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Century Gems Maintained by: Member id centurygems ( Feedback Score Of 13373) Our products include stones such as rubies,sapphires,emeralds,tanzanites, Benitoites,tourmalines,alexandrites,aquamarines,morganites,kunzites and peridots, etc. The origins of our stones are primarily from Tanzania, Thailand, Brazil, Mexico, United States, Russia, India, Afghanistan and Pakistan. Store search Enter your search keyword in titles & description Store categories Store home Amethyst (12) Purple Amethyst (12) Ametrine (3) Chrome Diopside (1) Citrine (18) Garnet (5) Red Garnet (5) Opal (657) Australian Rainbow Opal (13) Black Opal (30) Ethiopian Rainbow Opal (590) Ethiopian Welo Precious Opal (22) Precious Rainbow Opal (2) Pink Sapphire (2) Quartz (14) Lemon Quartz (10) Smokey Quartz (4) Quartz cat's eye (13) Ruby (13) Spinel (1) Red Spinel (1) Tanzanite (272) Cushion Cut (57) Emerald Cut (15) Marquise (12) Other Shapes (9) Oval Cut (96) Pear Cut (47) Round, Brilliant Cut (15) Trillion/Tria​ngle Cut (21) Tourmaline (1) Pink Tourmaline (1) Other (3) Hide all subcategories Display Hide gallery view View time left Store pages About the seller Shipping discounts $1.00 handling charges for each additional Item Store Newsletter! Add my Store to your Favorites and receive my email newsletters about new items and special promotions! General Interest Tanzanite Special New arrivals! 1.72 ct Natural Ethiopian Welo Black Opal Multi Color Play Faceted Pear Checker IGI Certified 1.40 ct AA Natural DBlock Tanzanite Oval Cut Deep Bluish Violet See all items Ending soon! 2.74 ct Natural Ethiopian Welo R... 5 Bids: $27.00 Time left:<1m See all items View: All Items | Auction | Buy It Now 1,015 results found in all categories View as:Gallery Sort by:Best Match Shipping to USA 2.74 ct Natural Ethiopian Welo Rainbow Opal Multi Color... 5 Bids: $27.00 Time left:<1m GIA Certified 6.40 ct AAA Natural DBlock Tanzanite Cush... $1,799.99 Time left:28d 13h 58m 4.61 ct Natural Ethiopian Welo Rainbow Opal Multi Color... $155.00 Time left:1d 22h 0m GIA Certified 18.66 ct AAAAAAA Natural D'Block Tanzanit..​. $7,999.99 Time left:9d 21h 16m GIA Certified 6.89 ct AAA Natural DBlock Tanzanite Cush... $1,899.99 Time left:28d 13h 45m Enlarge 1.17 ct A Magical Natural D'Block Tanzanite Oval Cut Li... Mined from Earth - IF Quality -Bid With 100% Confidence 3 Bids: $34.65 Time left:2m GIA Certified 14.18ct AAAA Natural D'Block Tanzanite Tr... $4,299.99 Time left:19d 12h 41m GIA Certified 42.74 ct Natural Ethiopian Welo Rainbow O... $8,599.99 Time left:16d 2h 40m GIA Certified 19.84 ct AAAAA Natural DBlock Tanzanite R... $6,499.99 Time left:19d 12h 49m GIA Certified 11.18 ct AAA Natural D'Block Tanzanite Cu... $2,999.99 Time left:19d 13h 0m Enlarge 2.82 ct Natural Ethiopian Welo Rainbow Opal Multi Color... 2 Bids: $56.20 Time left:4m GIA Certified 6.34 ct AAA Natural DBlock Tanzanite Oval... $1,749.99 Time left:28d 13h 43m GIA Certified 8.83 ct AAAA Natural DBlock Tanzanite Cus... $2,699.99 Time left:22d 12h 34m GIA Certified 19.52 ct AAAA Natural D'Block Tanzanite O... $5,999.99 Time left:19d 12h 34m GIA Certified 7.15 ct AAA Natural DBlock Tanzanite Oval... $1,999.99 Time left:28d 13h 49m 2.80 ct Natural Ethiopian Welo Rainbow Opal Multi Color... 