Pink Moonstone Tumblestone 30-40mm Large India Feldspar Crystal 100g Bag Polished Gemstone Bulk Stones Collectors Display Set Certificate

Product Overview
This 100g bag of Pink Moonstone tumblestones from India features large, carefully selected polished stones measuring approximately 30–40mm. Each piece displays soft peach to pink tones with a smooth finish, highlighting the natural beauty of this feldspar mineral. Supplied with a Certificate of Authenticity lifetime guarantee card, this bulk set is ideal for collectors, display, crafting, or resale. The listing image shows an example of the stones you will receive, with each bag containing natural variation in colour and pattern. Please refer to the photo for full sizing and scale.

Mineral Identification and Composition
Pink Moonstone is a variety of feldspar, typically belonging to the orthoclase or albite group within the feldspar family. Its composition generally includes potassium aluminium silicate (KAlSi₃O₈) or related feldspar structures, depending on the specific mineral mix.

Moonstone is known for its optical phenomenon called adularescence, a soft internal sheen caused by light scattering between microscopic layers of feldspar within the stone. In Pink Moonstone, this effect may appear as a gentle glow or subtle shimmer across the surface when viewed under light.

Crystal Structure and Physical Properties
Moonstone crystallises in the monoclinic crystal system and forms as part of the feldspar group, one of the most abundant mineral groups in the Earth’s crust. In tumblestone form, the structure appears massive, with internal layering responsible for its optical effects.

Typical properties include:

• Colour: Soft pink, peach, or beige tones with occasional white or grey inclusions

• Lustre: Vitreous to pearly when polished

• Transparency: Translucent to opaque

• Hardness: 6–6.5 on the Mohs scale

The tumbling process enhances the surface smoothness and helps bring out any subtle internal sheen.

Geological Formation and Indian Origin
Pink Moonstone forms in igneous and metamorphic environments, particularly within granitic rocks and pegmatites where feldspar minerals crystallise slowly. These geological settings allow the development of layered feldspar structures that create the characteristic optical effects.

India is a well-known source of Moonstone, producing material with warm tones and attractive internal textures. The deposits are associated with feldspar-rich rock formations, where slow cooling and mineral layering contribute to the stone’s unique appearance.

Appearance and Natural Variation
Each Pink Moonstone tumblestone is unique, with variations in colour intensity, translucency, and internal patterning. Some stones may display a soft, even pink tone, while others show inclusions, banding, or subtle reflective areas.

The polished finish enhances these natural features, creating a smooth surface and allowing light to interact with the internal structure. These variations are a natural result of formation and add to the individuality of each piece in the 100g set.

Uses and Collecting Appeal
Pink Moonstone tumblestones are popular among mineral collectors and gemstone enthusiasts due to their soft colour palette and occasional optical effects. The larger size range of 30–40mm makes these stones particularly suitable for display, decorative arrangements, or inclusion in curated mineral collections.

In non-scientific and cultural contexts, Moonstone is traditionally associated with intuition and cycles and is often appreciated in spiritual or decorative settings. These interpretations are based on cultural traditions rather than scientific evidence.

Authenticity and Presentation

• Genuine Pink Moonstone (feldspar group) from India

• 100g bulk bag of large tumblestones

• Individual stone size: approximately 30–40mm

• Smooth polished finish with natural variation

• Supplied with a Certificate of Authenticity lifetime guarantee card

• Listing image shows an example of the stones you will receive

This Pink Moonstone tumblestone set combines Indian origin, natural feldspar structure, and polished presentation, making it a versatile and attractive addition to any mineral collection or display.