Blue sandstone. Square cut. A deep midnight-blue stone filled with glittering metallic flecks that mimic a galaxy of stars — sometimes called the galaxy stone.

These blue sandstone stud earrings feature square-cut blue sandstone stones in a four-prong solitaire setting with push-back posts. Blue sandstone is a man-made glass material in which fine metallic particles — typically copper or chromium-based — are suspended throughout the glass body during production. The result is a deep, near-opaque midnight blue base filled with a dense scattering of brilliant, reflective metallic flecks that catch and throw light from within the stone — creating the characteristic galaxy or starry night visual effect that gives the stone its popular name. In a square princess-style cut, the stone's flat table displays this effect across its full face. Available as a single earring or a pair, in 925 sterling silver, yellow gold plated, or rose gold plated. Handcrafted in Jaipur.

Earring Details

• Stone: Blue sandstone — square/princess cut, deep midnight blue with glittering metallic inclusions
• Setting: Four-prong solitaire stud — clean, geometric, secure
• Post: Standard stud post with push-back closure
• Metal Options: 925 Sterling Silver · Yellow Gold Plated · Rose Gold Plated
• Available as: Single earring or pair
• Style: Unisex — the square geometry and dark color palette suit a wide range of wearing styles

What Is Blue Sandstone?

Blue sandstone — also called goldstone, blue goldstone, or galaxy stone — is a man-made glass, not a naturally occurring mineral. It is produced by melting glass with metallic compounds (most commonly copper oxide or chromium oxide) under controlled conditions that cause fine metallic crystals to grow and suspend throughout the glass as it cools. The resulting material has a deep, translucent-to-opaque body color — midnight blue in the case of blue sandstone — filled with a dense scatter of tiny, highly reflective metallic flecks that sparkle brilliantly when light hits them at any angle. The effect is immediately distinctive: unlike the facet-by-facet brilliance of a cut gemstone, blue sandstone's sparkle comes from thousands of small internal reflectors embedded throughout the stone's body, creating a diffuse, all-over glitter rather than concentrated points of light. The visual result is widely described as resembling a view of the night sky — a deep dark field scattered with bright stars — which is the origin of the galaxy stone name. Blue sandstone has no birthstone or astrological association but has been used in jewelry and decorative objects since at least the 17th century in Venice, where the technique for its production was developed.

Square Cut and the Geometric Solitaire Stud

The square/princess-style cut's flat, broad table maximizes the visible surface area of the blue sandstone, allowing the stone's metallic inclusions to be seen across its entire face without the shadow or angle changes of a domed cabochon. The four straight edges and sharp corners of the square cut create a strictly geometric silhouette that reads as modern and architectural — a deliberate choice for a stone whose visual character is already highly distinctive. In a minimal four-prong setting where the prongs sit at each corner of the square, the stone's full face is unobstructed and the earring's overall profile is clean and low against the earlobe.

Care Instructions

• Remove before swimming, showering, or applying lotions and perfumes (especially for plated finishes)
• Blue sandstone (glass) has a hardness of approximately 5.5–6 Mohs — handle with care and avoid hard impact
• Wipe gently with a soft, dry cloth to maintain the stone's brilliance
• Store in a padded box away from harder stones or surfaces

Packaging

Your earrings ship in secure protective packaging. Any display boxes or props shown in photos are for styling purposes only.

Questions about metals, custom requests, or single vs. pair? Message us — we're happy to help.