Ruby Gemstone – Colors, Origin, Properties, and Value

Ruby is one of the most coveted gemstones in the world, known for its intense red color, exceptional hardness, and millennia-old history. Untreated rubies with natural color intensity and significant origin are particularly prized.
Ruby is one of the most renowned and valuable colored gemstones in the world. Its characteristic red color is due to chromium and ranges from vibrant pink-red to deep, intense red. For centuries, ruby has symbolized passion, strength, and prestige.

Rubies from Myanmar (Burma) and Mozambique are particularly sought after, known for their color quality and collector appeal. High-quality specimens exhibit exceptional brilliance, while natural growth features and inclusions often provide valuable clues to their formation and authenticity.

With its high hardness, rarity, and unmistakable color, ruby remains one of the most important and fascinating gemstones today.

 

Directly to our Ruby gemstones in the shop

 

What is Ruby?

  • Ruby is the red variety of the mineral Corundum.
  • Chemical composition: Aluminum oxide (Al₂O₃).
  • The red color is caused by Chromium.

Important: Only red corundums are called ruby – all other colors are sapphire.

 

Special Properties of Ruby

Ruby is one of the most precious gemstones of all – especially in high purity and intense color.

  • Iconic red color – from vibrant to deep, almost royal
  • Extreme hardness (Mohs 9) – after diamond, one of the hardest gemstones
  • High brilliance
  • Rarity of high-quality stones
  • Fluorescence – Chromium-containing rubies often glow under UV light
  • Typical silk & inclusions – lend character and can increase value

 

Colors & Varieties of Ruby

Rubies display a fascinating palette of natural red hues:

  • Pigeon Blood Ruby
    The most coveted hue. Pure, vibrant red with a slight blue undertone. Extremely rare – top quality.
  • Vivid Red Ruby
    Intense, radiant red – very valuable.
  • Purplish Red Ruby
    Reddish-violet tones, particularly attractive from Africa & Myanmar.
  • Pinkish Ruby
    Borderline between pink sapphire and ruby. Popular for its delicate coloring.
  • Star Ruby
    Very rare. Silky inclusions create a star-shaped asterism.

 

Origin of Important Rubies

Today, Mozambique and Myanmar are among the most important sources for top material. Some of the most famous rubies come from:

  • Myanmar (Mogok & Mong Hsu)
    Historically the best source for Pigeon Blood Rubies.
  • Mozambique
    Modern top quality with intense red tones.
  • Thailand
    Darker, intensely saturated rubies.
  • Tanzania (Winza, Longido)
    Luminous, clear red tones.
  • Afghanistan & Tajikistan
    Pure, slightly purplish-red qualities.
  • Sri Lanka
    Lighter, delicate red varieties.

 

Treatment of Ruby

Rubies are often treated to improve color or clarity. Untreated rubies are extremely rare → particularly valuable.

Typical treatments:

  • Heat treatment (heating) → standard, accepted
  • Fracture-filling (glass filling) → common in less expensive stones
  • Diffusion treatment → rare, but less valued

 

Value Factors of Ruby

1. Color

The most important factor.

  • Pigeon Blood → highest prices
  • pure, intense red → very sought after
  • too dark or too pink → lower value

2. Clarity

Rubies almost always have inclusions.

  • slight silk → typical & accepted
  • eye-clean → very rare & high-priced
  • large cracks → value-reducing

3. Cut

A good cut improves:

  • light reflections
  • color saturation
  • symmetry

4. Size

Rubies are extremely rare in large sizes.

  • over 1 ct → high-price range
  • over 3 ct → rare
  • over 5 ct in top quality → absolute collector's rarity

 

Is Ruby a good gemstone for collectors?

Yes – ruby is one of the most stable colored gemstones in the world. Ruby is a must-have in every high-quality gemstone collection.

Advantages:

  • iconic, unmistakable color
  • extreme rarity
  • strong price development for top qualities
  • high emotional & historical value
  • international demand

 

Ruby in Macro Art

Under the macro lens, ruby shows impressive effects:

  • vibrant, inner glow (chromium fluorescence)
  • fine silk structures
  • deep red color clouds
  • shimmering lines & reflections
  • in star rubies: distinct asterism

For macro artworks (acrylic, aluminum, 3D), ruby is a particularly dramatic stone – intense, powerful, emotional.

 

Care of Ruby

Ruby is very hard, but inclusions can be delicate.

Tips:

  • no ultrasonic cleaner for filled stones
  • do not wear jewelry during sports
  • mild soapy water & lukewarm water
  • store separately to avoid scratching other stones
  • avoid strong heat (especially for filled rubies)

 

Conclusion – A majestic gemstone full of power, fire & historical significance

A gemstone full of energy, elegance, and royal history. Ruby is ideal for people who:

  • love deep, passionate red tones
  • collect stable & rare gemstones
  • prefer luxurious gemstones
  • appreciate gemstones with millennia-old symbolism

👉 Discover our carefully selected Ruby gemstones in the shop.
👉 Upon request, we can also create macro artworks from your ruby.