Lab Ruby Round faceted stones 3, 4 and 5mm 5pack

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Beautiful Red ruby, round faceted stones. Price is for 5 stones Recommended Setting: Prong (optimal) Embeddable Fireable: Firing of these stones is possible. Corundum has a very hi gh Mohs scale rating providing protection against heat. Test fired up to 1400 F, they retain their color and quality for 1/2 hour. Result may vary depending on the firing temperature with slight color changes of the stone possible. Precaution against thermal shock required. Show more