{"product_id":"matsubokkuri-storm-glass-plus-lapis-lazuli-glass-pen","title":"Matsubokkuri - Storm Glass+ Lapis Lazuli | Glass Pen","description":"\u003cp dir=\"ltr\"\u003eEvery other stone in the Storm Glass+ line lets some light through — ruby glows, quartz nearly disappears, amethyst shifts from deep violet to clear. Lapis lazuli does none of that. It's the one variant where the stone stays fully opaque no matter how the light hits it, so instead of glowing from within, the blue just sits there, solid and matte against the storm glass crystals drifting around it. In Japanese the stone is called 瑠璃 (ruri), and the color it's named for — a deep, slightly uneven blue, sometimes streaked with grey — is meant to recall night sky rather than daylight.\u003c\/p\u003e\n\u003ch4 dir=\"ltr\"\u003eAn Old Stone in a New Instrument\u003c\/h4\u003e\n\u003cp dir=\"ltr\"\u003eLapis lazuli has been ground into pigment and carved into ornament for thousands of years, prized specifically for a blue that doesn't come from any other common mineral. The fragments sealed in this pen aren't uniform — some lean toward pure ultramarine, others carry grey or near-black mottling where the mineral formed less purely — so the color inside the shaft reads less like a single hue than a cluster of related blues.\u003c\/p\u003e\n\u003ch4 dir=\"ltr\"\u003eThe Pen Itself\u003c\/h4\u003e\n\u003cp dir=\"ltr\"\u003eEvery Storm Glass+ pen is shaped freehand over an oxygen torch by Kiyoshi Matsumura at \u003ca href=\"\/pages\/matsubokkuri-glass-pens\"\u003eGlass Studio Matsubokkuri\u003c\/a\u003e in Suginami, Tokyo. The shaft is hollow rather than solid, keeping the pen light in hand, with a collar at the base of the nib to stop it rolling off the desk between lines.\u003c\/p\u003e\n\u003ch4 dir=\"ltr\"\u003eSpecifications\u003c\/h4\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003eTotal length: approx. 175mm\u003c\/li\u003e\n\u003cli\u003eShaft diameter: approx. 12mm\u003c\/li\u003e\n\u003cli\u003eWeight: approx. 21g\u003c\/li\u003e\n\u003cli\u003eContents (non-toxic): water, ethanol, natural camphor, ammonium chloride, potassium nitrate, natural lapis lazuli\u003c\/li\u003e\n\u003cli\u003eNib width: Fine (F), Medium (M), or Broad (B)\u003c\/li\u003e\n\u003cli\u003eHandmade in Japan\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4 dir=\"ltr\"\u003eUsing and Caring for a Storm Glass Pen\u003c\/h4\u003e\n\u003cp dir=\"ltr\"\u003eDip the nib fully before writing — the spiral-cut grooves hold enough ink for several lines per dip. Lapis lazuli sits at around 5 to 5.5 on the Mohs hardness scale, softer than the quartz or ruby used elsewhere in the line, though sealed inside the glass it sees no contact that would wear on it. Rinse under lukewarm water after use and avoid sudden temperature swings, which stress the glass shaft itself.\u003c\/p\u003e\n\u003ch4 dir=\"ltr\"\u003eFrequently Asked Questions\u003c\/h4\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhy doesn't the stone let light through like the others?\u003c\/strong\u003e\u003cbr\u003eLapis lazuli is naturally opaque, unlike quartz, amethyst, or ruby, which all transmit some light. It's a property of the mineral itself, not a processing difference, which is why this pen looks solid blue rather than glowing.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWill every pen have the same shade of blue?\u003c\/strong\u003e\u003cbr\u003eNot exactly. Natural lapis lazuli varies from deep ultramarine to grey-mottled blue depending on where it formed, so the fragments inside each pen carry their own mix of shading.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eBilingual service — English and French.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Matsubokkuri","offers":[{"title":"Fine (F)","offer_id":50808654463201,"sku":"1418363","price":199.99,"currency_code":"CAD","in_stock":true},{"title":"Medium (M)","offer_id":50808468603105,"sku":"1418364","price":199.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0806\/8032\/1249\/files\/1_8bb03e55-b1e7-42a7-a40c-576bbba96824.png?v=1791421016","url":"https:\/\/shosai.ca\/products\/matsubokkuri-storm-glass-plus-lapis-lazuli-glass-pen","provider":"Shosai","version":"1.0","type":"link"}