{"product_id":"hauyn-0-51ct-trilliant-eifel","title":"Hauyne 0.51 ct – Trilliant Cut, Eifel","description":"\u003cp\u003eThis hauyne weighs \u003cstrong\u003e0.51 ct\u003c\/strong\u003e and comes from the Eifel in Germany. It is worked in a \u003cstrong\u003etrilliant cut\u003c\/strong\u003e and is \u003cstrong\u003euntreated\u003c\/strong\u003e — colour and clarity are as they were laid down in the rough material. At 0.51 ct it is among the larger stones this material yields at all.\u003c\/p\u003e\n\u003cp\u003eThe trilliant cut picks up the triangular basic shape of the rough crystal and shows a lot of surface at little loss of weight. That is exactly why the decision falls this way on a piece of this size: with hauyne, every hundredth of a carat that does not end up in the grinding slurry is a real gain.\u003c\/p\u003e\n\u003ch3\u003eAbout hauyne\u003c\/h3\u003e\n\u003cp\u003eHauyne belongs to the sodalite group and carries the name of the French mineralogist René Just Haüy. In cuttable quality it comes almost exclusively from the volcanic region of the Eifel, where it occurs as tiny crystals in the ejecta around Lake Laach. Cut stones above one carat count as an exception among collectors. We have described this in detail in our guide: \u003ca href=\"\/en\/blogs\/guide\/hauyne-eifel\"\u003eHauyne, the rarest blue gemstone of the Eifel\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eHauyne is sought after above all for its colour: a deep cornflower to neon blue that hardly any other mineral reaches at this intensity. With a Mohs hardness of about 5.5 to 6 it is soft and readily cleavable. That makes it demanding to cut and recommends it for the collection, for pendants or earrings rather than for a ring worn every day.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eStone type: hauyne\u003c\/li\u003e\n\u003cli\u003eWeight: 0.51 ct\u003c\/li\u003e\n\u003cli\u003eOrigin: Eifel, Germany\u003c\/li\u003e\n\u003cli\u003eCut shape: trilliant\u003c\/li\u003e\n\u003cli\u003eTreatment: none, untreated\u003c\/li\u003e\n\u003cli\u003eCutting: our own workshop\u003c\/li\u003e\n\u003cli\u003eLocation: Austria\u003c\/li\u003e\n\u003cli\u003eAvailability: unique piece, one only\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFurther single pieces from the same material can be found under \u003ca href=\"\/en\/collections\/hauyn\"\u003eHauyne\u003c\/a\u003e, rare species beyond it under \u003ca href=\"\/en\/collections\/weitere-edelsteine\"\u003eMore gemstones\u003c\/a\u003e. Would you like your own rough stone cut, or an existing stone reworked? We take that on in our workshop — more under \u003ca href=\"\/en\/pages\/gemstone-cutting-services\"\u003eServices\u003c\/a\u003e.\u003c\/p\u003e","brand":"ManhArt Gemstones","offers":[{"title":"Default Title","offer_id":59046376636741,"sku":"HAU-EIF-051-TRI","price":1800.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0926\/3503\/8021\/files\/hauyne-eifel-0-51ct-triangle_9ce2fd63-3706-48f7-87d9-50c28facca08.jpg?v=1791571797","url":"https:\/\/manhart-gemstones.com\/en\/products\/hauyn-0-51ct-trilliant-eifel","provider":"Manhart Gemstones","version":"1.0","type":"link"}