natural mineral specimen. | Silver Hills Gems

Quartz Botryoidal Crystal Cluster, Boekenhouthoek, 38cm high

Thea Bronn — Fri, 17 Jul 2026 07:05:20 +0000

Natural Quartz Botryoidal Crystal Cluster – Sculptural Mineral Specimen

This natural quartz botryoidal crystal cluster is a visually striking mineral specimen defined by its rounded, grape-like crystal formations and richly textured surface. Formed over millions of years, the clustered quartz growth creates a sculptural, organic appearance that immediately draws attention and invites closer inspection.

Distinctive Botryoidal Formation
Botryoidal quartz is prized for its smooth, bulbous crystal growth, where countless micro-crystals fuse together to form flowing, rounded shapes. This natural structure gives the piece a soft yet dramatic look, setting it apart from traditional pointed quartz clusters and making it highly sought after by collectors and designers.

Natural Colour & Surface Detail
The cluster displays a harmonious blend of warm champagne, beige, honey, and soft caramel tones, often enhanced by subtle mineral staining within the matrix. Fine druzy crystals across the surface add gentle sparkle, catching the light from multiple angles and enhancing the piece’s visual depth.

Statement Display Appeal
With its substantial presence and intricate texture, this quartz botryoidal cluster functions as a natural art piece. It works beautifully as a focal point on shelves, desks, coffee tables, or in display cabinets, complementing both modern and earthy interior styles.

Why Buyers Choose This Piece

Natural, untreated quartz
Rare botryoidal (grape-like) crystal formation
Rich surface texture with subtle sparkle
Warm, neutral colour palette
One-of-a-kind natural specimen
Ideal for collectors, décor, and display

This quartz botryoidal crystal cluster is perfect for buyers seeking something visually distinctive, naturally formed, and impossible to replicate—a mineral specimen that feels both timeless and sculptural.

Rainbow Obsidian in rough, small piece, 30-40mm (roughly size of R5 coin till size of golf ball)

Thea Bronn — Fri, 03 Jul 2026 07:52:03 +0000

Rainbow Obsidian Rough – Small Pieces | 30–40mm

Discover the hidden beauty of these Natural Rainbow Obsidian Rough pieces, sourced in their raw, unpolished form. Measuring approximately 30–40mm—roughly the size of a South African R5 coin up to a golf ball—these striking volcanic glass specimens are perfect for collectors, lapidary artists, wire wrappers, crystal enthusiasts, and anyone who appreciates the beauty of natural minerals.

At first glance, Rainbow Obsidian often appears to be ordinary black obsidian, just as shown in the product photograph. However, its true beauty is revealed when viewed under direct sunlight or a bright light source. Depending on the individual piece and the viewing angle, subtle rainbow iridescence may become visible, while some specimens display a beautiful green to golden-yellow sheen. These optical effects are created by microscopic mineral inclusions within the volcanic glass, making every piece unique.

Because Rainbow Obsidian is a natural material, some pieces display more vibrant flashes than others, while a few may show only subtle iridescence. This variation is a natural characteristic of genuine Rainbow Obsidian and adds to the individuality of every specimen.

Ideal for tumbling, polishing, carving, cabochon cutting, display collections, or creative craft projects, these rough pieces retain their natural volcanic texture and character.

Features:

Genuine natural Rainbow Obsidian rough
Approximate size: 30–40mm
Approximately the size of an R5 coin up to a golf ball
Raw, unpolished natural volcanic glass
Appears black under normal lighting
Displays rainbow iridescence or green-to-golden sheen when viewed in direct sunlight or bright light (varies by specimen)
Ideal for collectors, lapidary work, tumbling, carving, wire wrapping, and display

Please Note: Rainbow Obsidian is a natural volcanic glass. Each piece is unique in shape, size, texture, and the intensity of its iridescent effect. Some specimens will display vivid rainbow flashes, while others may exhibit subtle green or golden highlights that are only visible under certain lighting conditions.

Gem Silica up to palm size

Thea Bronn — Fri, 06 Feb 2026 13:03:10 +0000

Rough Gem Silica – Natural Raw Specimens (Up to Palm Size)

These rough Gem Silica specimens display striking natural blue-green to turquoise tones with organic surface textures. In their raw, unpolished form, each piece highlights the stone’s natural character and variation, making every specimen unique. Sizes range up to palm size, offering a substantial yet manageable piece for display or study.

Gem Silica is appreciated for its vivid colouring and rarity, often sought after by mineral collectors, lapidary enthusiasts, and those looking for visually distinctive natural stone. These rough pieces are ideal for collections, educational reference, or decorative mineral displays.

Product Features:

Natural rough Gem Silica
Unpolished, raw mineral specimens
Size: Up to palm size (shape and dimensions vary)
Natural blue-green to turquoise colour tones
Each piece is one of a kind
Suitable for collectors, display, study, or lapidary use

A visually striking natural stone specimen valued for its colour, uniqueness, and geological interest.

Fluorescent Rough Nepheline syenite, up to palm size

Thea Bronn — Wed, 28 Jan 2026 09:27:59 +0000

Rough Nepheline Syenite – Natural Raw Mineral Specimens

These rough Nepheline Syenite pieces showcase the natural beauty of this unique igneous rock, known for its soft grey, cream, and earthy tones with subtle grain variation. In its raw, unpolished form, each piece highlights the stone’s natural texture and geological character, making it ideal for collectors, educational use, lapidary reference, or decorative mineral displays.

Nepheline Syenite is valued for its durability and distinctive composition, commonly used in geological study and admired for its understated, natural appearance. Each rough specimen is unique in shape, size, and surface pattern, offering an authentic connection to natural stone formation.

Product Features:

Natural rough Nepheline Syenite
Unpolished, raw mineral pieces
Organic textures and neutral colour tones
Each piece is one of a kind
Suitable for collectors, study samples, décor, or craft use

Perfect for mineral enthusiasts, geology students, or anyone who appreciates authentic natural stone specimens.

Pyrite crystal cluster, Peru, 33 x 20 x 24mm

Thea Bronn — Fri, 31 Oct 2025 08:41:03 +0000

Pyrite Crystal Cluster from Peru – 33 x 20 x 24 mm of Natural Golden Brilliance

Add a touch of geological perfection to your collection with this Pyrite Crystal Cluster from Peru, a natural masterpiece measuring 33 x 20 x 24 mm.
Renowned for producing some of the finest pyrite in the world, Peru is celebrated for crystals that display sharp cubic formations, brilliant metallic luster, and radiant golden tones — and this specimen is no exception.

Each facet reflects light like polished gold, revealing the mirror-like sheen and intricate geometry that make pyrite a favorite among collectors and décor enthusiasts alike. Compact yet visually striking, this cluster is perfect for display cases, educational collections, or as a statement piece on any shelf or desk.

✨ Why You’ll Love It:

Authentic Pyrite from Peru – known for world-class quality and brilliance
Dimensions: 33 x 20 x 24 mm – perfect for display or collection use
Brilliant metallic luster – naturally reflective golden finish
Distinct cubic crystal formations – a showcase of nature’s geometry
Collector-grade specimen – ideal for mineral enthusiasts and decorators
Durable and eye-catching – adds elegance and intrigue to any space
100% natural formation – untouched by polishing or cutting

“Small in size but bold in character, this Peruvian Pyrite Cluster captures the timeless beauty of nature’s precision — a perfect blend of science, art, and natural luxury.”