Rubies are red precious gemstones that belong to the corundum (aluminum oxide) mineral family. Their red color comes from the presence of chromium. Based on origin, they are called Burmese, Thai, Mozambique, Madagascar, Tanzania, African, or Indian rubies. Based on color and special optical effects, you get types like Pigeon Blood Ruby, Star Ruby, and Pink Ruby. They also differ by how they are made — natural/untreated, heat-treated, or lab-grown. The best type of ruby is the Burmese (Pigeon Blood) ruby from Myanmar's Mogok Valley.
What Exactly Is a Ruby?
Before jumping into the different types of rubies, it helps to know what makes a ruby a ruby. Scientifically, a ruby is a variety of corundum — the same mineral family as sapphires. The only real difference? Color. When corundum is red (thanks to trace amounts of chromium), it becomes a ruby. Any other color, and it's called a sapphire.
Rubies rank 9 on the Mohs hardness scale, making them the second hardest gemstone after diamonds. The ancient Hindus called it "ratnaraj" — the King of Gems. That title still fits. In terms of price per carat, a top-quality ruby can actually exceed a diamond of the same weight.
How Are the Different Types of Rubies Classified?
Ruby gem types are sorted in a few different ways. You can classify them by where they come from (origin), what they look like (color), whether they have special optical effects, and how they were made. Most buyers care about origin and color the most, since those two factors drive pricing more than anything else.
1. By Origin (Where They Come From)
This is the most common classification in the gem trade. Ruby types gem buyers ask about most often are based on country of origin — Burma, Thailand, Mozambique, Madagascar, Tanzania, Africa, India, and Afghanistan each produce rubies with distinct personalities.
2. By Color
All rubies are red, but the shade varies a lot. Types of red rubies range from bright pink-red to deep blood red, with secondary hues of purple, violet, orange, or brown showing up depending on the source. The most prized color — pigeon blood red — is a pure, vivid red with just a touch of blue.
3. By Optical Effect
Some rubies display a star-like phenomenon called asterism. These are known as star rubies. Others show chatoyancy (the cat's eye effect), though this is rare. These optical effects make certain ruby stone types especially collectible.
4. By Origin of Formation (Natural vs. Lab-Grown)
Rubies can also be natural (mined from the earth), treated (natural but heat-enhanced), or lab-grown (synthetic). This classification matters a lot from an astrological and investment standpoint — untreated natural rubies command the highest prices and are the ones used in Vedic astrology.
Types of Ruby Stone by Origin
1. Burmese Ruby — The Best Type of Ruby
If you ask any gemologist which is the best type of ruby in the world, the answer is almost always the same: Burmese ruby. These come from Myanmar (formerly Burma), specifically from the Mogok Valley — a region so famous for its gems that it earned the nickname "Valley of Rubies."
What sets Burmese rubies apart is their pigeon blood red color — pure, vivid, with a soft glowing fluorescence that makes them look almost lit from within. This happens because Burmese rubies have very low iron content but high chromium, which reduces the darkening effect and keeps the color bright. There are actually two sub-types worth knowing: Old Burma rubies (mined before the mid-20th century) and New Burma rubies. Old Burma specimens are extremely rare, and some trade for over $1 million per carat.
The most famous example? The Sunrise Ruby — a 25.59 carat Burmese ruby from Mogok, sold at auction in 2015 for $32.42 million. Fine quality rubies from Burma can sell for more than white diamonds of the same carat weight.
2. Thai Ruby
Thai rubies are considered second only to Burmese rubies in quality. They come mainly from the Chanthaburi-Trat district in southeastern Thailand, though some stones marketed as Thai ruby actually come from the Pailin area across the border in Cambodia.
These stones tend to be darker than Burmese ones — more of a deep garnet-like red — because of their higher iron content. The iron also suppresses fluorescence, which is why Thai rubies don't glow the way Burmese ones do. That said, their deep, rich color has a charm of its own, and they are generally more affordable than Burmese rubies of comparable size.
3. Mozambique Ruby
Mozambique has become one of the most talked-about ruby sources in recent years. As production from Mogok declined, Mozambique — particularly the Montepuez region — stepped in as a major supplier. The Montepuez mine, discovered only in 2009, is now considered one of the largest ruby deposits on earth.
Mozambique rubies typically show a vivid red with a slight purplish tint and strong transparency. They can rival Burmese rubies in color intensity, which has won them serious respect in the gem market. The world record ruby is actually from Mozambique — the Estrela de Fura, a 55.22 carat stone that sold at auction in 2023 for $34.8 million, making it the most expensive ruby ever sold.
4. Madagascar Ruby
Madagascar entered the ruby market in the 1990s and has grown into a significant source since then. Rubies from this island often show colors ranging from pinkish-red to vivid red, sometimes with an orange tint. Because Madagascar broke away from the African continent roughly 160 million years ago and now sits just off the coast of Mozambique, rubies from the two countries can look strikingly similar.
Madagascar rubies are valued for their minimal inclusions and good clarity. Some stones show strong fluorescence, giving them an almost magical glow in sunlight. They offer a nice middle ground — better than average, more affordable than top Burmese stones.
5. Tanzanian Ruby
Tanzanian rubies, mainly from the Songea region, are known for their vivid reds and occasional purplish-red tones. One interesting quirk: these stones can shift in appearance based on size. A small Tanzanian ruby looks deeper and darker; a larger one may appear lighter or slightly faded. They are often compared to hessonite garnets in their color character.
6. African Ruby (Kenya)
African rubies — mostly from Kenya — tend to lean toward a darker, purplish-red hue. They come in a range of sizes and qualities, and the deep red ones are the most sought after from this region. Different kinds of ruby stones from Africa are generally more accessible price-wise and are a popular choice in mid-market jewelry.
