Gem Shop | Gemstones

View the Gemstone Selling Guide for guidelines when buying and selling gemstones.

Browse Categories

  1. All categories
  2. Gemstones & Rocks
  3. Semi-Precious Gems (14853)
Collapse Price

Collapse Clarity see all

Collapse Colour see all

Collapse Cut see all

Collapse Condition

Collapse Type of Seller

Collapse Warranty

Collapse Payment

  • Carats
  • Clarity
  • Colour
  • Cut
  • Sellers
Sponsored Links


Black Opals

Prev  1 2 3 4 5 6 7 8 9 ... 372  Next » 
  • All Items (14853)
  • Auction (12175)
  • Buy Now (2678)
  • Classified (0)
Sort by

Priority Featured Listings

Cape Town
Ends 1 Jun 13:00
Violet(Intense)  Oval  Natural
Cape Town
Ends 24 May 23:45
Cape Town
Ends 3 Jun 12:00
More than 10  Eye Clean  Blue(Intense)  Oval  Natural
Cape Town
Ends 31 May 09:15
More than 10  Eye Clean  Violet(Vivid)  Cushion  Natural
Cape Town
Ends 3 Jun 13:00
Ends 12 Jun 09:00
1 to 40 of 14853 items.  
Prev  1 2 3 4 5 6 7 8 9 ... 372  Next » 

Sponsored Links


Shop for a variety of gemstones online on bidorbuy. Bidorbuy has a wide range of gemstones available to buy, whether you are a gemologist, jeweller, investor, collector or private buyer. You can buy and shop for quality precious gems such diamond, ruby, sapphire, emerald, Alexandrite and Tanzanite stones. Diamonds of colour D, E, F, G, H, I, J, K, L and M and over are available. Find Yellow, Brown, Clear, Blue, Pink and Red diamonds. You will find flawless stones on our site (F and IF) - as well as VVS1, VVS2, VS1, VS2, SI1, SI2 and I clarities - and maybe even a Pink Star Diamond. Jewels on bidorbuy come in a range of cuts - Asscher, cushion, heart, emerald, marquise, oval, pear, princess, radiant and round. Buy the most brilliant and vibrant blue and purple tanzanite and sapphires also - Bidorbuy has violetish blue and blueish violet Tanzanite. You can buy tanzanite of vB or Bv 5, 4, 3 or lower. Find Eye Clean - EC - Tanzanite or Slightly, Moderately or Heavily Included Tanzanite. We have different carats available from 0.1 carats to stones over 5 carats. New investment stones like Demantoid garnets are also available. Maybe you will be lucky and find something very rare such as jeremejevite, blue garnet, black opal, taaffeite, poudretteite, benitoite, padparasha sapphires, musgravite, red beryl, paraiba tourmaline, jadeite, grandidierite or even a red diamond.