Minerals

Raadeite

Rabbittite

Hardness: 2.5

Rabejacite

Hardness: 3

Raberite

Hardness: 2.5 - 3

Radekškodaite-(ce)

Radekškodaite-(la)

Radhakrishnaite

Radovanite

Radtkeite

Hardness: 2 - 3

Raguinite

Raisaite

Hardness: 2

Raite

Hardness: 3

Rajite

Hardness: 4

Rakovanite

Hardness: 1

Ralphcannonite

Ramaccioniite

Ramanite-(cs)

Ramanite-(rb)

Ramazzoite

Hardness: 2.5

Rambergite

Hardness: 4

Ramdohrite

Hardness: 2

Rameauite

Ramikite-(y)

Hardness: 3

Rammelsbergite

Hardness: 5.5 - 6

Ramosite

Ramsbeckite

Hardness: 3.5

Ramsdellite

Hardness: 3

Ranciéite

Hardness: 2.5 - 3

Rankachite

Hardness: 2.5

Rankamaite

Hardness: 3 - 4

Rankinite

Hardness: 5.5

Ransomite

Hardness: 2.5

Ranunculite

Hardness: 3

Rapidcreekite

Hardness: 2

Rappoldite

Hardness: 4.5

Raslakite

Hardness: 5

Raspite

Hardness: 2.5 - 3

Rastsvetaevite

Hardness: 5 - 6

Rasvumite

Hardness: 4 - 5

Rathite

Hardness: 3

Rauchite

Hardness: 2

Rauenthalite

Hardness: 2

Rauvite

Ravatite

Hardness: 1

Raygrantite

Hardness: 3

Rayite

Hardness: 2.5

Realgar

Hardness: 1.5 - 2

Reaphookhillite

Rebulite

Rectorite

Hardness: 0.5 - 1

Redcanyonite

Hardness: 2

Reddingite

Hardness: 3.5

Redgillite

Hardness: 2

Redingtonite

Hardness: 2

Redledgeite

Hardness: 6 - 7

Reederite

Reederite-(y)

Hardness: 3 - 3.5

Reedmergnerite

Hardness: 6 - 6.5

Reevesite

Hardness: 2

Refikite

Hardness: 1

Reichenbachite

Hardness: 3.5

Reidite

Hardness: 7.5

Reinerite

Hardness: 5 - 5.5

Reinhardbraunsite

Hardness: 5 - 6

Rémondite-(ce)

Hardness: 3 - 3.5

Rémondite-(la)

Hardness: 3

Renardite

Rengeite

Hardness: 5 - 5.5

Renierite

Hardness: 4 - 5

Reppiaite

Hardness: 3 - 3.5

Retgersite

Hardness: 2.5

Retzian-(ce)

Hardness: 4

Retzian-(la)

Hardness: 3 - 4

Retzian-(nd)

Hardness: 3 - 4

Revdite

Hardness: 2

Reyerite

Hardness: 3 - 4

Reynoldsite

Hardness: 4.5

Rhabdoborite-(mo)

Rhabdoborite-(v)

Rhabdoborite-(w)

Rhabdophane-(ce)

Hardness: 3.5

Rhabdophane-(la)

Hardness: 3.5

Rhabdophane-(nd)

Hardness: 3.5

Rhabdophane-(y)

Rheniite

Rhodarsenide

Hardness: 4 - 5

Rhodesite

Hardness: 3 - 4

Rhodium

Hardness: 3.5

Rhodizite

Hardness: 8

Rhodostannite

Hardness: 4

Rhodplumsite

Rhomboclase

Hardness: 2

Rhönite

Hardness: 5 - 6

Ribbeite

Hardness: 5

Richardsite

Hardness: 3

Richardsollyite

Richellite

Hardness: 2 - 3

Richelsdorfite

Hardness: 2

Richetite

Hardness: 3.5

Richterite

Hardness: 5 - 6

Rickardite

Hardness: 3.5

Rickturnerite

Riebeckite

Hardness: 5 - 5.5

Riesite

Rietveldite

Hardness: 2

Rilandite

Hardness: 2 - 3

Rimkorolgite

Hardness: 3

Ringwoodite

Rinkite-(ce)

Hardness: 5

Rinkite-(y)

Hardness: 5

Rinmanite

Hardness: 6 - 7

Rinneite

Hardness: 3

Riomarinaite

Hardness: 2 - 3

Ríosecoite

Hardness: 3.5

Riotintoite

Hardness: 2.5

Rippite

Rittmannite

Hardness: 3.5

Rivadavite

Hardness: 3.5

Riversideite

Hardness: 3

Roaldite

Hardness: 5.5 - 6.5

Robertsite

Hardness: 3.5

Robinsonite

Hardness: 2.5 - 3

Rodalquilarite

Hardness: 2 - 3

Rodolicoite

Roeblingite

Hardness: 3

Roedderite

Hardness: 5 - 6

Rogermitchellite

Roggianite

Rohaite

Hardness: 3 - 3.5

Rokühnite

Rollandite

Hardness: 4 - 4.5

Romanèchite

Hardness: 5 - 6

Romanorlovite

Hardness: 3

Romarchite

Romeite

Römerite

Hardness: 3 - 3.5

Rondorfite

Rongibbsite

Hardness: 5

Ronneburgite

Hardness: 3

Röntgenite-(ce)

Hardness: 4.5

Rooseveltite

Hardness: 4 - 4.5

Roquesite

Hardness: 3.5 - 4

Rorisite

Hardness: 2

Roscherite

Hardness: 4.5

Roscoelite

Hardness: 2.5

Rosemaryite

Hardness: 4 - 4.5

Rosenbergite

Hardness: 3 - 3.5

Rosenbuschite

Hardness: 5 - 6

Rosenhahnite

Hardness: 4.5 - 5

Roshchinite

Hardness: 2.5 - 3.5

Rosiaite

Hardness: 5.5

Rosickýite

Hardness: 2 - 3

Rosièresite

Hardness: 3 - 3.5

Rossiantonite

Rossite

Hardness: 2 - 3

Rößlerite

Hardness: 2 - 3

Rossmanite

Hardness: 7

Rossovskyite

Hardness: 6

Rostite

Roterbärite

Rouaite

Roubaultite

Hardness: 3

Roumaite

Rouseite

Hardness: 3

Routhierite

Hardness: 3.5

Rouvilleite

Hardness: 3

Rouxelite

Roweite

Hardness: 5

Rowlandite-(y)

Hardness: 5.5 - 6.5

Rowleyite

Hardness: 2

Roxbyite

Hardness: 2.5 - 3

Roymillerite

Rozenite

Hardness: 2 - 3

Rozhdestvenskayaite-(zn)

Hardness: 3

Rruffite

Hardness: 3

Ruarsite

Hardness: 6 - 7

Rubicline

Rubinite

Ruby in Feldspar

Ruby in Fuchsite

Ruby in Zoisite

Rucklidgeite

Hardness: 2.5

Rudabányaite

Rudashevskyite

Rudenkoite

Hardness: 1.5

Rüdlingerite

Ruifrancoite

Hardness: 4.5

Ruitenbergite

Hardness: 3 - 4

Ruizite

Hardness: 5

Rumoiite

Rumseyite

Rusakovite

Hardness: 1.5 - 2

Rusinovite

Hardness: 3 - 4

Russellite

Hardness: 3.5

Russoite

Rustenburgite

Hardness: 5

Rustumite

Ruthenarsenite

Hardness: 6 - 6.5

Rutheniridosmine

Hardness: 6 - 7

Ruthenium

Hardness: 6.5

Rutherfordine

Rynersonite

Hardness: 4.5