1. (noun) very hard native crystalline carbon valued as a gem

• adamant

2. (noun) a parallelogram with four equal sides; an oblique-angled equilateral parallelogram

• rhomb
• rhombus

3. (noun) the area of a baseball field that is enclosed by 3 bases and home plate

• baseball diamond
• infield

4. (noun) the baseball playing field

• ball field
• baseball field

1. (noun) a transparent piece of diamond that has been cut and polished and is valued as a precious gem

• gem
• jewel
• precious stone

2. (noun) very hard native crystalline carbon valued as a gem

• atomic number 6
• c
• carbon
• transparent gem

3. (noun) a parallelogram with four equal sides; an oblique-angled equilateral parallelogram

• parallelogram

4. (noun) a playing card in the minor suit that has one or more red rhombuses on it

• playing card

5. (noun) the area of a baseball field that is enclosed by 3 bases and home plate

• parcel
• parcel of land
• piece of ground
• piece of land
• tract

6. (noun) the baseball playing field

• athletic field
• field
• playing area
• playing field

1. (noun) the area of a baseball field that is enclosed by 3 bases and home plate

• baseball
• baseball game

1. (noun) a transparent piece of diamond that has been cut and polished and is valued as a precious gem

• ice
• sparkler

2. (noun) very hard native crystalline carbon valued as a gem

• black diamond
• carbonado

1. (noun) a playing card in the minor suit that has one or more red rhombuses on it

• minor suit

1. (noun) a parallelogram with four equal sides; an oblique-angled equilateral parallelogram

• rhombic

2. (noun) the area of a baseball field that is enclosed by 3 bases and home plate

• infielder

1. (noun) the area of a baseball field that is enclosed by 3 bases and home plate

• outfield