Cobalt Blue Optic Swirl Glass Vase

This is a hand-blown or mold-blown translucent cobalt blue glass vase, characterized by a bulbous, ovoid body that tapers into a flared, trumpet-style neck and rim. The most prominent feature is the optic ribbing or 'swirl' pattern that wraps diagonally around the lower two-thirds of the vessel, creating a sense of movement and dynamic light refraction. The glass possesses a deep, saturated sapphire hue, a classic color achieved through the addition of cobalt oxide to the glass melt. In terms of construction, the piece shows a seamless flow from the rounded shoulders to the neck, indicating skilled craftsmanship. While no maker's mark is visible from this angle, the style is reminiscent of mid-20th-century American art glass, possibly by manufacturers like Blenko or West Virginia Glass, typically dating from the 1950s to the 1970s. The condition appears excellent with no visible chips, cracks, or heavy abrasions, though some minor shelf wear on the base and faint internal mineral deposits from previous use would be expected for an item of this vintage. The thick walls and substantial base suggest a quality weight and durability common in decorative studio glass from this era.

Based on my visual examination of this Cobalt Blue Optic Swirl Glass Vase, I have assessed its value based on its aesthetic qualities and market placement within the mid-20th-century American art glass category. The piece exhibits a deep, saturated sapphire hue and well-executed optic ribbing consistent with manufacturers such as Blenko, Kanawha, or West Virginia Glass. The condition appears to be excellent, with the glass retaining high clarity and no visible structural fractures. Market demand for mid-century cobalt glass remains steady due to its popularity in modern interior decor; however, because this specific form is relatively common and lacks a signature or original foil label, it does not reach the premium prices associated with rare designer-signed pieces or unique studio art glass. Recent auction results for similar unsigned optic swirl vases typically fall within the $40 to $80 range. Limitation on Authentication: This appraisal is based solely on digital imagery. A definitive attribution to a specific maker cannot be finalized without physical inspection. In-person examination is required to verify the 'snap' or pontil mark on the base, which differentiates hand-blown items from mass-produced mold-blown glass. Furthermore, weight and surface wear patterns provide critical evidence of age. Authenticity would be further bolstered by provenance documentation or an original manufacturer's sticker. Scientific testing is generally not cost-prohibited for items in this price bracket, as the visual and tactile characteristics usually suffice for identification.