Nafco Gems

888.908.8574

NAFCOgems

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Unset small round grossular garnet melee in a light green hue are available. These gems are exceptionally brilliant and possess a dazzling, untreated appearance. The grossular garnets vary in color, ranging from very light green to a refreshing minty gree

Round Untreated / Unheated Mint Green Grossular Garnet Melee 2.5 mm+

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Natural untreated round organic color gray sapphire. This super brilliant Tanzanian sapphire is from the Umba River region of Africa. The color of this well cut unheated sapphire is very unique yet very typical of the Umba region as it has notes of

Loose Round Untreated / Unheated Gray Sapphire (6.8 mm)

6.8 x 6.8 x 4.4

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Natural untreated oval neutral color very pale yellow sapphire. This super brilliant Tanzanian sapphire is from the Umba River region of Africa. The color of this well cut unheated sapphire is very unique yet very typical of the Umba region as it h

Loose Untreated Very Light Yellow Sapphire - Unheated 1.50+ Umba Oval Sapphire from Tanzania

8.2 x 6.2 x 4.3

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Very brilliant oval untreated yellow sapphire. This light yellow sapphire is well cut and has lots of life. Super Sparkly diamond like yellow sapphire from Umba.

Loose Untreated Yellow Sapphire Oval- Lively Light Yellow Oval Sapphire

9 x 7 x 5.4

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Natural untreated marquise greige sapphire. This bright unheated Tanzanian sapphire is from the Umba River region of Africa. The color of this well cut unheated gray sapphire is very unique yet very typical of the Umba region as it has notes of muted past

Loose Marquise Untreated Greige Gray Sapphire from Umba

11 x 5.5 x 4.3

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Untreated light gray sapphire freeform slab. This natural Umba sapphire hexagon slice in the gray tones is fully high polished and has a beveled facet girdle. A one-of-a-kind natural sapphire.

Loose Umba Untreated Light Gray Sapphire Hexagon Slab/Slice

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Not finding what you are looking for or have a special request? Since Our inventory of wholesale loose gemstones is vast we have much more then what you see online. Please give us a call at 888-908-8574 or Click Here to Contact Us