hardness (Mohs’ scale): 5-6 specific Gravity (s.G.): 2.7-2.9 Refractive index (R.i.): 1.5
CODE
61lp ca04 61lp ca05 61lp ca06 61lp ca08 61lp ca01
61lp ca64 61lp ca86 61lp ca97 61lp ca10 61lp ca16
on the bench
WoRkinG With lapis Lapis Lazuli is a relatively soft stone, particularly sensitive to heat and pressure. This is why steam cleaners and ultrasonics should be avoided. It is also best to avoid contact with chemicals.
Lapis is versatile enough that different surface finishes can be applied, from a high polish to a natural, textured finish.
PRODuCT Lapis
Lapis Lapis Lapis Lapis
Lapis Lapis Lapis Lapis Lapis
crystal system: Cubic chemical composition: Sodium Calcium Aluminium Silicate
Lapis Lazuli is a rock consisting mainly of the minerals Lazurite and Calcite. It is a rich blue colour which is usually mottled with flecks of white Calcite and Pyrite.
Malachite
hardness (Mohs’ scale): 4 specific Gravity (s.G.): 3.8 Refractive index (R.i.): 1.65-1.9
CODE 6.0 61Ml Rc06
61Ml oc86 61Ml oc18
8x6 10x8 pRoDuct Focus Malachite malachite is a vibrant green gemstone, with a strong banding in various shades of green. For bezel cups see paGe 256 PRODuCT
crystal system: monoclinic chemical composition: Copper Carbonate hydroxide