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GIA Certified 47.02 Carat Emerald Cut Loose Aquamarine – Assay Jewelers
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Natural 2 Carat Pear Cut Tanzanite in 18K White Gold Teardrop Pendant Necklace – Assay Jewelers
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10.52 Carat Forest Green Tourmaline Emerald Cut 18K Gold Pendant Necklace – Assay Jewelers
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17.59 Carat White Opal & Diamond Halo Milgrain 18K White Gold Vintage Pendant – Assay Jewelers
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15.62 Carat Tanzanite, Peridot, Diamond Halo 18K White Gold Cluster Ring – Assay Jewelers
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Wendy Yue Opal & Sapphire Dragonfly 18K White Gold Dome Ring – Assay Jewelers
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GIA Certified 10.40 Carat Red Zircon & Diamond Ballerina Cocktail Ring – Assay Jewelers
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28 Carat Oval Cut Aquamarine 3 Row Tennis Bracelet – Assay Jewelers
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28 Carat Oval Cut Aquamarine 3 Row Tennis Bracelet
£13,157.00 GBP £15,817.00 GBP
2.52 Carat Oval Opal & Diamond Halo 14K White Gold Cathedral Ring – Assay Jewelers
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1.98 Carat Oval Opal & Diamond Halo Pave 14K White Gold Filigree Ring – Assay Jewelers
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18.06 Carat AAAA Tanzanite 18K White Gold Split Shank Ring – Assay Jewelers
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6.22 Carat Oval Aquamarine in Engraved 14K White Gold Edwardian Filigree Ring – Assay Jewelers
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14.24 Carat Pink Opal & Diamond 18K Gold Floral Cocktail Ring – Assay Jewelers
GIA Certified 11 Carat Triangle Cut Tsavorite Diamond 18K Gold Pendant Necklace – Assay Jewelers
15 Carat Oval Aquamarine & Diamond 18K White Gold Retro Dangle Earrings – Assay Jewelers
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25 Carat Aquamarine, Tourmaline, & Diamond 18K Gold Platinum Retro Bracelet – Assay Jewelers
Vintage 11.5 Carat Tsavorite & Diamond Filigree Tennis Bracelet – Assay Jewelers
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12.75 Carat Oval Spessartine Garnet & Diamond 18K Gold Wide Oval Link Bracelet – Assay Jewelers
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5.5 Carat Oval Kunzite & Diamond Channel 18K Gold Multi-Row Cocktail Ring – Assay Jewelers
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Omega 23mm Fire Black Opal Dial & Diamond Bezel 14K Gold Vintage Watch – Assay Jewelers
7.15 Carat Oval Aquamarine & Diamond Floral Filigree Platinum Ring – Assay Jewelers
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8.17 Carat Round Cut Peridot & Diamond 18K Gold Statement Ring – Assay Jewelers
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GIA Certified 17.16 Carat Lozenge Cut Rubellite Red Tourmaline Ring – Assay Jewelers
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1.26 Carat Aquamarine & Diamond in 18K White Gold Floral Statement Ring – Assay Jewelers
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GIA Certified 35 Carat Marcus & Co Australian Black Opal in 18K Gold Pendant – Assay Jewelers
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GIA Certified 18.61 Carat Pink Tourmaline & Floral Diamond Pendant Necklace – Assay Jewelers
GIA Certified 3 Carat No Heat Red Spinel & Diamond Cocktail Platinum Ring – Assay Jewelers
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Vintage GIA Certified Black Opal Mixed Cut Diamond Halo 14K Cocktail Ring – Assay Jewelers
Certified
Paraiba Tourmaline and Onyx in 14K Retro Drop Pendant Necklace – Assay Jewelers
GIA Certified 35 Carat Indicolite Tourmaline & Diamond 18K Gold Pendant – Assay Jewelers
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GIA Certified 10.47 Carat Green Oval Cut Tourmaline & Diamond in Platinum Cocktail Ring – Assay Jewelers
Certified
Oval Boulder Opal & 2 Carat Round Cut Diamond Halo 18K Gold Vintage Ring – Assay Jewelers
3.5 Carat Green Tourmaline 14K Gold Nugget Mens Ring – Assay Jewelers
Tiffany & Co. 6.5 Carat Pear Cut Green-Blue Tourmaline and Diamond Platinum Ring – Assay Jewelers
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3.50 Carat Black Opal & Diamond Halo Platinum Filigree Ring – Assay Jewelers
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GIA Cert. 8.45 Ct Black Opal Diamond Halo Platinum Ring – Assay Jewelers
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2.50 Carat Triangle Checkerboard Tsavorite & Diamond White Gold Statement Ring – Assay Jewelers
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Vintage 22K Gold Pink Tourmaline Bead Indian Chandelier Drop Earrings – Assay Jewelers
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GIA Cert. 5.52 Carat Rubellite and Diamond Halo Filigree Ring – Assay Jewelers
Certified
20.96 Carat Oval Light Pink Kunzite & Diamond in Platinum Filigree Cocktail Ring – Assay Jewelers
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GIA Certified 16.70 Carat Aquamarine and Diamond Vintage Cocktail Ring – Assay Jewelers
Certified
GIA Certified 6.40 Carat Blue Indicolite Tourmaline Vintage Retro Platinum Ring – Assay Jewelers
Certified
10.96 Carat Rubellite Tourmaline and Diamond Accent Platinum Ring – Assay Jewelers
10.08 Carat Black Opal with Baguette and Round Diamond Halo Cocktail Ring – Assay Jewelers
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36.10ct Cushion-Cut Kunzite Diamond 18K White Gold Necklace – Assay Jewelers
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Vintage 2 Carat Oval Black Opal & Diamond 3 Stone Platinum Ring GIA Certified – Assay Jewelers
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GIA Certified 15.07 Carat Emerald Cut Pink Tourmaline and Diamond Ring – Assay Jewelers
Certified
GIA Certified 3.55ct Pear Cut Tsavorite Diamond Cocktail Ring – Assay Jewelers
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Semi-Precious Gemstones

Our semi-precious gemstone collection showcases nature's most captivating colored stones, featuring rare specimens that rival precious gems in beauty and investment potential. This curated selection includes Australian black opals with vivid play-of-color, GIA-certified pink kunzite, premium aquamarine, exceptional tanzanite, and fine tourmaline in sought-after colors. Each piece represents the pinnacle of semi-precious gemstone quality, with many stones displaying museum-grade characteristics including superior clarity, intense color saturation, and remarkable size that places them among the world's finest examples of their species.

 

Every gemstone has been carefully selected for exceptional quality and authenticated by certified gemologists, with many pieces featuring GIA certification and documented origins from premier mining locations. From Australian Lightning Ridge black opals to Tanzanian tanzanite and Brazilian tourmaline, our collection emphasizes provenance and natural beauty. Expert craftsmanship showcases each stone in custom settings of 18K gold and platinum, often enhanced with diamonds to create heirloom-quality pieces that highlight the unique optical properties and natural characteristics of each gemstone variety.

 

For discerning collectors and investors, high-quality semi-precious gemstones from premium localities have demonstrated strong appreciation potential, particularly rare varieties like fine tanzanite, exceptional opals, and large aquamarine specimens. The combination of increasing scarcity from traditional mining sources, growing global appreciation for colored stones, and the finite nature of top-quality material creates compelling investment opportunities. With proper certification and documentation of origin, these pieces offer both aesthetic pleasure and the potential for significant value appreciation over time.

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