{"product_id":"black-cz-square","title":"Cubic Zirconia, Black - Square Cut Facet","description":"\u003cp data-path-to-node=\"1\"\u003eThese sleek Black Cubic Zirconia stones are precision-cut into a classic 4mm square with a 2mm height. Unlike natural black gemstones which can sometimes have organic imperfections, these lab-created stones offer a flawless, uniform \"midnight\" black with a mirror-like finish. The square facet cut (often referred to as a princess or step cut) provides sharp, clean lines and a modern, architectural aesthetic that captures light across its surface with a brilliant, vitreous luster.\u003c\/p\u003e\n\u003cp data-path-to-node=\"2\"\u003eTheir consistent 4mm size makes them perfect for calibrated jewelry settings, such as geometric stud earrings, channel-set bands, or as crisp accent stones in a larger contemporary piece.\u003c\/p\u003e\n\u003ch3 data-path-to-node=\"3\"\u003eKey Properties \u0026amp; Care\u003c\/h3\u003e\n\u003cp data-path-to-node=\"4\"\u003eCubic Zirconia (CZ) is a lab-synthesized crystalline material designed to be a high-durability alternative to natural gemstones. It is exceptionally tough and maintains its sparkle even with heavy daily wear:\u003c\/p\u003e\n\u003cul data-path-to-node=\"5\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,0,0\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"5,0,0\"\u003eMohs Hardness:\u003c\/b\u003e Black CZ has a hardness of approximately \u003cb data-index-in-node=\"56\" data-path-to-node=\"5,0,0\"\u003e8.5\u003c\/b\u003e on the Mohs scale. This makes it significantly harder than most natural semi-precious stones, meaning it is highly resistant to scratching, scuffing, and dulling.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,1,0\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"5,1,0\"\u003eCleaning:\u003c\/b\u003e These stones are very easy to maintain. You can clean them with lukewarm water, mild soap, and a soft-bristled brush to remove any skin oils or dust. They are also safe for use in ultrasonic and steam cleaners, provided the jewelry setting itself can handle those methods.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,2,0\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"5,2,0\"\u003eMaintenance:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul data-path-to-node=\"5,2,1\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,2,1,0,0\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"5,2,1,0,0\"\u003eResilience:\u003c\/b\u003e Unlike natural black stones (like Obsidian or Onyx), Black CZ is not porous and will not absorb oils or chemicals, ensuring the deep black color never fades or shifts.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,2,1,1,0\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"5,2,1,1,0\"\u003eHeat Resistance:\u003c\/b\u003e CZ is highly heat-resistant, making it a favorite for \"cast-in-place\" jewelry techniques where stones are set in wax and cast directly into molten metal.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,2,1,2,0\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"5,2,1,2,0\"\u003eImpact:\u003c\/b\u003e While very hard, like any crystalline material, a sharp impact against a hard surface could still chip a facet edge.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,3,0\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"5,3,0\"\u003eStorage:\u003c\/b\u003e Because CZ is quite high on the hardness scale, it can scratch softer stones like Amethyst or Turquoise. Store your Black CZ pieces in a separate compartment or a soft pouch to protect your other jewelry.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan data-ast-node-id=\"65\" class=\"rnc2Gd\"\u003eAll photos are for indication only. We cannot guarantee that your screen is displaying the actual colour or refraction of the gemstone.\u003c\/span\u003e\u003c\/p\u003e","brand":"Workspace Tools","offers":[{"title":"Default Title","offer_id":47288989024434,"sku":"CZB1","price":7.2,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0650\/4162\/9362\/files\/IMG_07592.jpg?v=1776734591","url":"https:\/\/workspacetools.co.nz\/products\/black-cz-square","provider":"Workspace Tools","version":"1.0","type":"link"}