Specific Gravity and Hardness

Specific Gravity

Weight & Measures

Specific Gravity and Hardness of 14 Common Minerals

Measured on a scale of -

1-20

1-10

Mineral -

SG

HD

1

Graphite (Pencil Lead)

2.2

2.0

2

Quartz

2.6

7.0

3

Turquoise

2.6

5.5

4

Diamond

3.5

10.0

5

Magnetite (Iron)

5.2

6.5

6

Hematite (Iron)

5.3

6.5

7

Pyrite

5.2

6.5

8

Galena (Lead)

7.6

2.5

9

Copper

8.9

3.0

10

Silver

11.1

3.0

11

Mercury (Quicksilver)

13.6

N/A

12

Platinum (Natural)

19.0

4.5

13

Gold

19.3

3.0

14

Platinum (Refined)

20.0

4.5