Your table accents will shine with elegance and class when you use these onyx crystals. Perfect for a reception, graduation party or even prom. You can make your table pieces even more glamorous. Use these polymer Black Onyx Water-Storing Crystal Accents in candle, silk or fresh flower arrangements. These water-storing decorative crystals coordinate beautifully with the black color theme at your event. Each 1-oz. bag makes 1 gallon.