الإسبنيل حجر كريم معلومات
Spinel is a rare and often flawless gemstone which comes in a wide variety of colors with a durable hardness rating of 8 which is only just behind sapphire, ruby and diamond. With all these attributes one wonders how on earth it can be so undervalued and under-appreciated! Part of the problem is the synthetic Spinel created in the laboratory ...