Green to Blue/Green Emerald preforms from Santa Terezinha, Brazil⁠.
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Just waiting for those smooth facets to be laid down.
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Emerald - good emerald - is a difficult rough to source because it is almost always faceted to increase its value instead of selling the rough stones. It takes good timing, when a small deposit is hit, and there is a temporary bump in availability.  Miners need cash and if the local cutting facilities are backed up, the rough gets sold⁠.
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7 preforms / 3.285 total carats / 5.6 x 4.7 - 5.2 x 3.5 mm ⁠/ assume minor oil