Makuake ·Oct 27, 2026

Natural Blue Sapphire Necklace｜Non-Heated, 3 Cuts

Now live on Makuake｜Special price・Limited quantity

Natural Blue Sapphire necklace deep blue Italian Silver 925 SMUK

💙 Makuake special price・Limited quantity

SMUK is now presenting a necklace made with natural blue sapphire on Makuake.

Natural blue sapphire deep blue brilliance SMUK

A deep, clear, dignified blue. Known as the September birthstone, sapphire has long been cherished as a stone of sincerity, compassion, and nobility.

Blue sapphire necklace on model SMUK

A deep blue just as nature made it, with no heat treatment. At a hardness of 9 — second only to diamond — and with no cleavage, it resists chipping, so you can wear it every day with ease for years to come.

Sapphire's stone meanings are said to be "sincerity," "compassion," and "nobility." Holding the blue of the sky, its color has long been treasured as a symbol of an unwavering heart.

A deep blue, in three cuts

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OVAL necklace (9×7mm・approx. 2.00ct)

The largest of the three cuts, the oval shows off the deep blue in full. Its elongated form makes the neckline look slender and elegant.

Blue sapphire oval necklace 9x7mm deep blue SMUK

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PEAR necklace (9×7mm・approx. 1.9ct)

A soft teardrop outline adds a gentle sense of movement to the deep blue. Refined, with a touch of elegance.

Blue sapphire pear necklace 9x7mm deep blue SMUK

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ROUND necklace (7mm・approx. 1.6ct)

The deep blue shines honestly within a round form. Poised from every angle, and perfect for everyday wear.

Blue sapphire round necklace 7mm deep blue SMUK

Beyond the necklaces, we also offer the loose stone on its own, as well as choose-your-own 2-piece and 3-piece sets.

See more on Makuake →

The Makuake special price is limited in quantity and ends once sold out.

Highlights

💙 Natural blue sapphire 🔥 No heat treatment 🌿 Natural・Undyed 💎 2.00ct large stone 🛡 Hardness 9 🔺 Choose from 3 cuts 🇮🇹 Italian Silver 925 ✨ Rhodium plated

Project Info