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 (15785)
Collapse Price

Collapse Make an Offer

Collapse Colour see all

Collapse Cut see all

Collapse Clarity see all

Collapse Condition

Collapse Type of Seller

Collapse Warranty

Collapse Payment

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


Black Opals

Prev  1 2 3 4 5 6 7 8 9 ... 395  Next » 
  • All Items (15785)
  • Auction (12116)
  • Buy Now (5873)
  • Classified (0)
Sort by

Priority Featured Listings

Featured Listings

R17,400.00 or Make an Offer
Cape Town
Closes 26 Mar 11:45
R129.00 or Make an Offer
Closes 11 Mar 13:30
R8,600.00 or Make an Offer
Cape Town
Closes 12 Mar 19:00
R129.00 or Make an Offer
Closes 6 Mar 15:00
Closes 6 Mar 18:00
R69.00 or Make an Offer
Closes 28 Feb 17:30
R26,000.00 or Make an Offer
Cape Town
Closes 28 Feb 19:30
Closes 28 Feb 13:30
Closes 15 Mar 23:00
1 to 40 of 15785 items.  
Prev  1 2 3 4 5 6 7 8 9 ... 395  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.