Aventurine

green · Quartz family

Also known as	Quartz (Quartz family)
Colour	Green
Mohs hardness	7 – lower in impure varieties (defining mineral)
Lustre	Vitreous – waxy to dull when massive
Streak	White
Crystal system	α-quartz: trigonal β-quartz: hexagonal
Transparency	Transparent to nearly opaque
Cleavage	none
Fracture	Conchoidal
Chemical formula	SiO 2
Specific gravity	2.65; variable 2.59–2.63 in impure varieties

What is Aventurine?

Aventurine is a form of quartzite, characterised by its translucency and the presence of platy mineral inclusions that give it a shimmering or glistening effect termed aventurescence.

How to identify Aventurine

Lustre: Vitreous – waxy to dull when massive.
Hardness: Mohs 7 – lower in impure varieties (defining mineral) — hard enough to scratch glass.
Streak: White.
Habit: α-quartz: trigonal β-quartz: hexagonal crystal system.

Aventurine value

Based on 100 recent eBay sold listings, a raw / cluster Aventurine typically sells for $4–$5. After eBay fees a seller nets roughly $3 on a median piece.

Recently sold	Weight	Sold	Date
Natural Green Aventurine Jade Quartz Crystal Agate Ring Gemstone Jewelry Healing	—	$4	2026-06-21
35g 46mm Natural Green Aventurine Star Crystal Healing Reiki Chakra Stone Decor	35 g	$4	2026-06-21
Natural Gemstones Merkaba Pendulum Healing Crystal Pointed Reiki Chakra Pendant	—	$5	2026-06-21
Natural Crystal Worry Stone: Choose Gemstone (Crystal Healing Pocket Stone)	—	$5	2026-06-21
Natural Agate Thumb Massage Stone - Worry Stone for Stress Relief	—	$3	2026-06-21
NATURAL AAA GREEN AVENTURINE & WHITE CZ STERLING 925 SILVER DROP EARRING	—	$14	2026-06-21

Typical recently-sold prices, 2026-06. Condition, size and quality vary widely, so this is an estimate, not an appraisal. See current sold listings on eBay ↗. Full value guide · how we work this out.