150 grams Kyanite specimen parcel RB58

3723

存货单位
尺寸（毫米）: x x mm
重量 (cts)
Certified Gemstones: 不
类型: Specimen
颜色

KYANITE SPECIMENS

PARCEL AS PER IMAGE

LARGETS PIECE 44 x 20 x 14 MM

SOURCE FROM BRAZIL

Kyanite is a polymorph with two other minerals; andalusite and sillimanite. A polymorph is a mineral that shares the same chemistry but a different crystal structure with another, or other, minerals. Kyanite is an attractive mineral that has a near sapphire like blue color in some especially nice specimens. Kyanite has a unique characteristic in that it has a wide variation in hardness, in the same crystal. The hardness of kyanite is approximately 4.5 when scratched parallel to the long axis of the crystal and approximately 6.5 when scratched perpendicular to or across the long axis. Other minerals usually have variable hardness on different crystal faces due to a different concentration and oreintation of the atoms in the structure

存货单位
尺寸（毫米）: x x mm
重量 (cts)
Certified Gemstones: 不
类型: Specimen
颜色

KYANITE SPECIMENS

PARCEL AS PER IMAGE

LARGETS PIECE 44 x 20 x 14 MM

SOURCE FROM BRAZIL

运输商	运送至：国家	运送到世界其他地区
FedEx	$12.00 / ：几天天	$39.00 / ：几天天
：国家 FedEx折扣至$12.00 ，适用于包含2或更多商品的订单世界其他地区 FedEx折扣至$39.00 ，适用于包含2或更多商品的订单
Registered Shipping	$9.00 / ：几天天	$16.00 / ：几天天
：国家 Registered Shipping折扣至$9.00 ，适用于包含2或更多商品的订单世界其他地区 Registered Shipping折扣至$16.00 ，适用于包含2或更多商品的订单