Gemdle

Blue Gemstones

Blue gemstones and crystals — 48 popular blue stones with photos and identification notes. Looking for blue crystal names for jewellery, collecting or a daily-carry stone? Start here, then test yourself in the crystal quiz.

Crystals that are blue

Stones get their blue colour from trace elements or inclusions, and the same mineral species can occur in several colours — so colour alone never confirms an identification. The most recognisable crystals and gemstones that are blue include Sapphire, Lapis Lazuli, Agate, Turquoise, Topaz, Aquamarine Beryl. Below is every blue stone in Gemdle with photos, Mohs hardness and how to tell them apart — pair it with the guided identifier to narrow down an unknown specimen.

Mainly blue stones & crystals

Stones that also occur in blue

These minerals are best known in other colours but are also found in blue — so a blue specimen is possible, though the photo here may show a different shade. Confirm the colour of the actual stone, not just the species.

Frequently asked questions

What is the most popular blue crystal?
Sapphire is one of the best-known blue stones. Sapphire is a precious gemstone, a variety of the mineral corundum, consisting of aluminium oxide (α-Al2O3) with trace amounts of elements such as iron, titanium, cobalt, lead, chromium, vanadium, magnesium, boron, and silicon.
What crystals are blue?
Common crystals and gemstones that are blue include Sapphire, Lapis Lazuli, Agate, Turquoise, Topaz, Aquamarine Beryl, Corundum, Tanzanite. Some minerals best known in other colours — such as Diamond, Opal, Garnet — also occur in blue.
Are all blue gemstones rare or expensive?
No. Blue stones range from common, affordable minerals to rare gem-quality material. Value depends on the species, clarity and whether the colour is natural or treated.