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Continue ShoppingGemstone Glossary D
Danburite – A crystalline mineral similar to topaz. Danburite is generally colorless, but can sometimes have a yellow, brown or even pink hue. Pink Danburites tend to be the most expensive of the different colors. Danburite is named for their first discovery in 1839 in Danbury, Connecticut. The deposits in Danbury are inaccessible today, leaving Mexico as the top source for Danburite crystals, though they can also be found in Japan and Madagascar.
Dendritic Agate – Dendritic agate is a white to grey chalcedony with inclusions of brown to black manganese or iron. Tiny fissures and cracks throughout the agate allow the manganese and iron to seep in creating a fern like pattern and is named after the Greek word for tree, “dendron”. Dendritic agate is believed to promote self esteem and emotional balance.
Dendritic Sandstone – Quartz, also called Rock Crystal, is the second most abundant mineral on earth. It is naturally colorless in its basic pure form, though there are nearly endless varieties and inclusions that can occur creating many colors and varieties. The ideal Quartz Crystal will have 6 prismatic faces with a 6 sided pyramid end, though it can also grow as drusy, massive structures and many other forms.
Desert Rose – Also called Sand Rose, Gypsum Rose, Selenite Rose and Rose Rock. Desert Roses are a formation of gypsum and barite. These crystals form as flat circular plates that fan out giving them their rose blossom shape. Desert Roses can be white, cream, golden, brown, yellowish or a rosy sand tone. Most commonly found in Oklahoma, it’s no wonder the Rose Rock has been their official state rock since 1968.
Dinosaur Bone – Petrified, or Fossilized, dinosaur bones are specimens in which the cellular structure has been replaced with minerals, such as quartz, giving it an almost marbled appearance. Dinosaur Bone can be seen in yellow, brown, red blue and blue-grey hues. The rarest colorations are red and dark yellow-gold.
Dinosaur Egg – Fossil dinosaur egg shell fragments are generally a warm brown hue and have a textured surface created by tiny pores in the surface of the shell.
Dinosaur Tooth – Fossil dinosaur egg shell fragments are generally a warm brown hue and have a textured surface created by tiny pores in the surface of the shell.
Diopside – Diopside is a silicate mineral that forms as prismatic crystals dusplaying hues ranging from grey and brown to blue and green.
Dioptase – An uncommon copper silicate mineral. Dioptase can be either emerald green or a blue-green color. First discover in the late 18th century in Kazakhstan, these fragile crystals can also be used as pigments for paint when ground. The finest Dioptase crystals have been found in Namibia, though it is said that this mine is now exhausted.
Disthen – Disthen is the German word for Kyanite, which is a blue silicate mineral. These crystals are seen most often in a deep, almost denum blue hue, though other color variations can be found. Kyanite is brittle; making it very difficult to cut faceted stones from, and is often seen as a collectors or display piece or in a raw crystal form in jewelry pieces.
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Terminated Quartz – Quartz, also called Rock Crystal, is the second most abundant mineral on earth. It is naturally colorless in its basic pure form, though there are nearly endless varieties and inclusions that can occur creating many colors and varieties. The ideal Quartz Crystal will have 6 prismatic faces with a 6 sided pyramid end, though it can also grow as drusy, massive structures and many other forms.
Drusy – In geology, druse, also known as drusy or druzy, refers to a coating of fine crystals on a rock … Druse can be colored by electroplating, a process similar to rhodium application, giving the stone a fancy look, and a brighter appearance
Drusy Fossilized Shell – Quartz encrusted shells with drusy (crystals) in the spiraling center that have agatized with time are known as fossil shell drusy. These shells are dated up to 100 million years old and are generally white, grey or yellow earthy tones.