Smoky Quartz Rough for Tumbled - Gem Decor Rough. This material was mined from the Norcross-Madagascar mine. You will receive your Smoky Quartz Rough - Gem Decor Rough (5-30g) with this order. Typical applications include: interior design projects, garden decor applications landscape works, designer pool and spa accents, designer aquarium projects, bulk commercial specimen applications. Further discounts apply for quantity purchasing. Pricing based on purchasing quantity. Container quantities available, for those interested.