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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6 preforms / 2.940 total carats / 6.1 - 4.9 x 4.5 - 4.4 mm ⁠/ assume minor oil