Manchester Minerals have marketed quality rough and cut gemstones and jewellery making equipment, at competitive trade prices, since 1972. Most orders placed before 1.00pm are despatched the same day.
Tumble polished stones are graded by sieving and sizing is therefore only approximate. Extra Small (XS) are about 6-10mm (Average 25 stones per 5cms pot). Small (S) are about 10-15mm (Average 110 stones per 250gms) Medium (M) are about 15-20mm (Average 50 stones per250gms). Large (L) are about 20mm and larger (Average 24 stones per 250gms)