Competition cut untreated peridot weighs 3.10 carats and measures 12 x 8mm. This particularly difficult cut is "Utopia" assigned for competitive faceting by Jeff Graham. Hand cut here in our TolpaDesign studio in Texas, USA. The gem is not treated in any way and refractive index tested for authenticity. It is not eye clear, having bubble and smoky inclusions visible in pics. It is slightly bluer than pictured in my opinion when viewed from different angles and different lighting. Set in sterling silver rabbit ear pendant. Chain not included. Shipped promptly, fully insured and gift boxed. Truly one of a kind! Peridot is an August birthstone.