Rainbow Light & a Wish for the Sea — Opal Guide
STONE GUIDE
What Is Opal|Play-of-Color, Meaning & October Birthstone
COLOR · MEANING · OCTOBER BIRTHSTONE

A natural opal whose rainbow play-of-color shifts with every angle. From the secret of its glow to the stories it has carried, here it is — together with the collection.
What Is Opal
About the Stone
Opal is a natural stone of silica and water. Minute silica spheres scatter light, creating the rainbow glow known as play-of-color. SMUK chose natural Ethiopian opal, born of volcanic earth — untreated and unheated.

No two stones are alike, each shifting color by the angle. At Mohs 5.5–6.5 and holding water within, it is a delicate stone — please wear it gently.
History & Legend
History & Legend
In ancient Rome it was called opalus (precious stone), prized as the most valuable gem for holding every color at once. A symbol of hope and purity, it was passed down through medieval Europe as a charm for good fortune.
Meaning & Symbolism
Meaning & Symbolism
Opal has long symbolized creativity, hope, and inner light. Its ever-shifting color stays close to those who embrace change and look ahead.

Birthstone & Zodiac
Birthstone & Zodiac
Opal is October's birthstone, also linked to Libra and Scorpio — a chosen gift for those born in October.
Collection
The SMUK Opal Collection
Born from our wish, "Less trash, more marine life." Natural Ethiopian opal, set on Italian Silver 925 with rhodium plating.
On Makuake, the project closed successfully, far surpassing its goal. Thank you for all the support. The pieces are now available on our official site.
View the project →







The signature series was born from a past Makuake project. Thank you for all the support.
Earrings & More

Not to make a statement, but to stay quietly by your side, together with nature. May SMUK's opal add a small light to your everyday.
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