Top 10 Gemstones with Two or More Colors Occurring in One Single Crystal

Metal_Treasure
Very often one single crystal is zoned and the crystal has at least 2 color zones with different colors. Not all gems have multicolored crystals - some gems occur in many colors but never in one crystal so you can't get a ring with two or more colors.

The Top Ten

1 Sapphire Sapphire

Sapphire stones that exhibit two or more colors within a single stone are know as "parti colored" sapphires. They cannot be created synthetically and only occur naturally. Australia is the largest source of particolored sapphire. - Metal_Treasure

2 Trapiche Emerald Trapiche Emerald
3 Tourmaline Tourmaline

Often two or more colors are found in a single tourmaline crystal and they are commonly known as bi-color tourmaline.

Bi-color tourmaline gemstones occur in many color combinations and show multiple color zones throughout the crystal. Bi-color tourmalines are highly prized when the color zoning is well defined and the colors are vivid.
An example is the Watermelon Tourmaline where you have green and red zones in one crystal. - Metal_Treasure

4 Elbaite Elbaite
5 Tanzanite Tanzanite

A Tanzanite crystal often has 3 zones - blue, purple/violet and red - Metal_Treasure

6 Watermelon Tourmaline Watermelon Tourmaline
7 Chambersite Chambersite
8 Ametrine
9 Star Sapphire Star Sapphire

Sapphire can be any color except red, and Star Sapphire is with a white star - Metal_Treasure

10 Fluorite

The Contenders

11 Cymophane / Cat's Eye / Cat's Eye Chrysoberyl Cymophane / Cat's Eye / Cat's Eye Chrysoberyl

This gem looks really cool - AliciaMae

These are all pretty, but this one is my favorite. - KKwing

Yellow-ish with a white strip - Metal_Treasure

12 Star Ruby Star Ruby

Red with a white star - Metal_Treasure

13 Rutilated Quartz Rutilated Quartz

The golden needles you see can also be silver, copper red or deep black. - Metal_Treasure

14 Moonstone Moonstone
15 Seraphinite Seraphinite
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