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Blue Gemstones

Blue gemstones from the Otzera collection — sapphire, aquamarine and beyond, each individually evaluated on the Otzera 50 scale.

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1.20 ct Brazilian Blue-Green Tourmaline

1.20 ct Brazilian Blue-Green Tourmaline

$760.00
4.06 ct Ceylon Blue Sapphire — GIA Origin Report

4.06 ct Ceylon Blue Sapphire — GIA Origin Report

$8,900.00
2.98 ct Namibian Blue-Green Tourmaline

2.98 ct Namibian Blue-Green Tourmaline

$1,290.00
9.05 ct Natural Nigerian Aquamarine

9.05 ct Natural Nigerian Aquamarine

$3,150.00
1.57 ct Unheated Sri Lankan Purple Sapphire

1.57 ct Unheated Sri Lankan Purple Sapphire

$1,560.00
2.32 ct Green Round Brilliant Sapphire

2.32 ct Green Round Brilliant Sapphire

$890.00
3.22 ct Blue Emerald-Cut Aquamarine

3.22 ct Blue Emerald-Cut Aquamarine

$965.00
2.14 ct Blue Sapphire

2.14 ct Blue Sapphire

$749.00
2.30 ct Blue Sapphire

2.30 ct Blue Sapphire

$350.00
2.41 ct Unheated Australian Blue Sapphire - GIA Certified

2.41 ct Unheated Australian Blue Sapphire - GIA Certified

$2,150.00
1.27 ct Unheated Cambodian Royal Blue Sapphire

1.27 ct Unheated Cambodian Royal Blue Sapphire

$2,450.00

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Otzera Rated Gemstones
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Products

0.51 ct Natural Muzo Colombian Emerald

0.51 ct Natural Muzo Colombian Emerald

$815.00
0.79 ct Myanmar Red Spinel

0.79 ct Myanmar Red Spinel

$1,190.00
1.00 ct Unheated Natural Ruby

1.00 ct Unheated Natural Ruby

$1,600.00
1.15 ct Natural Pinkish Red Ruby from Sri Lanka — Dual Certified

1.15 ct Natural Pinkish Red Ruby from Sri Lanka — Dual Certified

$2,250.00