Blue Onyx Sphere #3 – Natural Banded Calcite – 90mm | Argentina

Quick Highlights:

• Size/Dimensions: 90 mm (3.54 in) diameter
• Weight: 1.03 kg (2.27 lb)
• Source: Argentina (San Luis Province)
• Polished in: Donghai, China
• Key Features: Natural circular iron-ring veining, oceanic blue tones with creamy bands, soft parallel layering, planetary appearance, 100% natural and undyed

Introduction:

This 90mm blue onyx sphere is a true collector’s piece. With its layered interplay of sky, ocean, and ice-blue calcite, it evokes the calm visual complexity of a distant planet. One side features an extraordinary concentric iron-oxide ring — a rare natural formation that adds a focal point of symmetry and intrigue.

Polished in Donghai to a brilliant gloss, this 1.03 kg sphere showcases the gentle color zoning and soothing luminosity characteristic of Argentina’s blue calcite deposits, prized for their tranquil aesthetic and natural undyed tones.

Geological Details:

Although commonly called “blue onyx,” this sphere is composed of banded calcite, a calcium carbonate mineral from the trigonal crystal system. The rhythmic layers seen throughout formed through ancient sedimentary processes, as mineral-rich waters deposited calcium carbonate over time to create delicate, flowing bands of color.

The rare concentric iron-oxide inclusion developed through mineralized fractures, forming a natural halo effect. Calcite from Argentina is celebrated for its purity and fluid zoning, displaying soft translucence and pastel contrast that distinguishes it from more linear formations found elsewhere.

Aesthetic Appeal:

This sphere’s beauty lies in its balance — the front face reveals wide, painterly bands of blue and white calcite, while the reverse showcases an eye-catching circular iron seam that radiates like a planetary pole. The coloration shifts gracefully from denim and ice to pale sky blue, producing a tranquil visual rhythm.

The polish is smooth and reflective, emphasizing the soft tonal transitions within the stone. Its circular seam gives it a cosmic symmetry, making this an elegant focal point for collectors and energy enthusiasts alike.

Metaphysical Properties:

Blue calcite is associated with calming the mind, clarifying communication, and connecting to the throat chakra. Its soothing vibration encourages emotional release and inner clarity. The concentric iron ring is seen as a symbol of wholeness and unity — a reminder of life’s cycles and balance.

This large-format sphere carries a grounded yet uplifting energy, ideal for meditation spaces or as a serene centerpiece in home décor.

Rarity:

• Rare concentric seam formation: The natural circular iron-oxide ring is uncommon in Argentine blue calcite
• Large 90mm format with balanced form and high polish
• Undyed, natural color — signature soft blue tones unique to Argentina
• Expertly polished in Donghai to enhance clarity and reflectivity

Why You Will Love This:

This piece radiates harmony — a blend of geological artistry and soothing energy. The circular seam draws the eye inward, offering a point of calm focus. Whether admired for its planetary elegance or spiritual symbolism, this sphere embodies natural balance and beauty.

Collectors will value its rarity and polish, while energy workers will appreciate its grounding yet expansive vibration.

Specifications:

• Diameter: 90 mm (3.54 inches)
• Weight: 1.03 kg (2.27 lb)
• Finish: Fully polished, high-gloss
• Unique Features: Circular iron seam pattern, soft banded color zoning, natural undyed calcite from Argentina

Collector’s Note:

This is one of those pieces where nature and artistry meet in perfect harmony. The concentric seam is not only visually rare — it’s positioned with remarkable balance, creating a sense of planetary symmetry. Large Argentine blue calcite spheres of this clarity and size are increasingly sought after by both collectors and metaphysical practitioners.

Display Recommendations:

• Display this sphere on a rotating LED light base to enhance the soft glow and concentric seam detail
• Pair with clear quartz or selenite for a luminous, high-vibration display
• Ideal for well-lit spaces (natural or soft white light) to reveal the full depth of its soothing hues