Among rubies though, there is no shortage of small gems, the kind used in cluster rings. They are somewhat expensive, but readily available. The Carmen Lucia Ruby is an incredibly rare ruby due to both its size and quality. read more
Diamond prices are kept afloat by a combination of inflated profit margins and the controlled release of supply by diamond cartels.Transparent, vibrantly colored corundum (ie. ruby and sapphire) are rare gemstones.Given current conditions in the mine and marketplace, natural untreated sapphires of high grade are scarce. read more