Are Sapphire and Ruby siblings?

The surprising relationship between sapphires and rubies

~Just different colors? In fact, they're like "brothers"~

Sapphire and ruby.
These two gemstones appear to be different in color and atmosphere, but did you know that they are actually very closely related?

Both are gemstones made from the mineral corundum .
In other words, mineralogically they are the same species. They are almost like brothers .

Different colors mean different names

Only the red corundum is called "ruby."
On the other hand, all other colors (blue, pink, yellow, green, purple, etc.) are called "Sapphire."

✔ Blue → Blue Sapphire ✔ Pink → Pink Sapphire ✔ Orange + Pink → Padparadscha Sapphire ✔ Near-transparent → White Sapphire, etc...

Strangely enough, there is a rule that "red is ruby, anything else is sapphire."

The deciding factor for color is "trace elements"

The color difference between ruby ​​and sapphire is determined by trace elements present in the mineral.

  • The red color of ruby ​​is mainly due to chromium (Cr).

  • Blue sapphire → Caused by iron (Fe) and titanium (Ti)

It's truly a testament to the mysteries of nature that even the slightest difference in composition can completely change the impression of a gemstone.

That's why the fun of choosing is so great

In this way, sapphires and rubies are like "jewelry brothers of different colors" born from the same mineral.

Even if it is the same corundum, different colors can have different atmospheres and meanings.
The fun of choosing is expanded by thinking about "how you want to express yourself" and "what feelings you want to put into it."

  • Deep blue sapphire represents honesty and intelligence

  • Fiery ruby ​​symbolizes passion and love

Both are gemstones with their own strong and beautiful personalities.


We also offer September birthstone rings.

We also offer sapphire rings, which are popular birthstone jewelry.
Perfect for celebrating birthdays, anniversaries, or as a treat for yourself.

This teardrop-shaped ring features a striking design. The milgrain detailing around the ring makes it perfect for those who like antique or cute styles.

■ [September Birthstone] K10YG Single Sapphire Enfis Birthstone Ring / Birthstone Pinky Ring Sizes 1-18 [Custom-Made]

■ [July Birthstone] K10YG Single Ruby Enfys Birthstone Ring / Birthstone Pinky Ring Sizes 1-18 [Custom-Made]

*We can make sizes from pinky to size 18 to order.

A simple round ring framed in gold. It has a clean, sophisticated look. Recommended for those who like simple designs.

■K10YG 1-stone sapphire Julietta ring ¥33,000 (tax included)

■K10YG 1 Ruby Julietta Ring ¥33,000 (tax included)

Which do you prefer, sapphire or ruby?

These two attractive natural stones are sure to help you find the jewelry that suits your taste.

COLETTE GIFT Nagoya Store I.