Modifiers matching gemstone:

• colored,
• flawless,
• precious,
• large,
• red,
• porous,
• yellow,
• loose,
• fine,
• semiprecious,
• solid,
• sensitive,
• natural,
• exotic,
• clean,
• beautiful,
• real,
• common,
• rare,
• popular,
• unusual,
• additional,
• nonporous,
• refractive,
• african,
• valuable,
• black,
• colorless,
• important,
• genuine,
• native,
• hardest,
• white,
• opaque,
• coloured,
• untreated,
• hard,
• synthetic,
• harder,
• small,
• color,
• reflective,
• traditional,
• rough,
• fancy,
• polished,
• vibrant,
• brilliant,
• faceted,
• indian,
• durable,
• bright,
• nigerian,
• fragile,
• dark,
• crystalline,
• brazilian,
• organic,
• artificial,
• colorful,
• soft,
• exciting,
• expensive,
• healing,
• transparent,

Simple categories matching opaque:

• object,
• material,
• symbol,
• ink,
• fluid,
• assembly,
• ingredient,
• creature,
• system,
• foodstuff,
• gemstone,
• stone,
• sheet,
• matrix,
• surface,
• pigment,
• web,
• substance,
• container,
• glass,
• fiber,
• copy,
• sack,
• metal,
• layer,
• substrate,
• coating,
• sunscreen,
• original,
• item,
• fabric,
• rock,
• powder,
• tissue,
• paper,
• medium,
• adhesive,
• beverage,
• article,
• mark,
• contaminant,
• liquid,
• language,
• bag,
• paint,
• plastic,
• cell,
• imperfection,
• part,
• obstacle,
• fence,
• mineral,
• picture,
• component,
• body,
• content,
• solid,
• filler,
• image,
• film,
• particle,
• product,
• document,
• barrier,
• conductor,
• oxide,
• matter,
• aggregate,
• gem,
• structure,
• obstruction,