Two gemstones.
Side by side.

GEMSTONE ONE

Clinozoisite

Clinozoisite: mineral identification, origin, colour, Mohs hardness 6–7, collector safety and care.

Colour & appearance

Colourless, green, pale yellow, grey or pinkish

Mineral family

epidote-group sorosilicate mineral

Mohs hardness

6–7

Representative source regions

Pakistan; Austria; Switzerland; Italy; Tanzania

Pakistan Austria Switzerland Italy Tanzania

Jewellery & care

Transparent material can be collected and occasionally faceted, but cleavage and specimen rarity favour protected use.

ColourlessGreenYellowGrey

Read the Clinozoisite 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.