3 Bids: $27.22 Time left:6m GIA Certified 8.09 ct AAA Natural DBlock Tanzanite Pear... $2,299.99 Time left:22d 12h 44m GIA Certified 4.84 ct AAA Natural DBlock Tanzanite Pear... $1,399.99 Time left:28d 13h 57m GIA Certified 7.62 ct AAA Natural DBlock Tanzanite Pear... $2,099.99 Time left:28d 13h 41m GIA Certified 5.02 ct AAA Natural DBlock Tanzanite Oval... $1,399.99 Time left:28d 13h 47m Enlarge IGI Certified 1.10 ct AA Natural D'Block Tanzanite Marq... Mined from Earth - IF Quality - IGI Certificate is FREE 4 Bids: $87.60 Time left:8m GIA Certified 7.49 ct AAA Natural DBlock Tanzanite Cush... $2,099.99 Time left:28d 13h 54m GIA Certified 31.07 ct AAAAA Natural D'Block Tanzanite ... $9,999.99 Time left:17d 2h 13m IGI Certified 6.76 ct AAAA Natural DBlock Tanzanite Cus... $1,749.99 Time left:19d 16h 52m Enlarge 1.11 ct Natural Ethiopian Welo Rare Black Opal Multi Co... 1 Bid: $9.99 Time left:10m GIA Certified 9.65 ct AAA Natural DBlock Tanzanite Roun... $2,699.99 Time left:22d 12h 36m GIA Certified 17.05 ct AAAA Natural D'Block Tanzanite C... $5,299.99 Time left:19d 12h 37m GIA Certified 8.49 ct AAA Natural D'Block Tanzanite Cus... $2,399.99 Time left:22d 12h 37m GIA Certified 11.82 ct AAA Natural D'Block Tanzanite Cu... $3,299.99 Time left:22d 13h 2m 2.10 ct Natural Ethiopian Welo Rainbow Opal Multi Color... 3 Bids: $20.85 Time left:12m IGI Certified 6.07 ct AAAA Natural DBlock Tanzanite Rec... $1,499.99 Time left:19d 17h 3m GIA Certified 8.77 ct AAA Natural DBlock Tanzanite Oval... $2,399.99 Time left:22d 13h 8m GIA Certified 12.66 ct AAA Natural D'Block Tanzanite Cu... $3,499.90 Time left:19d 12h 52m IGI Certified 8.32 ct AAAA Natural DBlock Tanzanite Cus... $2,499.99 Time left:19d 16h 47m Enlarge IGI Certified 1.31 ct AAA Natural DBlock Tanzanite Pear... Mined from Earth - IF Quality - IGI Certificate is FREE 6 Bids: $108.16 Time left:14m IGI Certified 6.59ct AAA+ Natural DBlock Tanzanite Tril... $1,499.99 Time left:19d 17h 1m GIA Certified 7.69 ct AAA Natural DBlock Tanzanite Pear... $2,099.99 Time left:28d 13h 33m GIA Certified 8.05 ct AAAA Natural D'Block Tanzanite Cu... $2,399.99 Time left:22d 12h 39m IGI Certified 6.67ct AAA Natural DBlock Tanzanite Pear ... $1,299.99 Time left:19d 16h 57m Enlarge 1.33 ct Natural Ethiopian Welo Rainbow Opal Multi Color... 2 Bids: $25.49 Time left:16m GIA Certified 15.05 ct AAA Natural D'Block Tanzanite Pe... $4,199.99 Time left:19d 13h 17m GIA Certified 36.63 ct Natural Ethiopian Welo Rainbow O... $5,999.99 Time left:16d 2h 56m GIA Certified 5.32 ct AAA Natural DBlock Tanzanite Oval... $1,499.99 Time left:28d 13h 39m GIA Certified 10.46ct AAA Natural DBlock Tanzanite Cush... $2,899.99 Time left:22d 12h 32m 2.42 ct Natural Ethiopian Welo Rainbow Opal Multi Color... 4 Bids: $24.50 Time left:18m GIA Certified 18.42 ct AAA Natural D'Block Tanzanite Ov... $4,999.99 Time left:19d 13h 3m GIA Certified 9.32 ct AAA Natural DBlock Tanzanite Oval... $2,599.99 Time left:22d 12h 29m GIA Certified 8.15 ct AAA Natural DBlock Tanzanite Pear... $2,299.99 Time left:22d 12h 28m Why don't we show the price? 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