Black Glass: The Dark Elegance of Opaque Glass Collecting
Black glass -- more accurately very deep purple, green, or amber glass that appears black unless held to strong light -- has been produced since ancient Roman times and encompasses a wide range of collectible objects. In the antiques market, "black glass" typically refers to pressed, blown, and molded glass objects from the 19th and early 20th centuries, including vases, tableware, perfume bottles, and decorative items. The deep, dramatic color and high-gloss surface of black glass give it a sophisticated, almost lacquer-like appearance that appeals to both glass collectors and decorators.
Types and Styles
- Pressed black glass: American and European factories produced pressed patterns in dark glass throughout the 1800s; sandwich glass, flint glass, and later pressed patterns
- Blown black glass: Hand-blown bottles, vases, and tableware; often showing pontil marks and irregular forms indicating early manufacture
- Art Deco black glass: Sleek, geometric vases, vanity sets, and tableware from the 1920s-1930s; often combined with chrome or silver accents
- Hyalith glass: Opaque black glass produced in Bohemia (Czech Republic) from the 1820s; often gilded or enameled; highly collectible
- Black amethyst: Deep purple glass appearing black; produced by numerous American glass companies including L.E. Smith, Fenton, and Cambridge
- Jet glass: Pressed glass imitating Whitby jet; popular for mourning jewelry and accessories in the Victorian era
- Le Smith and Fenton: Major 20th-century American producers of black glass tableware and novelty items
Identification
- Light test: Hold the piece to a strong light source; true black glass will reveal its base color (deep purple, green, or amber)
- Maker marks: Some manufacturers marked pieces (Fenton butterfly, Cambridge triangle C); many are unmarked and identified by form and pattern
- Mold seams: Examine seam lines to determine pressed vs. blown production and approximate age
- Pontil marks: A rough or polished pontil on the base indicates hand-blown production
- Weight and ring: Early lead glass is heavier and rings clearly; later soda-lime glass is lighter with a duller tone
Auction Price Ranges
| Category | Typical Range | Exceptional Examples |
|---|---|---|
| Bohemian Hyalith glass (gilded) | $200 - $2,000 | $5,000+ for elaborate sets |
| Art Deco black glass vanity sets | $50 - $300 | $1,000+ for complete, signed sets |
| 19th-century pressed black glass | $20 - $200 | $500+ for rare patterns |
| Black amethyst vases (Fenton, etc.) | $15 - $100 | $300+ for unusual forms |
| Blown black glass bottles (18th c.) | $50 - $500 | $2,000+ for early documented examples |
| Victorian jet glass jewelry | $20 - $150 | $500+ for elaborate sets |
| Cambridge/Fostoria black tableware | $10 - $75 | $200+ for rare pieces |
Condition Factors
- Surface scratches: Black glass shows scratches more prominently than colored glass; examine surfaces carefully under good lighting
- Chips: Chips on black glass expose lighter-colored glass beneath, making them very visible; even small chips reduce value significantly
- Gilt and enamel: On Hyalith and decorated black glass, intact gilding and enamel are essential; wear reduces value proportionally
- Iridescence: Some antique black glass develops a surface iridescence from burial or long exposure; this "sick glass" effect can be attractive or undesirable depending on collector preference
- UV reactivity: Some black glass fluoresces under UV light, which can help identify composition and age
Collecting Tips
- Bohemian Hyalith is the prestige category: Gilded and enameled black glass from the 1820s-1850s represents the finest production and commands the highest prices
- Art Deco black glass is accessible and stylish: Vanity sets, vases, and tableware from the 1920s-1930s are affordable and display dramatically
- Always test with light: The revealed base color can confirm age, origin, and composition
- Black glass displays beautifully: The reflective surface creates dramatic displays; group pieces on light-colored surfaces for maximum contrast
- Distinguish from modern production: L.E. Smith and other companies continued black glass production into the late 20th century; earlier pieces are more valuable
- Mix categories for display: Black glass from different periods and origins creates cohesive, dramatic collections due to the unifying color