坦桑尼亚采购需求：缅甸红宝石、蓝宝石、天然宝石、黄水晶、石榴石项链、彩色碧玺

I'm looking for red garnet material for our upcoming project. Could you provide detailed specifications, including size options, grade, and any available certifications? Additionally, please share your pricing structure and lead time for bulk orders. Also, I'm interested in knowing about your packaging options and shipping methods. If there are any minimum order quantities, please let me know as well. Looking forward to your prompt response to facilitate our decision-making process. Thanks!