Melbourne client care · Made in Surat
Ruby is red corundum — the same mineral as sapphire, coloured red by chromium. Lab grown ruby is chemically identical to natural ruby: same hardness (9 Mohs), same vivid red colour, same optical properties. At a fraction of the price of equivalent natural rubies. This guide covers everything about lab grown rubies for fine jewellery.
Ruby is red corundum — aluminium oxide (Al₂O₃) with chromium impurities that create its characteristic red colour. Ruby and sapphire are the same mineral. The distinction is colour only: red corundum is ruby; all other colours are sapphire. Ruby's red colour comes from chromium atoms within the crystal structure absorbing green and yellow light and emitting fluorescent red light — the same fluorescence that makes fine rubies glow from within.
A lab grown ruby is corundum grown in a laboratory with chromium introduced during the growth process to create the red colour. The result is chemically identical to natural ruby — same crystal structure, same chromium mechanism, same physical properties. What differs is the origin: laboratory growth rather than geological formation over millions of years.
Natural fine rubies with deep, vivid "pigeon's blood" red colour from Mogok, Myanmar, are among the most expensive gemstones in the world — more expensive per carat than equivalent diamonds. A 3ct Burmese pigeon's blood ruby can cost $100,000 or more. Lab grown ruby of equivalent colour quality is available at a small fraction of this price.
Colour is the dominant quality factor in ruby — far more important than clarity or cut. The most valuable ruby colour is described as "pigeon's blood" — a vivid, pure, slightly bluish red with high saturation and medium tone.
| Colour Quality | Description | Visual Character |
|---|---|---|
| Pigeon's blood | Vivid, pure red with slight blue modifier. High saturation. Medium tone. | The most intensely beautiful ruby colour. Appears to glow from within. The rarest and most valued natural ruby colour |
| Vivid red | Pure red, high saturation, no significant modifier | Excellent. Immediately striking. Very beautiful. |
| Medium red | Clear red, good saturation | Very good. Attractive and clearly ruby |
| Pinkish red | Red with visible pink modifier | Good but lighter. Approaches pink sapphire territory at the lighter end |
| Dark red / brownish red | Red with dark or brownish modifier | Less desirable. The colour appears muddy or dark rather than vivid |
A ruby engagement ring is one of the most dramatic and personal choices available in fine jewellery. The vivid red of a quality ruby communicates passion, love and deep commitment in a way that is unambiguous — and in a way that no other stone does.
| Ruby Colour | Character | Best Metal | Setting Note |
|---|---|---|---|
| Pigeon's blood / Vivid red | Maximum impact — passionate, bold, unmistakable | Yellow gold or platinum | Yellow gold for warmth. Platinum for cool, dramatic contrast |
| Medium red | Bright and striking, slightly more accessible | Yellow gold or white gold | Versatile — suits warm and cool metals |
| Pinkish red | Softer, more romantic | Rose gold | The warm pink metal and the pink-red stone create a deeply romantic combination |
Natural fine rubies with vivid pigeon's blood colour are among the rarest and most expensive gemstones in existence. Lab grown rubies make the colour accessible.
| Factor | Natural Ruby | Lab Grown Ruby |
|---|---|---|
| Chemical composition | Corundum (Al₂O₃) with chromium | Identical — same corundum with chromium |
| Hardness | 9 | 9 — identical |
| Colour | Variable — fine colour is extremely rare and expensive | Vivid, consistent colour grown to specification |
| Inclusions | Often significant — fine natural rubies nearly always included | Generally very clean — far fewer inclusions than natural |
| Price (1ct vivid red) | $10,000–100,000+ for fine colour | Accessible — fraction of natural price |
| Treatment | 90%+ of natural rubies are heat treated to improve colour | Not treated — colour from growth |
| Traceability | Often limited | Fully traceable to growth facility |
Ruby is one of the most durable gemstones for daily wear. At Mohs 9, it is harder than any common material except diamond and moissanite.
Book a free online consultation. Yash Chandpara shows ruby colour quality on screen in controlled lighting and helps you find the right stone and setting.
