SI

Faceted Grade Rough SI Gemstones for  lapidary arts and collectors.

They range from "Flawless" (F) to "Included" (I), with several grades in between. From highest to lowest, the grades are F, IF, VVS1, VVS2, VS1, VS2, SI1, SI2, I1, and I2.

SI stands for "Slightly Included," but that doesn't mean it's a bad grade. SI will often give you the most bang for your buck. 

  • We Are Quality Focused Professional Gem lapidary artists and traders. Jam'inGEM offer the true value for money, exporting worldwide.

  • We try to make it easy for you to source gemstones directly from us, using our mine direct source, sourcing ethically.

  • Enhance your gem collection with our selection. Each piece is unique, buy them while available. New material added daily.

  • Guarantee of the best prices and the best quality, cherry-picked at our contacted source!

  • We only buy and sell Selected Goods, and this sets us apart from other dealers.