Lab-created aquamarine pear cut center. Black onyx round sides. Three-stone prong setting. Transparent pale blue flanked by opaque black — two stones that interact with light in fundamentally opposite ways, placed in direct contrast. March birthstone. Alternative bridal or statement ring.

This three-stone ring features a lab-created pear-cut aquamarine center stone prong-set with its apex pointing toward the fingernail and its rounded base facing the hand, flanked on each side by a round black onyx stone in matching prong settings. The aquamarine’s pale blue transparency sits in direct visual contrast with the flanking onyx stones’ deep, opaque black — center stone and side stones interact with light in opposite ways, producing a three-stone composition where brightness and depth alternate across the ring’s face. The band is smooth and polished, with a slim profile that tapers from the setting. Available in 925 sterling silver, yellow gold plated, or rose gold plated in whole and quarter sizes from US 3 to 9 3/4. Handcrafted in Jaipur.

Ring Details

• Center Stone: Lab-created aquamarine — pear cut, pale blue, March birthstone
• Side Stones: Black onyx — round cut, opaque black
• Setting: Three-stone prong — pear center, round sides
• Metal Options: 925 Sterling Silver · Yellow Gold Plated · Rose Gold Plated
• Sizes Available: US 3 to 9 3/4 including quarter sizes
• Birthstone: Aquamarine is the March birthstone

Transparent and Opaque: The Optical Contrast

The visual logic of this ring is built on a fundamental difference in how the two stone types interact with light. Aquamarine is a transparent gemstone: light enters the stone, refracts through its crystal structure, reflects off its facets internally, and exits back toward the viewer as a combination of white light return (brilliance) and body color (the pale blue transmitted by aquamarine’s beryl crystal structure). The aquamarine center stone is alive with internal light movement — the pear cut’s facets redirect light continuously as the ring moves, and the stone’s pale blue body color fills and softens the white light return. Black onyx is opaque: it does not transmit light and does not have internal facet reflections in the conventional sense. Instead, its polished surface reflects light from a single external layer — a flat, specular surface reflection — producing a glossy, mirror-like sheen on its domed or flat face rather than any internal sparkle or color play. Placing a transparent, light-active stone directly adjacent to two opaque, light-absorbing stones creates a composition where the center appears to emit light from within while the sides appear to absorb it — the aquamarine’s pale glow reads as brighter and more luminous against the onyx’s darkness than it would against any other stone color, because the deep black provides the maximum possible tonal contrast. The same simultaneous contrast principle that makes complementary color pairings vibrant also makes light-and-dark pairings more extreme: each material makes the other appear more extreme than it would in isolation.

About Aquamarine

Aquamarine is a variety of beryl (beryllium aluminum silicate, Be₃Al₂Si₆O₁₈) — the same mineral species as emerald, morganite, and heliodor, each in a different color. Aquamarine’s pale blue-to-blue-green color is caused by trace iron within the crystal structure: ferrous iron (Fe²⁺) produces the blue color, and the ratio of ferrous to ferric iron determines whether the stone leans blue or blue-green. The name comes from the Latin aqua marina — “sea water” — for its characteristic color range from pale sky blue to deep sea blue. Natural aquamarine is found in Brazil (the world’s largest source), Pakistan, Madagascar, and several African countries; the finest specimens are a pure, intense blue without green overtones, most famously from Brazil’s Minas Gerais state. Aquamarine’s hardness is 7.5–8 Mohs — durable for daily ring wear. Lab-created aquamarine shares the same beryl composition and iron color mechanism as natural aquamarine.

About Black Onyx

Black onyx is a variety of chalcedony — a microcrystalline form of quartz (silicon dioxide, SiO₂) — that is uniformly black, typically through natural formation or through dyeing of lighter chalcedony material (a practice that has been used since antiquity and is standard in the commercial black onyx trade). Onyx’s microcrystalline structure means it has no large cleavage planes and takes a very high polish, producing the smooth, glossy, opaque surface that defines its visual character. Hardness is approximately 6.5–7 Mohs. Black onyx has a long history of use in jewelry as a contrast stone and in mourning jewelry — its deep, opaque black was associated in Western and Eastern traditions alike with depth, mystery, protection, and solemnity. In contemporary jewelry, black onyx is valued for its strong graphic contrast capabilities: its absolute black provides a neutral ground against which any adjacent color appears at maximum vividness.

The Pear Cut as a Three-Stone Center

The pear cut’s teardrop silhouette — rounded at one end, tapering to a single point at the other — creates a specific compositional relationship with round side stones in a three-stone setting. The pear’s rounded base is positioned closest to each side stone, and the circular curve of the pear’s base is geometrically compatible with the circular outline of the round side stone: two adjacent curved edges rather than a curved edge meeting a flat or angular one. This means the visual transition from the pear center to each round side stone is smooth and continuous, with the rounded forms flowing into each other. The pear’s apex pointing toward the fingernail creates a directional pull that elongates the visual appearance of the finger and draws the eye toward the ring’s most pointed element at the top. This orientation also means the pear’s widest dimension — across its rounded base — is presented at the ring’s center face, giving the center stone its maximum visible width at the point where it meets the flanking side stones.

Three-Stone Symbolism

The three-stone ring format carries one of the most widely recognized symbolic meanings in jewelry: the three stones represent the past, present, and future of a relationship. In this ring, the black onyx flanking stones — opaque, anchoring, stable — frame the aquamarine center’s transparent, luminous present moment from both sides. The format is also used to represent three people (parent and two children, three siblings, three friends) or three qualities (faith, hope, love; strength, wisdom, beauty). It is one of the most versatile symbolic formats in ring design because the meaning is consistent regardless of the stone combination, and the choice of stones allows the symbolic framework to be personalized by color, birthstone, or material character.

Care Instructions

• Remove before swimming, showering, or applying lotions and perfumes (especially for plated finishes)
• Aquamarine is 7.5–8 Mohs; black onyx is ~6.5–7 Mohs — both durable for daily wear; avoid contact with harder stones that could scratch the onyx surface
• Clean gently with warm water, mild dish soap, and a soft brush; dry thoroughly
• Avoid ultrasonic cleaners and steam cleaners for both stones
• The three-prong settings benefit from periodic inspection across all three stones
• Store in a padded box when not worn

Sizing & Packaging

Please refer to our size guide image before ordering. Your ring ships in secure protective packaging. Any display boxes or props shown in photos are for styling purposes only.

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