You are a heedless or negligent on gemstones and minerals of the unspeakable force, let me school you for a little bit about this thing against other gemstones
Actually Tanzanite is like Diamond, but Tanzanite is at least 1000x more valuable and more rare than Diamond, Diamonds have been minded in large quantities. You can't say that about Tanzanite.
If you compare it to Ruby, Sapphire or Emerald...well you can't, because those have been minded for 1,000s of years...Tanzanite only about 25 years!
These are the biggest reasons why this stone is very rare compared to others and why it's a perfect time to purchase Tanzanite now so it's obvious stupidity to say the gemstone is insignificant while it concurs noble ones.
Go to sleep