Malaya is, just like rhodolite, a pyrope mixed with almandine and spessartine but also has a small amount of grossular in it. To be considered Malaya, the SG should be 3.77-3.90 and RI 1.74-1.76 (there is a small variance in limits depending on the source). The values overlap with standard pyrope and rhodolite, so in some cases, the color determines whether it is a Malaya or not. However, for the cutter, there is no difference. What applies to pyrope also applies to Malaya.

Physical properties:

Chemistry: (Mg,Mn,Fe)+23Al2(SiO4)3
Hardness: 7.25
SG: 3.77-3.90
Cleavage: None
Fracture: Sometimes slightly brittle
Heat sensitivity: None

Optical properties:

RI: 1.74-1.76
Dispersion: 0.026 (medium)
Double refraction: None
Pleochroism: None
Critical angle: 35°

Facet angles (pavilion/crown):

Vargas: 41°/40°
Olson: 39°/37°
Soukup: 42°/37°
Roth: 42°/37°
MDR: 42°/37°
Schlagel: 40°/36°
Hashnu: 41°/39°
Sinkankas: 40°/40°
GIA: 42°/37°
Raytech: 40°/38°

Cutting lap:

Medium - Fine

Facet Polishing:

Vargas: Aluminum oxide on tin/lead, tin oxide on tin
Olson: Chromium oxide on tin
Soukup: Aluminum oxide on tin or tin/lead
Christiansen: Aluminum oxide on tin/lead, tin oxide on tin
MDR: Tin or aluminum oxide on tin, aluminum oxide on type metal

Cabochon Polishing:

Olson: Chromium oxide on leather
Christiansen: Aluminum, tin or chromium oxide on leather or wood
Cox: Aluminum or chromium oxide on leather, cerium oxide on felt
Covington: Chromium or cerium oxide on felt


For best yield




Malaya is often too brittle for coarse or new cutting laps.

Malaya rough

Malaya on Gemdat

There are no products to list in this category.

This web site uses cookies only to keep track of your chosen language and currency, and a id number for your shopping basket. It stores no information for marketing or statistics.
I accept these cookies