{"product_id":"colour-change-trio-estate-sterling-silver-lab-created-alexandrite-filigree-ring-er463","title":"Colour Change Trio - Estate Sterling Silver Lab Created Alexandrite Filigree Ring (ER463)","description":"\u003cp\u003eColour Change Trio - Estate Sterling Silver Lab Created Alexandrite Filigree Ring. This gorgeous ring is crafted from sterling silver, hallmarked 925 SS.  Featuring 3 lab created oval cut faceted alexandrite gemstones, Edwardian Revival styling, and quality craftsmanship. The ornate gallery boasts 3 expertly double claw-set colour change alexandrite gemstones, which sparkle beautifully. The gemstones change colour from purple to teal blue. The gallery exhibits filigree work, adding intricacy and beauty to the ring. The band is smooth and polished, which allows for easy sizing and a comfortable fit. This stunning Edwardian Revival ring looks stunning when worn, a wonderful jewelled piece for any jewelry collection. \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eHistory: The first synthetic sapphire was successfully made in \u003c\/span\u003e\u003cb\u003e1873\u003c\/b\u003e\u003cspan\u003e by the flux method. This was followed shortly by the flame fusion method in 1902. Needless to say, at the turn of the century synthetic gemstones were quickly rising in popularity.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eAlexandrite was \u003c\/span\u003e\u003cb\u003ediscovered in 1830 in the Ural Mountains of Russia and named after Csar Alexander II\u003c\/b\u003e\u003cspan\u003e. The original locality for alexandrite is Russia, however, fine gems have also been found in Brazil, Sri Lanka, Tanzania, Madagascar, Zimbabwe, India, and Burma.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eSince \u003c\/span\u003e\u003cb\u003ethe 1960s\u003c\/b\u003e\u003cspan\u003e, labs have grown synthetic alexandrite—not to be confused with simulated alexandrite, which is actually corundum or colored crystals infused with chromium or vanadium for color. Creating synthetic alexandrite is an expensive process, so even lab-grown gemstones can be expensive.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eSilver was\u003cspan\u003e \u003c\/span\u003e\u003cb\u003efirst found in large amounts around 5000 BC\u003c\/b\u003e, when prehistoric people dug the first copper mines. ... Large-scale silver mining had developed in Anatolia by 3000 BC. This was to meet the demand from the first ancient city states, which used the metal as a common medium of exchange.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eMeasurements: Face of ring  18.00 mm x 8.00 mm \u003c\/p\u003e\n\u003cp\u003eStone Size:  Alexandrite 2.80 carats  \u003c\/p\u003e\n\u003cp\u003eWeight:  3.20 grams \u003c\/p\u003e\n\u003cp\u003eRing Size: 7\u003c\/p\u003e\n\u003cp\u003eCondition: Excellent\u003c\/p\u003e\n\u003cp\u003eOrigin: America  \u003c\/p\u003e\n\u003cp\u003eDate: 21st Century \u003c\/p\u003e","brand":"Rarities Antique Jewelry","offers":[{"title":"Default Title","offer_id":41906042535994,"sku":null,"price":295.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0811\/5305\/files\/DSC_8204_7a41ec17-39a6-4c04-9932-0d4566229c5a.jpg?v=1794176189","url":"https:\/\/raritiesantiquejewelry.com\/products\/colour-change-trio-estate-sterling-silver-lab-created-alexandrite-filigree-ring-er463","provider":"Rarities Antique Jewelry","version":"1.0","type":"link"}