Vintage Singaporean Gold Ring with Oval Blue Gemstone

This is a vintage statement ring featuring a large, oval-faceted light blue gemstone, likely an aquamarine, blue topaz, or synthetic spinel. The stone is securely housed in a high-profile yellow gold setting, which appears to be 18k or 22k gold given the rich color typical of Southeast Asian jewelry. The setting utilizes a stylized claw or petal-like design that elevates the stone for maximum light penetration. The ring is presented in its original clamshell-style box. The box's exterior is covered in a deep red velvet, while the interior is lined with white satin and a blue velvet ring slit. A notable feature is the gold-stamped identification inside the lid for 'POH HENG JEWELLERY GOLDSMITHS LTD' located on North Bridge Road, Singapore, which provides significant provenance and suggests a mid-20th-century origin (circa 1950s-1970s). The piece shows minor signs of age-appropriate wear, including faint scuffs on the metal surface and slight fraying on the velvet box, but the stone appears clear with sharp facet edges. The craftsmanship is refined, characteristic of high-end Singaporean jewelers of that era.