Spinel Gemstones

Explore our loose spinels by colour, with a separate group for listings described as cobalt. Compare individual photographs, cuts, carat weights and measurements, then review the treatment disclosure and available documentation for each stone.

Cobalt listings also appear under Blue. Colour alone does not establish cobalt content; ask about supporting laboratory information for the individual stone. Ask us about a spinel.

Find your colour.

Browse the colours described in our listings. Cobalt listings also appear under Blue; colour alone does not verify cobalt content.

29 products

4.82 ct Spinel — Heart Cut — listing image 14.82 ct Spinel — Heart Cut — listing image 3

4.82ct Natural Burmese Bluish Grey Spinel | VVS Heart Shaped Gem COBS28

$6,669.00
$6,669.00
6.71ct Natural Cobalt Spinel 6.71 ct Spinel — Cushion Cut — listing image 3

6.71ct Natural Cobalt Spinel | Massive Tanzanian Cushion | Untreated COBS27

$16,675.00
$16,675.00
2.31ct Natural Cobalt Spinel2.31ct Natural Cobalt Spinel | Flawless Blue Tanzanian Oval Cut COBS26

2.31ct Natural Cobalt Spinel | Flawless Blue Tanzanian Oval Cut COBS26

$8,337.00
$8,337.00
1.93 ct Spinel — Pear Cut — listing image 11.93 ct Spinel — Pear Cut — listing image 3

1.93ct Unheated Natural Pink Spinel | VVS1 Tanzanian Pear Cut COBS25

$1,025.00
$1,025.00
1.58 ct Spinel — Oval Cut — listing image 11.58ct Natural Red Mahenge Spinel – Unheated Oval Tanzanian Gem COBS24

1.58ct Natural Red Mahenge Spinel – Unheated Oval Tanzanian Gem COBS24

$2,565.00
$2,565.00
Natural Pink Spinel 3.6 carat3.60 ct Spinel — Pear Cut — listing image 3

3.60ct Natural Pink Spinel – VVS1 Pear Cut Tanzanian Collector's Gem COBS23

$3,336.00
$3,336.00
3.41ct Natural Pink Spinel 3.41ct Natural Pink Spinel – VVS2 Oval Cut Tanzanian Gemstone COBS22

3.41ct Natural Pink Spinel – VVS2 Oval Cut Tanzanian Gemstone COBS22

$3,336.00
$3,336.00
2.10ct Natural Blue Burmese Spinel2.10ct Natural Blue Burmese Spinel – VVS Pear Cut Untreated Gem COBS21

2.10ct Natural Blue Burmese Spinel – VVS Pear Cut Untreated Gem COBS21

$1,667.00
$1,667.00
Rare 4.20 Carat4.20 ct Spinel — Oval Cut — listing image 3

4.20ct Natural Pink Spinel | Rare Large Oval Tanzanian Gemstone COBS20

$5,130.00
$5,130.00
2.92 ct Spinel — Oval Cut — listing image 12.92ct Natural Pink Spinel – Untreated Oval Cut Tanzanian Gemstone COBS19

2.92ct Natural Pink Spinel – Untreated Oval Cut Tanzanian Gemstone COBS19

$1,667.00
$1,667.00
2.25ct Natural Flawless Pink Spinel2.25 ct Spinel — Cushion Cut — listing image 3

2.25ct Natural Flawless Pink Spinel – Rare Tanzanian Cushion Cut Gem COBS18

$1,154.00
$1,154.00
2.46 cts Pink Spinel from Tanzania:2.46ct Natural Unheated Pink Spinel – VVS1 Cushion Cut Tanzanian Gem COBS17

2.46ct Natural Unheated Pink Spinel – VVS1 Cushion Cut Tanzanian Gem COBS17

$1,282.00
$1,282.00
2.15 ct Spinel — Oval Cut — listing image 1

2.15ct Natural Blue Burmese Spinel – Untreated Oval Cut Gemstone COB16

$1,667.00
$1,667.00
1.12 ct Spinel — Cushion Cut — listing image 11.12ct Natural Mahenge Cobalt Spinel – Royal Blue Cushion Gemstone COBS16

