G, H, I, J CRYSTALS

Gartrellite is a rare phosphate mineral typically found in hydrothermal veins and pegmatites. It is admired for its delicate, translucent crystals, often appearing in subtle shades of pale green to soft blue, with a vitreous lustre that catches the light beautifully.

Glaucophane is a striking blue amphibole mineral typically found in high-pressure, low-temperature metamorphic rocks such as blueschists. Its deep, steel-blue to indigo hues and elongated, bladed crystals give it a distinctive, elegant appearance.

Goldstone is a man-made glass infused with sparkling copper flecks, giving it a radiant, glittering appearance that catches the light beautifully. Often found in warm reddish-brown, deep blue, or green varieties, it mimics the look of natural metallic minerals.

Graphite is a naturally occurring form of carbon, commonly found in metamorphic rocks such as marble, schist, and gneiss. It exhibits a metallic grey to black sheen with a soft, layered texture, often leaving a distinctive mark when touched.

Hackmanite is a rare, vibrant mineral from the sodalite family, typically found in alkaline igneous rocks. Its striking colours range from soft violet to rich purple, often displaying tenebrescence—changing hue in sunlight.

Harmotome is a rare zeolite mineral typically found in cavities of basalt and other volcanic rocks. It forms prismatic, translucent to colourless crystals, often exhibiting a sparkling, glass-like appearance with intricate geometric shapes.

Heliodor, a radiant member of the beryl family, is typically found in granitic pegmatites and metamorphic rocks. Its golden-yellow to honey-hued crystals shimmer with remarkable clarity, capturing sunlight in a warm, uplifting glow.

Herderite is a rare phosphate mineral often found in pegmatite veins and granitic environments. It typically forms slender, prismatic crystals with a glassy to vitreous lustre, ranging from colourless to pale yellow or brown, sometimes exhibiting a subtle translucence.

Hiddenite is a rare green variety of spodumene, often found in granite pegmatites and notable for its vibrant apple-green to deep emerald hues. Its transparent to translucent crystals display a subtle brilliance, making it a favourite among collectors.

Howlite is a borate mineral typically found in evaporite deposits, often forming in nodules with a distinctive grey veining over a white base. Its smooth, chalky texture and calming marbled appearance make it highly appealing for jewellery and decorative pieces.

Hydrotalcite is a rare, layered mineral, typically presenting in soft green, blue, or white platy formations with a subtle, pearlescent sheen. Often found in metamorphosed magnesium-rich rocks, it captivates collectors with its delicate, sheet-like crystals.

Indicolite, a rare blue variety of tourmaline, forms in elongated prismatic crystals within granitic pegmatites. Its shades range from deep sapphire to vivid teal, often exhibiting a captivating vitreous lustre.

Iolite, also known as cordierite, is a captivating blue to violet gemstone formed in metamorphic rocks, often displaying a striking pleochroism, showing different colours when viewed from different angles.

Jasper is a vibrant, opaque variety of chalcedony, often found in earthy reds, browns, yellows, and greens, with striking patterns that make each piece unique. Formed from silica-rich sediments, it has been prized since ancient times for adornment and talismans.

Juanitaite is an exceptionally rare lead–iron arsenate mineral, typically forming in oxidised zones of hydrothermal deposits. It appears as delicate green to yellow-green crystals, often finely scattered across its host rock, giving specimens a soft yet striking natural beauty. Due to its rarity, it has become a prized collector’s mineral.