16.23ct Rubellite Tourmaline, Oval Cut Prehnite this vintage rough turquoise ring

this vintage rough turquoise ring is a remnant of the typical 1960's American education system

pendant width: 27

Purple cushion cut spinel and natural zircon past

Modified Round Brilliant Cut Sphalerite

bezel: 14kt white gold

16.23ct Rubellite Tourmaline, Oval Cut Prehnite this vintage rough turquoise ringDeep Red Rubellite Tourmaline Stone Stone Variety Rubellite, natural Stone Group Tourmaline Weight (carats) 16. 23cts Weight (grams) 3. 25g Dimensions (millimeters) 18. 70mm x 16. 93mm x 7. 54mm Dimensions (inches) 0. 75" x 0. 66" x 0. 3" Origin likely Brazil Shape faceted oval cut Material Grade B+ Colors dark purple red Treatments Enhancements none Mohs Hardness 7 to 7. 5 SKU Number #1051 Additional Notes Round circles seen in the photos and video