Cobalt Spinel

Natural Cobalt Spinel Weight: 1.53 Carats Dimension: 7.00 x 6.47 x 4.72 Mm Shape: Oval Origin: Tanzania Treatment: None Certificate: AIG Certified

1.98 Carat Natural Blue Cobalt Spinel from Burma Dimension: 7.68 x 6.35 x 5.28 mm Shape: Oval Cut Weight: 1.98 Carat No Heat GIL Certified Report No: St02022102151324

Spinels, including cobalt spinel, are relatively hard gemstones, scoring 7.5 to 8 on the Mohs scale of hardness.

Spinels, including cobalt spinel, are relatively hard gemstones, scoring 7.5 to 8 on the Mohs scale of hardness.

Spinels, including cobalt spinel, are relatively hard gemstones, scoring 7.5 to 8 on the Mohs scale of hardness.

Spinels, including cobalt spinel, are relatively hard gemstones, scoring 7.5 to 8 on the Mohs scale of hardness.

This 14 karat white gold eternity band features fifteen round french set bright blue natural cobalt spinels with a total weight of 4.91 carats.

Here is a super rare natural Cobalt Spinel and diamond ring. The certified cobalt Spinel is 2.23Cts.

Natural Cobalt blue Spinel Loose gemstone Laboratory certified GFCO Gemstone Color: Cobalt Blue Gemstone Type: Spinel Gemstone size: 12.08x10.20x6.60 mm Cut Grade: Excellent Clarity...

Natural Spinel Loose gemstone Laboratory certified GFCO Gemstone Color: Cobalt Blue Gemstone Type: Spinel Gemstone size: 8.96x6.58x4.72 mm Cut Grade: Excellent Clarity/Grade: Loupe ...

Identification: Natural Vietnamese Cobalt Blue Spinel • Carat: 0.54 carats • Shape: Oval • Measurements: 6.17 x 4.51 x 2.78 mm • Cut: Brilliant/ Modified Brilliant • Color: Blu...

Spinels, including cobalt spinel, are relatively hard gemstones, scoring 7.5 to 8 on the Mohs scale of hardness.

This 6.08 carat cobalt-blue spinel displays the vivid, highly saturated blue colour that has made cobalt-bearing spinel one of the most sought-after gemstones among collectors and fi...

Stock Number: EG-910239716-22081712-EY --Certification Details:-- Laboratory: GIA Report Number: 2225462940 Shape: Cushion Cutting Style: Crown: Modified Brilliant Cut Cutting Style...

Untreated and completely **natural**, this cobalt blue spinel showcases the gem’s authentic charm and rarity, as cobalt-colored spinels are among the most sought-after varieties in t...

Natural Cobalt Blue Spinel gemstone from Tanzania! GFCO Laboratory certified Gemstone Color: VIVID Blue Gemstone Type: Spinel Gemstone size: 9.02x7.71x5.91mm Cut Grade: Very Good Cl...

Natural Cobalt Blue Spinel Loose gemstone Origin Tanzania!

Weight 1.20 carat Dimensions 6.3x6.0x3.9mm Treatment None Origin Tanzanian Clarity Eye Clean Shape Cut Emerald The 1.20 Carat Natural Loose Cobalt Blue Spinel is a captivating...

GIL Certified 2.12 carat Cobalt Blue Spinel from Burma No Heat Dimension: 7.00 x 7.56 x 4.79 mm Weight: 2.12 carat Cut: Octagonal

The captivating cobalt blue hue of the Spinel evokes the serenity of a deep ocean, drawing admiration from every angle.

A rare, collector level cobalt blue spinel from Mahenge, Tanzania, offered loose and unmounted by Merkaba Jewelry Beverly Hills.

This diamond by the yard style necklace features bezel set bright blue round spinels alternating with natural round bezel set diamonds set in 14 karat white gold. Lobster clasp closu...

Blue Spinel 3.04 carats with Diamond 0.34 carat Ring set in 18 Karat White Gold Settings (GFCO Gem Lab, Switzerland) Width: 0.9 cm Length: 0.7 cm Ring Size: 54 Total Weight: 6.19...

It features 12.23 carat total weight in bright cobalt blue spinels set in 18 karat white gold. Wear alone for a statement or layer with your other favorite bracelets.

1.16 Carat Natural Cobalt Blue Spinel from Sri Lanka (Ceylon) Dimension: 6.86 x 5.38 x 3.54 mm Weight: 1.16 Carat Shape: Cushion Cut No Heat GIL Certified Report No: STO2023010552113

Hand-blown glass cobalt beads and black spinel beads are hand strung in this statement piece from the Early 1950s.