Swirl-Ribbed Art Glass Inkwell

Description

• Estimated Age: Circa 1885–1895
• Form & Decoration: A molded swirl-ribbed art glass inkwell featuring an ombré shading that transitions from a deep rose/raspberry pink at the domed shoulders down to a soft creamy white base. The body and matching swirl lid are hand-enameled with delicate botanical sprays, white blossoms, foliate branches, and a detailed bumblebee in flight.
• Hardware & Liner: Fitted with a beaded, pinned brass collar and hinge mechanism connecting the matching glass lid to the base, complete with its original removable white porcelain insert with a gilt-accented rim.

Glassmaking & Coloring Techniques

The velvety texture and graded coloration of this inkwell were achieved through specialized 19th-century art glass techniques:

• Casing / Layering: A gather of dense white opal (milk) glass was coated or “cased” with a layer of heat-sensitive or colored pink glass (often formulated with gold chloride or copper oxides to produce vibrant rose tones).
• Mold Blowing & Patterning: The hot cased glass gather was blown into a ribbed mold and twisted during expansion to produce the distinct spiral swirl ribbing across both the base and lid blanks.
• Acid Etching (Satin Finish): To transform the naturally glossy surface into “lusterless” satin glass, the annealed piece was submerged in or exposed to hydrofluoric acid vapors. This micro-etched the glass surface uniformly, imparting a soft, matte, velvet-like tactile finish.
• Enamel Decoration & Re-firing: Mineral-based enamel pigments and metallic gilt were painted by hand onto the acid-treated surface and fired in a low-temperature muffle kiln to permanently fuse the artwork without warping the underlying glass.

Manufacturer Context: Mt. Washington Glass Company

• Origins: Founded in 1837 in South Boston, Massachusetts, by Deming Jarves (founder of the Boston & Sandwich Glass Company), Mt. Washington relocated to New Bedford, Massachusetts, in 1869 to expand into fine cut and ornamental art glass.
• Victorian Art Glass Innovations: During the 1880s and 1890s, Mt. Washington became one of the foremost American producers of luxury decorative art glass, patented finishes, and novelties—famed for lines like Peachblow, Burmese, Crown Milano, and Royal Flemish.
• Lusterless Blanks & Shaded Wares: Mt. Washington widely produced opaque and cased lusterless satin blanks for vanity accessories, inkwells, sugar shakers, and biscuit jars, which were then decorated by their in-house decorating department or sold to affiliated decorating firms such as C.F. Monroe and the Smith Brothers.
• Pairpoint Era: In 1894, Mt. Washington merged with the adjacent Pairpoint Manufacturing Company (famed for its silverplate and metal mounts), fully consolidating by 1900 under the Pairpoint name.