Materials and Features:

• High-relief multi-level tiered princess crown dome frame featuring an open-back scalloped petal gallery engineered specifically to maximize light refraction and back-lighting beneath the fine gemstone matrix

• Elite investment-grade precious gemstone cluster holding seven genuine natural Australian crystal fire opals displaying rare, multi-directional green-pink-orange play-of-color flash with zero structural crazing

• Six hand-selected precision-faceted genuine natural rubies exhibiting a rich, vivid pinkish-purple saturation integrated symmetrically into the secondary tier for intense color contrast

• Solid 10K yellow gold high-density construction weighing a substantial 3.7 grams to provide a premium fine jewelry heft and long-term structural durability

• Handcrafted mid-century Thai export goldsmithing technique designed to deliberately maximize individual gemstone face presence and total carat weight layout over basic alloy fractions

• Heavy-gauge archival gold prong system individually securing all thirteen precious stones to eliminate long-term setting movement and guarantee daily wear stability

Type: Open-back tiered cocktail ring

Material Fineness: 10 kt. Gold

Age/Origin: 1960's / Thailand

Marks: 18k (Hallmarked 18K but professionally acid-tested and guaranteed as solid 10K gold to verify transparent material honesty, consistent with 1960s regional tourist export workshop standards)

Measurements:

• Weight: 3.7g

• Dimensions: North American Size 7 (Inside Diameter: 17.32mm); Band width: Approx. 3.3mm flat-profile shank

Condition: Very good vintage condition. The solid yellow gold finish retains a rich, warm polish with no structural distortion. All thirteen precious gemstones are tightly set within their original heavy-gauge gold prongs, and the natural Australian opals exhibit exceptionally bright, fluid color fire with zero internal clouding, drying, or surface facet wear.