At Prins and Prins, we celebrate the extraordinary beauty of natural colored diamonds — gems that captivate not just with their brilliance but also their rare, vibrant hues. Among the most mesmerizing of these are the pink, purple, red, and brown diamonds, a fascinating group collectively known as the “band of many colors.”
Why Are Colored Diamonds So Rare and Valuable?
Diamonds have long been prized for their unparalleled hardness and brilliance. Yet, while most people are familiar with classic white or “colorless” diamonds, natural fancy-color diamonds—those exhibiting striking hues such as pink, red, purple, or brown—are some of the rarest and most valuable gemstones on Earth (Eaton-Magaña et al., 2019). The 18.96-carat Winston Pink Legacy diamond, graded Fancy Vivid Pink, famously sold for over $50 million, setting a record price of $2.6 million per carat (Christie’s, 2018).
What Causes the Unique Colors in Pink and Related Diamonds?
Research by Eaton-Magaña, Breeding, and Shigley (2019) reveals that the enchanting colors in these diamonds mainly stem from an elusive “550 nm absorption band”—a spectral feature that scientists are still investigating. This absorption band interacts with the diamond’s crystal lattice to produce a broad spectrum of pink to purple hues.
Other colors like brown arise from different structural defects within the diamond, often linked to natural plastic deformation—tiny “slip” or “glide” planes inside the crystal formed under immense heat and pressure deep within the Earth’s mantle (Eaton-Magaña et al., 2019).
The Diverse Palette: From Orangy Pink to Deep Red and Brown
Within this spectrum, about 40% of these diamonds show unmodified pink hues, followed by pinkish purple and purple-pink (28%), brownish pink to pinkish brown (17%), and orangy pink (10%) (Eaton-Magaña et al., 2019). More unusual colors like pure red or purple diamonds are even rarer, representing less than 1% of all specimens studied.
The pink diamonds often feature parallel narrow colored bands called lamellae, visible under magnification, which concentrate the color in patterns unique to each stone. These lamellae reflect the diamond’s geological history, offering a glimpse into the extraordinary conditions under which it formed (Eaton-Magaña et al., 2019).
How Are These Colors Graded and Identified?
At the Gemological Institute of America (GIA), each colored diamond undergoes advanced spectroscopic analysis to determine the cause of its color and to assign a precise grade. This grading helps gemologists, jewelers, and collectors understand the value and uniqueness of each stone (Breeding et al., 2018).
For consumers, understanding these features means appreciating that no two colored diamonds are alike — their vibrant hues tell a story millions of years in the making.
Why Choose a Natural-Color Pink or Brown Diamond?
Natural fancy-color diamonds are rare geological treasures, combining beauty, rarity, and uniqueness. At Prins and Prins, we specialize in sourcing and crafting exquisite jewelry that showcases these captivating stones, perfect for those seeking a piece as extraordinary as their story.
Whether you are drawn to the soft blush of a pink diamond, the rich warmth of brown hues, or the mysterious allure of purples and reds, these gems offer a timeless elegance unlike any other.
Sources:
-
Eaton-Magaña, S., Ardon, T., Smit, K. V., Breeding, C. M., & Shigley, J. E. (2019). Natural-Color Pink, Purple, Red, and Brown Diamonds: Band of Many Colors. Gems & Gemology.
-
Christie’s (2018). Winston Pink Legacy Sells for Record $50 Million.
-
Breeding, C. M., et al. (2018). Color Origin of Green Diamonds. Gems & Gemology.
