California Gemstones Auction on Feb 20, 2026 by California Gemstones in CA
Natural Neon Blue Paraiba Tourmaline  3 ct Emerald cut from BrazilNatural Amethyst 1.98 ct Octogon cutINTENSE Royal Blue Spinel 26.05 Oval Cut PAIR
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Oceanside, CA, United States
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California Gemstones

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Unique Purple Amethyst 9.5 Ct Kite Cut: cut into a unique, geometric kite shape, offers a striking, modern look with a large table, Sourced from Brazil, this high-clarity (loupe clean) stone features a deep violet color and excellent cut,
18001: Unique Purple Amethyst 9.5 Ct Kite CutEst. $1,050-$1,530$10
Natural Flawless Mogok Red Ruby Oval Cut 8 Ct: a rare, high-quality gemstone originating from Myanmar's famed Mogok Valley. It features a vivid red hue—often described as Pigeon's Blood—with excellent, eye-clean clarity and an oval cut,
18028: Natural Flawless Mogok Red Ruby Oval Cut 8 CtEst. $1,750-$1,830$25
Diamond and Emerald Earrings: Beautiful pair of earrings from Great Britain.
18037: Diamond and Emerald EarringsEst. $550-$600$10
Natural Flawless Mogok Red Ruby Oval Cut 8 Ct: a rare, high-quality gemstone originating from Myanmar's famed Mogok Valley. It features a vivid red hue—often described as Pigeon's Blood—with excellent, eye-clean clarity and an oval cut,
18042: Natural Flawless Mogok Red Ruby Oval Cut 8 CtEst. $1,750-$1,830$25
Colombian Green Emerald 2.20 Ct Round Cut Pair: tures a, vibrant deep green hue, certified by GGI for authenticity. Renowned for high-quality, these matched, eye-clean to slightly included stones are ideal for stud earrings or bespoke jewelry.
18043: Colombian Green Emerald 2.20 Ct Round Cut PairEst. $1,100-$1,238$30
Natural Red Ruby 6.9 Ct Pear Cut Mozambique: Characterized by a vibrant to deep red color and, often, eye-clean clarity. Sourced from Mozambique—a premier source for modern, high-quality rubies—this gem is generally heat-treated to improve
18097: Natural Red Ruby 6.9 Ct Pear Cut MozambiqueEst. $1,350-$1,650$10
Natural Amethyst 2.63 ct Oval cut: 10 x 7.8 x 6.1mm a vibrant purple hue,cut into an oval shape using a mixed brilliant cut to maximize sparkle.
18616: Natural Amethyst 2.63 ct Oval cutEst. $30-$100$1
Natural Ceylon Blue Sapphire 10.44 Ct Oval Cut: 15.27 x 11.62 x 7.88 a rare, high-carat gemstone, often featuring a vibrant, vivid blue to medium-blue hue, typical of the region. These stones are known for excellent transparency, eye-clean
18617: Natural Ceylon Blue Sapphire 10.44 Ct Oval CutEst. $1,823-$2,000$25
Natural Amethyst 2.73 ct Round cut: 10 x 3.9mm Features a dazzling centerpiece with vibrant color and sparkle.
18630: Natural Amethyst 2.73 ct Round cutEst. $55-$135$10
Natural Peridot 1.01 ct Trillion cut: 6.9 x 6.8 x 3.5mm these stones feature three curved sides, high brilliance, "eye-clean" clarity. They are untreated, offering a vivid, natural, and sparkly appearance.
18639: Natural Peridot 1.01 ct Trillion cutEst. $200-$300$10
Natural Amethyst 5.59 ct round cut: 12 x 7.6 a substantial, vibrant purple gemstone often featuring deep, rich hues with red or pink flashes.
18649: Natural Amethyst 5.59 ct round cutEst. $25-$140$10
Stunning Green Emerald Oval Cut 4 Ct from Colombia: 11 x 9 x 5mm intense, vivid green saturation with slight bluish undertones, often described as having excellent, bright, and lively, "gardens" (jardín). These, highly sought-after gems often
18650: Stunning Green Emerald Oval Cut 4 Ct from ColombiaEst. $16,500-$17,000$50