DESCRIPTION Item description: one loose stone Species: Tourmaline, natural Variety: Verdelite Weight: 3.59 ct. Measurements: 8.13 x 7.95 x 6.48 mm. Treatment: No Indication Hardness: 7-7.5 Mohs scale Refractive index: 1.603-1655 Certificate: ALGT 26485264 NOTES - All gems are sent with a certificate. - The origins are not certified by a laboratory, they are my gemological opinion. - The photos are taken at more than 10X, with macro lens, so there are inclusions that are not really visible to the naked eye. - The pictures aren't true to scale, which is why we give you the exact measurements of the stone so that you can get a good idea of the size. - Colours may look different depending on your screen settings, I try to make them as real as possible SHIPPING. Up to € 100 - Correos - (2-3 weeks) More than € 100 - Zeleris Air (DHL) - (3-7 days) Canarias and Baleares only by Correos Customs charges paid by the buyer