1.12ct Natural Mahenge Cobalt Spinel – Royal Blue Cushion Gemstone COBS16

$1,025.00
$1,025.00
0.98 ct Spinel — Cushion Cut — listing image 10.98ct Natural Mahenge Cobalt Blue Spinel – Rare Cushion Cut Gem COBS15

0.98ct Natural Mahenge Cobalt Blue Spinel – Rare Cushion Cut Gem COBS15

$1,155.00
$1,155.00
2.08ct Internally Flawless Pink Spinel2.08 ct Spinel — Oval Cut — listing image 3

2.08ct Internally Flawless Pink Spinel – Natural Tanzanian Oval Gem COBS14

$1,347.00
$1,347.00
2.15 ct Spinel — Oval Cut — listing image 12.15ct Natural Blue Burmese Spinel – Untreated Oval Cut Gemstone COBS13

2.15ct Natural Blue Burmese Spinel – Untreated Oval Cut Gemstone COBS13

$1,667.00
$1,667.00
0.97 Carats Spinel from Africa0.97 ct Spinel — Oval Cut — listing image 3

0.97ct Natural African Pink Spinel – Flawless Oval Cut Gem COBS12

$180.00
$180.00
2.41ct Pink Gemstone2.41 ct Spinel — Oval Cut — listing image 3

2.41ct Natural Pink Spinel – Internally Flawless (IF) Tanzanian Oval COBS11

$1,410.00
$1,410.00
2.78 Carat Natural Pink Spinel2.78 ct Spinel — Oval Cut — listing image 3

2.78ct Natural Pink Spinel – VS1 Oval Cut Tanzanian Gemstone COBS10

$1,410.00
$1,410.00
1.04ct Blush-Pink African Spinel1.04ct Blush-Pink African Spinel – VVS Clarity Precision Oval Cut Gemstone COBS9

1.04ct Blush-Pink African Spinel – VVS Clarity Precision Oval Cut Gemstone COBS9

$437.00
$437.00
1.32ct Royal Blue Mahenge Spinel Rare 1.32ct Royal Blue Mahenge Spinel – VVS Cobalt Gemstone COBS8

Rare 1.32ct Royal Blue Mahenge Spinel – VVS Cobalt Gemstone COBS8

$1,501.00
$1,501.00
1.03 Carats Spinel from Africa1.03ct Natural African Pink Spinel – VVS Clarity Cushion-Cut COBS7

1.03ct Natural African Pink Spinel – VVS Clarity Cushion-Cut COBS7

$179.00
$179.00
2.75 Carat Rare Shield Cut Pink Spinel2.75 Carat Rare Cut Pink Spinel Shield Cut Tanzania COBS6

2.75 Carat Rare Cut Pink Spinel Shield Cut Tanzania COBS6

$1,538.00
$1,538.00
1.03 ct Spinel — Cushion Cut — listing image 1

1.03ct Natural Pink African Spinel – VVS Cushion Cut Gemstone COBS5

$180.00
$180.00
6.39ct Natural Pink Spinel | Heart Shaped Tanzanian VVS Gemstone6.39 ct Spinel — Heart Cut — listing image 3

6.39ct Natural Pink Spinel – Heart Shaped Tanzanian VVS Gemstone COBS4

$16,675.00
$16,675.00
3.79ct Natural Pink Spinel3.79ct Natural Pink Spinel – Flawless Oval Tanzanian Gemstone COBS3

3.79ct Natural Pink Spinel – Flawless Oval Tanzanian Gemstone COBS3

$3,463.00
$3,463.00
1.58ct Natural Black Spinel

1.58ct Natural Black Spinel – Cushion Cut Sri Lankan Gemstone COBS2

$257.00
$257.00
Vietnam Cobalt Spinel Rare color

2.08ct Natural Vietnam Cobalt Spinel - Loupe Clean Emerald Cut - COBS 01

$9,621.00
$9,621.00