Always buy pairs when possible, as single lustres are significantly devalued. Original prisms are critical: count and measure prisms on both pieces to verify they match. Bohemian overlay lustres in ruby and cobalt are the most commonly found and most collected type. French opaline lustres with ormolu mounts represent the highest level of craftsmanship and price. Reproduction prisms are widely available for replacement, but original period prisms have a quality of cut and crystal clarity that distinguishes them from modern reproductions. Display lustres where they can catch light from a window or lamp to maximize their prismatic effect. The Victorian Society and glass collecting clubs occasionally feature lustres in their publications and exhibitions.