These natural Ruby crystals from Ketito, Manyara Region, Tanzania, display red fluorescence under Long Wave (LW) UV at 365nm and orange fluorescence under Medium Wave (MW) UV at 310nm.

Every Ruby offered in this listing has been tested by GeoFossils and selected for both fluorescent responses. Fluorescence intensity and distribution vary between individual crystals. A UV light of the appropriate wavelength is needed to observe each response.

In ordinary light, these crystals have pink to reddish-purple colouring, irregular forms and textured surfaces. Ruby is the red variety of corundum, an aluminium oxide mineral coloured by trace amounts of chromium.

Each piece weighs approximately 9.8ct (1.96g) and is supplied in a specimen box with an identification label.

Selected crystals with distinctive structures or terminations are offered as individually priced variants and are excluded from the standard fixed price.

The crystals are natural and unpolished, with no treatments applied. They have only been cleaned with washing-up liquid to remove surface dirt.

Price is for one Ruby crystal, supplied in a labelled specimen box.

Mineral Composition
Corundum: aluminium oxide (Al₂O₃), with trace chromium responsible for Ruby’s red colour.

Metaphysical Properties
In crystal traditions, Ruby is associated with courage, passion and determination. It is often chosen for intentions relating to confidence, motivation and commitment. These associations reflect spiritual beliefs rather than scientifically established effects.

Chakra
Root and Heart.

Zodiac
Aries, Leo and Cancer.

Element
Fire.

Crystal Pairings
Garnet, for intentions relating to determination; Rose Quartz, for compassion; and Smoky Quartz, for grounding intentions.

Location
Ketito, Manyara Region, Tanzania.

We will intuitively choose one Ruby crystal from our stock for you. Each piece varies in shape, colour, surface texture and fluorescent intensity. The approximate weight is a guide rather than an exact weight for every crystal.

Hardness
9 on the Mohs scale.

Shipping Information

We offer reliable and carefully managed delivery services to ensure your order arrives safely and securely.

Royal Mail Tracked 48 — £3.80
Available for smaller parcels weighing up to 2kg, with an estimated delivery time of 2–3 working days after dispatch.

DHL / DPD Courier Delivery — £6.87
Available for UK mainland deliveries weighing up to 20kg, providing a reliable service for larger or heavier orders.

All orders are carefully packaged to protect your specimens during transit.

Shipping options and applicable charges are confirmed at checkout.

Thank you for choosing GeoFossils.