**Complimentary Specimens** As a gesture of appreciation only, winning lots with a final hammer price above €50 will include one small additional mineral offered entirely free of charge. —————- Description: Within the volcanic terrains of Sulawesi, certain silica rich cavities occasionally give rise to one of the most distinctive microcrystalline growth habits known in agate. From these quiet geological pockets emerges the extraordinary formation commonly called grape agate, a natural architecture composed not of sharp crystals but of softly swelling mineral spheres that appear almost biological in their elegance. This specimen presents a beautifully balanced cluster whose overall structure rises in a gently triangular silhouette, giving the piece a stable yet dynamic three dimensional presence. The surface is entirely composed of rounded botryoidal formations that merge and overlap like a miniature landscape of mineral droplets frozen in time. Some globules remain perfectly spherical while others elongate slightly or fuse into freeform contours, producing a rich morphological rhythm across the specimen. Colour is one of the most captivating aspects of this piece. Under neutral light the cluster displays a refined violet purple tone that transitions subtly into lighter lilac across individual spheres. When illuminated from behind the agate reveals its semi translucent nature and the colour softens dramatically into delicate rose pink tones, allowing the internal structure of the chalcedony to glow with a gentle and almost ethereal luminosity. The surfaces remain fully natural and unpolished, preserving the microcrystalline texture characteristic of botryoidal chalcedony growth. This texture gives the specimen a soft waxy lustre, while countless microscopic crystalline points create a subtle sparkling effect when light moves across the surface. The cluster is compact and cohesive, with the individual globules growing tightly together to form a harmonious natural sculpture. The variation in sphere size, the interplay between round and slightly elongated grapes, and the gradual colour transitions all contribute to a specimen that feels organic, balanced and visually engaging from every viewing angle. Recovered from the famous grape agate deposits of Sulawesi, Indonesia, this piece represents the remarkable mineralogical creativity of chalcedony growth, where chemistry and time combine to produce forms that resemble clusters of luminous mineral fruit suspended in stone. Specifications: • Weight: 4.17 g • Weight in carats: 20.85 ct • Dimensions: 23 × 22 × 15 mm • Origin: Sulawesi, Indonesia • Mineral: Agate • Variety: Purple Grape Agate • Crystal habit: Botryoidal chalcedony cluster • Structure: Compact cluster composed of multiple globular formations • Colour: Purple violet to lilac • Colour behaviour: Transitions to soft rose pink under backlight • Transparency: Translucent under transmitted light • Lustre: Waxy • Surface texture: Natural microcrystalline botryoidal surface • Treatment: None Notable Points: • Attractive botryoidal grape agate cluster with a natural semi triangular architecture • Well developed globular formations ranging from spherical to slightly oval shapes • Rich violet purple colouration with gentle lilac tonal variation • Beautiful rose pink translucency revealed under backlighting • Natural fusion of individual spheres creating organic freeform contours • Fine microcrystalline chalcedony texture across all surfaces • Soft waxy lustre typical of botryoidal agate formations • Excellent three dimensional depth created by varied sphere size • Cohesive and stable natural cluster structure • Strong visual balance between colour, form and texture • Authentic Indonesian grape agate morphology • Fully natural specimen with no polishing or artificial treatment Collector’s Interest: Indonesian grape agate has rapidly become one of the most recognisable modern mineral discoveries, admired for its unusual botryoidal growth and distinctive colour palette. Specimens that display both strong colour and a coherent three dimensional cluster structure are especially desirable among collectors. This piece stands out through the elegant triangular composition of the cluster and the harmonious distribution of rounded globules. The interplay between violet tones in reflected light and the delicate rose pink glow revealed under backlighting adds another layer of visual interest, making the specimen particularly engaging for display. Within a collection of botryoidal minerals or Indonesian discoveries, a specimen like this represents a refined example of the natural geometry and chromatic softness that have made grape agate such a sought after material. Lapidary Potential: The aesthetic and mineralogical value of this specimen lies entirely in its preserved natural growth. The botryoidal globules and their compact arrangement form a sculptural composition that would be irreversibly altered by any form of cutting or modification. For this reason the piece is best appreciated as a natural mineral specimen, where its organic architecture, colour transitions and delicate translucency can be observed exactly as they formed within the volcanic cavities of Sulawesi. ——————- Shipping and Handling: All orders are shipped by Portuguese National Post. • Dispatch time: within 1 to 3 business days after payment confirmation to Catawiki • Transit time with CTT service: between 5 to 7 business days within europe and worldwide, depending on destination national post. • A tracking number is always provided Photography and transparency: All photographs are taken under controlled lighting conditions using a macro lens, carefully selected to present each specimen as accurately as possible. No filters, colour enhancement, or artificial saturation are applied. The lighting setup uses a calibrated 5500K light source, replicating neutral daylight to reveal natural tones, surface features, and internal characteristics. Under warmer or weaker indoor lighting, colours may appear slightly different, which is normal. The purpose of this photographic process is documentation and representation, not visual enhancement. Images are intended to reflect the specimen faithfully as it appears under balanced natural light conditions. Identification and ethics: All specimens offered are natural and described to the best of our knowledge, based on direct sourcing, professional experience, and information provided by trusted suppliers working at the origin. Every effort is made to ensure transparency and accuracy regarding identification, locality, and general characteristics, avoiding misleading statements about treatment, provenance, or nature. Customs and import taxes: Any customs duties, import fees, or local taxes applied by the destination country are entirely the responsibility of the winning bidder. These charges are not included in the auction price or shipping cost and are determined by the buyer’s local authorities. Guarantee and resolution: Customer satisfaction is important. In the unlikely event of an issue such as loss, damage, or discrepancy, please contact us promptly through Catawiki’s messaging system. Each case is handled individually and fairly, with appropriate solutions offered when justified. Appreciation and commitment: We sincerely thank you for your trust. Our work focuses on careful selection, accurate representation, and respectful presentation of mineral specimens with character and interest. Each piece is chosen for its individual qualities rather than speculative or financial considerations. We aim to provide a transparent, reliable, and consistent experience for collectors at all levels. With gratitude, GemPulse Minerals