7. Indian Ruby
India was historically a major ruby source, though production today is much smaller. Two types come from India: rubies from Karur in Tamil Nadu, and Star Rubies from Channapatna in Karnataka. Indian rubies are significant in Vedic astrology — the ruby (Manikya or Manik stone) is linked to the Sun and is worn to boost confidence, health, and fortune. Gem quality varies, but astrologically, Indian rubies hold cultural weight that goes beyond their market value.
8. Afghan Ruby
Afghanistan has been mining rubies for centuries, particularly from the Jegdalek area. Afghan rubies are typically pinkish-red with good fluorescence, similar in some ways to Burmese stones due to comparable geological conditions. They remain relatively rare in the global market but are appreciated by collectors who want something off the beaten path.
Types of Rubies by Color and Optical Effect
1. Pigeon Blood Ruby — The Rarest Type of Ruby
Pigeon blood is not technically a separate type — it's a quality grading term. But it comes up so often in ruby buying that it deserves its own section. The name refers to a very specific shade: pure, vivid red with just a hint of blue or purple, said to resemble the blood from the center of a freshly killed pigeon's eye.
Most pigeon blood rubies come from Burma, though some Mozambique stones qualify too. This color grading is assigned by labs like GRS (Gem Research Swiss), and a certificate calling a stone "pigeon blood" can multiply its value by several times. It is the rarest type of ruby color designation and the most desirable.
2. What Is a Star Ruby?
A star ruby shows a three- or six-pointed star that appears to float on the surface of the stone when light hits it. This optical phenomenon — called asterism — happens because of oriented needle-like inclusions of rutile (called "silk") inside the stone. When cut into a cabochon (rounded, not faceted), the silk reflects light in a way that creates the star.
Star rubies are mined in India (particularly Channapatna, Karnataka), Sri Lanka, Thailand, and Tanzania. Unlike most gems where inclusions lower the value, the silk in a star ruby is exactly what creates its most prized feature. A sharp, well-centered six-rayed star on a vivid red stone is extremely rare and highly valued.
3. Pink Ruby
Pink ruby is a contested term. In the U.S., gemological standards (set by GIA) require a minimum red saturation for a stone to be called a ruby. Stones that don't meet that threshold are labeled pink sapphires. In other countries — Sri Lanka being the most prominent example — lighter corundum gems with a pink-red hue may still be sold as rubies.
Pink rubies are considered less heating in Vedic astrology and are thought to carry a gentler, more feminine energy compared to deep red ones. They are also more affordable, making them a popular choice for buyers who love the stone but have budget limits.
4. Purplish-Red and Brownish-Red Rubies
Rubies can show secondary hues like purple, violet, orange, or brown depending on the trace elements present. Iron tends to push the color toward darker, brownish tones. Titanium increases the intensity of red. A pinkish-red, purplish-red, or orangey-red stone is still a ruby as long as red remains the dominant hue. The different kinds of rubies in this spectrum vary in price — pure red always commands the highest premium.
Which Type of Ruby Is Right for You?
Here's a quick way to think about it:
- Investment / collector piece: Look for an untreated Burmese ruby with a GRS pigeon blood certificate.
- Astrological use (Vedic): Natural, unheated ruby — Burmese, Mozambique, or Ceylon origin preferred.
- Everyday jewelry on a budget: Heat-treated Thai or Mozambique ruby offers great color at a fraction of the price.
- Star ruby lovers: Check Indian (Channapatna) or Sri Lankan sources for the best asterism.
- Affordable alternative to red stones: Lab-grown rubies give you the look at minimal cost.
One more thing worth knowing: different types of ruby stone can look very similar to the naked eye. Even experienced dealers use gemological labs to confirm origin. If you're spending serious money, always get a certificate from GIA, GRS, or Gübelin.
Frequently Asked Questions (FAQs)
1. What are the main types of ruby?
The main ruby gem types are classified by origin (Burmese, Thai, Mozambique, Madagascar, Tanzania, Indian), by color grade (Pigeon Blood, pinkish-red, purplish-red), by optical effects (Star Ruby, cat's eye), and by how they are made (natural untreated, heat-treated, lab-grown).
2. What is the rarest type of ruby?
The rarest type of ruby is the unheated Burmese Pigeon Blood ruby from Myanmar's Mogok Valley. These are incredibly scarce, and top-quality specimens can fetch over $1 million per carat. Old Burma Mogok rubies mined in the 19th and early 20th centuries are among the rarest gemstones on earth.
3. What is the best type of ruby to buy?
The best type depends on your goal. For value and quality, an untreated Burmese ruby is the gold standard. For everyday jewelry on a reasonable budget, a heat-treated Thai or Mozambique ruby offers great color and durability. Always check for a gemological certificate to confirm origin and treatment status.
4. Are all rubies red? What are the different ruby colors?
Yes, all rubies are red by definition — but the shade varies. Types of red rubies range from pinkish-red and orangey-red to vivid pure red (pigeon blood) and dark purplish-red. Secondary hues depend on trace minerals like iron (darkens), chromium (brightens red), and titanium (intensifies color).
5. What is a Star Ruby, and is it valuable?
A Star Ruby displays a star pattern (three or six rays) caused by needle-like rutile inclusions inside the stone. It is cut as a cabochon to show the effect. Unlike most gems, inclusions here add value. A sharp, well-centered star on a vivid red stone is rare and commands a solid premium in the collector market.
6. What is the difference between natural and lab-grown ruby?
Natural rubies formed underground over millions of years; lab-grown ones were created in controlled lab conditions. Both are chemically identical. The difference is rarity and origin. Lab-grown rubies are much cheaper and nearly flawless. Natural untreated rubies are rare, and that rarity drives their significantly higher price and astrological value.