Two gemstones.
Side by side.

GEMSTONE ONE

Native Bismuth

Native Bismuth: natural metallic mineral versus laboratory-grown rainbow hopper crystals (shown in the illustration). Identification, buying and safety.

Colour & appearance

Silvery metallic; rainbow iridescence on oxidised, often laboratory-grown crystals

Mineral family

Native element (bismuth)

Mohs hardness

2–2.5

Representative source regions

Germany; Bolivia; Australia; China

Germany Bolivia Australia China

Jewellery & care

Decorative laboratory-grown crystals and collector pieces, not suitable for rough daily wear. Avoid selling lab-grown pieces as rare natural gemstone specimens.

Natural variation

Read the Native Bismuth 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.