Two gemstones.
Side by side.

GEMSTONE ONE

Covellite

Covellite: copper sulphide, Mohs 1.5–2. Explore identification, origins, buying, safe handling and care.

Colour & appearance

Indigo, dark blue-black with metallic violet, gold and purple iridescence

Mineral family

Copper sulphide

Mohs hardness

1.5–2

Representative source regions

Italy; United States; Peru; Chile

Italy United States Peru Chile

Jewellery & care

Primarily a display mineral, not a robust gemstone. Its colour is often a surface optical effect that can be damaged. The illustrative image is not an authenticated mineral specimen or product photograph.

BlackPurple

Read the Covellite guide

GEMSTONE TWO

Sapphire

Sapphire is a gem variety of corundum, often associated with blue but also found in other colours. Its hardness makes it an enduring jewellery material, although the secu...

Colour & appearance

Blue and other colours

Mineral family

Corundum (Al₂O₃)

Mohs hardness

9

Representative source regions

Sri Lanka, Madagascar, Myanmar, Australia, Thailand and Montana in the United States are recognised sources. The Kashmir region is historically famous for highly valued blue sapphires.

Sri Lanka Madagascar Myanmar Australia Thailand United States

Jewellery & care

Choose the style and setting to suit the specific stone, treatment information and intended use.

Blue

Read the Sapphire guide

Hardness measures scratch resistance, not breakage. Source regions are educational examples, not claims about the provenance of an individual GEMHOOD product. Images may be digital gemstone illustrations.