A cushion-cut black onyx solitaire in a multi-prong vintage-inspired setting on a slender band — handcrafted in Jaipur from solid 925 sterling silver or gold alloy. Black onyx is a variety of chalcedony (microcrystalline quartz, SiO₂, Mohs 6.5–7). Natural black chalcedony is extremely common in nature; the deep, uniform black colour of commercial onyx is almost universally produced by a dyeing treatment — a heat, sugar, and acid process that has been used since Roman times to produce consistent black from grey or banded chalcedony. Unlike all coloured transparent and translucent stones in this catalogue (moissanite, alexandrite, garnet, aquamarine, morganite, citrine, sapphire, opal), black onyx is fully opaque: it returns no transmitted light. The visual effect of black onyx is entirely from surface reflection — a smooth, glassy cabochon-like polish on the table facets produces a deep, matte-to-gloss black surface that reflects ambient light without internal light dispersion or fire. The contrast between this flat, opaque reflective surface and the polished metal of the band and prongs is the defining visual logic of this ring: the stone does not sparkle — it absorbs. The cushion cut is a pillow-shaped cut with rounded corners and curved sides, derived from the old mine cut (the dominant cut profile before the late 19th century). In the context of a stone with Mohs 6.5–7, the cushion cut’s rounded corners are a practical choice: rounded corners reduce the risk of corner chipping compared to a princess cut (sharp corners) or an asscher (chamfered corners under more mechanical stress). This ring uses a multi-prong setting — more prongs than a standard 4-prong solitaire (likely 6 or 8). The additional prongs distribute the securing force across more contact points around the girdle, providing more comprehensive edge protection for a moderately hard stone. Multi-prong settings are also a characteristic Art Deco and vintage design motif: the prong cluster creates a decorative crown-like silhouette around the stone. The band profile is slender and low-profile, placing all visual emphasis on the stone and its setting. The slender band limits engraving space — see note below.

Stone Details

• Centre Stone: Black Onyx — Cushion Cut; fully opaque, deep black (chalcedony SiO₂, Mohs 6.5–7; commercially dyed from grey or banded chalcedony)
• Setting: Multi-prong vintage solitaire — more than 4 prongs; distributes securing force across the cushion girdle; Art Deco crown-like silhouette
• Ethically sourced

Ring Details

• Style: Cushion-Cut Black Onyx Multi-Prong Solitaire / Art Deco Dark Academia Minimalist Alternative Engagement or Promise Ring
• Metal Base: Solid 925 Sterling Silver or Gold Alloy (select above)
• Band Profile: Slender, low-profile; all visual emphasis directed to the stone and setting
• Hypoallergenic & nickel-free base
• Ring Sizes: US/CA 3 – 11 ¾ (half and quarter sizes available upon request)

Available Materials

• 925 Sterling Silver — note: 925 sterling silver can tarnish naturally over time when exposed to moisture, air, and skin oils. Regular wear and gentle polishing with a silver polishing cloth will restore shine. Store in a sealed anti-tarnish pouch when not wearing
• Gold Alloy — a solid gold-coloured metal alloy (not plated); message us for full composition details

Engraving Note

The slender band profile limits available engraving surface. If you are interested in band engraving, message us before ordering with your request to confirm feasibility and character count.

Custom Sizing

Half and quarter sizes available upon request — message us before ordering.

Occasions & Gift Ideas

• Alternative Engagement Ring, Promise Ring, Anniversary, Statement Piece, Birthday, Gothic Gift
• Perfect for black onyx, cushion cut, Art Deco, Dark Academia, minimalist & alternative bridal styles
• Gift for: Partner, Girlfriend, Wife, Her

Care Instructions

Black onyx (chalcedony, Mohs 6.5–7) is moderately durable — remove before impact activities, swimming, or applying harsh chemicals. The onyx surface can scratch from harder stones or abrasive surfaces; store separately. Clean gently with mild soap, warm water, and a soft cloth — do not use abrasive cloths or brushes on the polished onyx table. The dyed treatment on commercial black onyx is stable under normal wear but can be affected by prolonged exposure to harsh chemical solvents. Do NOT use ultrasonic cleaners. For the sterling silver option: polish periodically with a silver polishing cloth; store in a sealed anti-tarnish pouch.

Returns & Exchanges

• Contact us within 2 weeks of delivery
• Ship item(s) back within 3 weeks of delivery
• Cancellations accepted within 24 hours of purchase — no fees

Packaging

Each piece arrives in an eco-friendly jewelry gift box, shipped in a padded mailer — ready to gift. A tracking confirmation will be sent when your order ships.

All gemstones are quality-tested. Handmade in India.