Two gemstones.
Side by side.

GEMSTONE ONE

Haüyne

Haüyne: sulfate-bearing sodalite-group feldspathoid; Intense cobalt blue; also pale blue, greenish, yellow or colourless. Learn geological properties, identification and...

Colour & appearance

Intense cobalt blue; also pale blue, greenish, yellow or colourless

Mineral family

sulfate-bearing sodalite-group feldspathoid

Mohs hardness

5.5–6

Representative source regions

Eifel volcanic region, Germany; Mount Somma and Lazio, Italy

Germany Italy

Jewellery & care

Exceptionally rare faceted collector gems exist; fragile size and inclusions favour careful occasional display or low-impact settings.

BlueColourless

Read the Haüyne 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.