Modifiers matching gemstone:

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

Simple categories matching opaque:

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