About this stone
Color
PinkRose RedBlack-Veined Pink
Origin
RussiaAustraliaSwedenBrazilMadagascar
Mohs hardness
5.5–6.5
Treatment categories
Natural
Industry-standard treatment
Natural — rhodonite is not typically treated
Mineral chemistry
Manganese inosilicate (Mn,Fe,Mg,Ca)SiO3, often with black manganese oxide veining
Crystal system
Triclinic
Stone family
Pyroxenoid
Common cuts
RoundFaceted Round
Common sizes
4mm6mm8mm10mm
Care notes
Moderate-hard (Mohs 5.5–6.5). Mild soap and soft cloth.
Related stones
Rhodochrosite, Pink Opal, Pyroxmangite
Frequently asked questions
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What's the difference between rhodonite and rhodochrosite?
Both names come from the Greek word for rose, both are pink, and both contain manganese — but they are different minerals with very different properties. Rhodonite is a manganese silicate at Mohs 5.5–6.5, typically pink with characteristic black manganese oxide veining. Rhodochrosite is a manganese carbonate at Mohs 3.5–4 (much softer), typically pink with white banding and no black matrix. For working jewelry, rhodonite is the more durable choice; rhodochrosite's banded look is its appeal but it requires gentler care. -
What is the black material in rhodonite?
The black veins and patches in rhodonite are manganese oxide — typically pyrolusite or related manganese oxide minerals that crystallized alongside the pink rhodonite as the deposit formed. The two minerals share the manganese chemistry but appear as distinct phases in the polished stone. The black matrix is intrinsic to the variety, not an inclusion added later; rhodonite without the black veining is rare in bead-grade material and would typically be sold as gem-grade rhodonite at a different price tier than commercial bead strands. -
Is rhodonite dyed or treated?
Rhodonite is almost always sold natural — the pink color and the black matrix are both intrinsic to the rough. Treatment is uncommon for this variety because the natural look is already what designers want. Bright magenta or vivid neon-pink "rhodonite" strands with no black matrix are dye signals (often dyed howlite or magnesite passed off as rhodonite). Treatment, when present — ask before buying if a strand doesn't specify. -
How durable is rhodonite for daily wear?
Mohs 5.5–6.5. Durable enough for necklaces, bracelets, and earrings without special care, and workable for most rings — though it scratches more readily than quartz-family stones like agate or jasper (Mohs 6.5–7). Care is straightforward: soft cloth with mild soap; avoid ultrasonic and steam cleaning; avoid acidic cleaners (manganese minerals are vulnerable to acid attack). -
What sizes and cuts does Dakota carry?
Our active rhodonite inventory centers on 8mm, 6mm, 10mm, and 4mm rounds, with 2x4mm rondelles and smaller sizes also stocked. Round is the dominant cut. Full size and cut availability is filterable in the grid above; designers replenishing an existing design can confirm exact strand specifications on each listing.