Heating certain Amethyst will turn them green. The heat treated product is then referred to as Green Amethyst, Amegreen or Vermarine& sometimes passed off as the natural green Quartz Prasiolite. Amethyst usually turns yellow, orange, or brown when heated. But some will turn green when heat treated.

This reaction is due to the formation of Iron oxides. Iron compounds with Fe3+ ions are often yellow or orange, alternately Fe2+ compounds are green. It is theorised that reducing environments not oxidizing zones lead to the formation of Amethyst that turns green once heated or to the direct natural growth of Prasiolite.

Green Amethyst & Prasiolite are often confused with the very similar in colour Praseolite which is created by heat treating Iolite.

Some Green Amethyst on the market is synthetic Quartz constructed by hydrothermal methods. Usually it is a vivid mint-green or blue-green instead of the paler golden-green of Prasiolite & heated Amethyst.Prasiolite (also called Vermarine, Green Amethyst or Greened Amethyst) helps to energetically link the physical aspects of the Human self with the spiritual aspects of Higher Self. Prasiolite brings the higher vibration energy of Divine though the heart and into the physical.

Prasiolite helps to ease discomfort for those who find it difficult to express emotion. It is a reminder that all are part and parcel of the Divine, unconditional loving Source. Those who have issues of self-worth or lack self-confidence will find working with Prasiolite helps to foster a deep appreciation and acceptance of self.

Prasiolite is an excellent stone to use when connecting the higher energy of Source to the grounding energy of Earth. This allows a powerful healing energy to flow from the heart into the Earth, removing any discordant, negative energy and filling the space with the capacity for renewed growth. Healers who work with stones also find that Prasiolite will work in a similar manner. Higher, healing energies flow from Source, into the heart, and through the hands, allowing the removal of these energies.

Prasiolite is sometimes called “Green Amethyst” or “Greened Amethyst”, but it is important to note that almost all of the Green Amethyst crystals that you see on the market have had their color lab enhanced.

Physical and Metaphysical Properties for

PROPERTIES FOR STONE: Prasiolite

PRIMARY CHAKRA: Heart-Chakra

CRYSTAL SYSTEM: Trigonal-Crystal-System

CHEMICAL COMPOSITION: Aluminosilicate of Manganese (Mg) and Iron (Fe) in SiO2 Silicon Dioxide

ASTROLOGICAL SIGN: Capricorn-(December-22-to-January-19), Scorpio-(October-23-to-November-21)

NUMERICAL VIBRATION: Number-4, Number-7

HARDNESS: 7-Hardness

COLOR: Green

LOCATION: Brazil

RARITY: Common

PRONUNCIATION: PRAZ-ee-oh-lite

MINERAL CLASS: Silicates

ISSUES AND AILMENTS (PHYSICAL): Abrasions-and-Wounds, Body-Weight-Management, Burns, Eating-Disorders, Endocrine-System-and-Glands, Fertility, Immune-System-Strengthening-and-Support, Skin-Infections-and-Irritations

ISSUES AND AILMENTS (EMOTIONAL): Emotional-Balance, Self-Acceptance, Self-Confidence-and-Self-Worth

ISSUES AND AILMENTS (SPIRITUAL): Communication-and-Connecting-with-Higher-Self

EXTRA GRADE: Beautiful light to dark green color, translucent, < 10% matrix

A GRADE: Nice light to dark green color, partially translucent, 10-25% matrix

B GRADE: Poor light to dark green color, opaque, and/or > 25% matrix

AFFIRMATION: The healing energy of the Universe flows through me and into the earth.

QUESTION: What makes you feel prosperous?

REFERENCE 1: http://www.healingcrystals.com/Butterfly_Animal_Totem_Articles_12674.html