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California Gemstones

California Gemstones

California Gemstones

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San Diego, CA

USA

7609942006Send Message Consign Item

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Upcoming Auctions from California Gemstones

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Bidder Reviews for California Gemstones (2)

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Latest ReviewSee All

Nicole
Napa, CA

4

Mar 05, 2026

Good communication and nice stones

I purchased some nice stones that came as described, some with GGI certificates. Seller has been good at communication, and quickly offered to refund when some necklaces were not as expected. I will be following this seller.

1.6ct Oval Cut VVS Red Spessartite Garnet from Nigeria

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Past Auctions from California Gemstones

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Natural Blue Topaz 1.8ct each Emerald Cut Top Quality VVS 8x6mm PAIR

Diamond Heart Cut VVSI D color 1 Ct from South Africa

Emeralds 5 pcs 1.58 ct Pear cut NO Reserve

Saturday Last Day of February Auction

California Gemstones

Oceanside, CA, US

Auction Ended

Natural London Blue Topaz 2.13 ct Marquise cut

Friday February 27th 1pm

California Gemstones

Oceanside, CA, US

Auction Ended

Flawless Blue Sapphire Oval Cut 9.93 ct from Brazil

Beautiful Stone Pigeon Blood Ruby 7.3ct Oval Cut 9mm from Mozambique

BIIIIGGGG!! 140ct Tsavorite Cushion Cut NO RESERVE

Fantastic February 26, CLEARANCE

California Gemstones

Oceanside, CA, US

Auction Ended

Natural Blue Tanzanite Trillion Cut AAA Quality 9.50 Ct

Rare Red Painite Oval Cut 10+ Ct from Burma

Dark Green Columbian Emeralds Oval Cut 19.6ct PAIR

February 23 Manic Monday

California Gemstones

Oceanside, CA, US

Auction Ended

Natural Ceylon Blue Sapphire 10.44 Ct Oval Cut

Unique Purple Amethyst 9.5 Ct Kite Cut

Dual Strand Emerald Necklace with matching earings

Fantastic February Auction

California Gemstones

Oceanside, CA, US

Auction Ended

Natural ROYAL Blue Sapphire Sri Lanka Asscher Cut 15.3 ct from Sri Lanka

Luxury Set Earrings & Necklace White Gold, 15 Emerald & Diamond

Platinum Sapphire and Diamond Tennis Bracelet 3mm vvs

Valentine's Day

California Gemstones

Oceanside, CA, US

Auction Ended

Mozambique Dark Red Ruby Oval Cut 9.70 ct

Beautiful, Brilliant Cubic Zirconia Emerald Cut 5.19 ct

Beautifully Brilliant oval cut Ruby 11.94 ct

Loose Gems from All over the World

California Gemstones

Oceanside, CA, US

Auction Ended

Natural Flawless Mogok Red Ruby Oval Cut 8 Ct

Green Emerald Zambian 30.8 tcw Radiant Cut 6 Pieces

Flawless Natural Mogok Pink Ruby 2.87 Ct Oval Cut

January 31st

California Gemstones

Oceanside, CA, US

Auction Ended

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Record Auction Results for California Gemstones

Certified Natural Neon Blue Paraiba Tourmaline Asscher cut A+ 10.0 Ct Brazil: Value is related to confirmed copper content (for true Paraiba) and lab certification (GIA, EGL). Its "Neon Blue" color, large Asscher cut, and A+ clarity are premium attributes, but its true worth hi

2026

Certified Natural Neon Blue Paraiba Tourmaline Asscher cut A+ 10.0 Ct Brazil

California Gemstones

7 ctw Diamond and Emerald Tennis Bracelet: a luxurious, high-carat jewelry piece featuring approximately 7 carats of emerald-cut or princess-cut stones. Set in 14K white gold, offering a sophisticated, durable design with intense green color a

2026

7 ctw Diamond and Emerald Tennis Bracelet

California Gemstones

Colombian Green Emerald 5 ct Trillion Cut: 11 x 11 x 8 mm. a deep, vivid green hue, with cooler, slightly bluish undertones compared to Colombian stones. These stones are renowned for high clarity, excellent polish, and a "strong glow," making

2026

Colombian Green Emerald 5 ct Trillion Cut

California Gemstones

Stunning Natural Red Painite 3.85 Ct Oval cut: An exceptionally rare, top-quality Burmese gemstone featuring a brilliant oval cut. Sourced from Mogok, Myanmar, this faceted, eye-clean stone boasts a vibrant, deep red color.

2026

Stunning Natural Red Painite 3.85 Ct Oval cut

California Gemstones

Natural Neon Blue Paraiba Tourmaline 3 ct Emerald cut from Brazil: 10.51 x 7.69 x 5.33mm an exceptionally rare, investment-grade gemstone known for its intense "neon" blue-green color caused by copper. Originating from the state of Para?ba, these gems are highly cove

2026

Natural Neon Blue Paraiba Tourmaline 3 ct Emerald cut from Brazil

California Gemstones

Luxury Set Earrings & Necklace White Gold, 15 Emerald & Diamond: This elegant jewelery set features a lab-created green emerald & diamond necklace and earrings. The set is crafted in an white gold finish, adorned with lab grown diamonds. The necklace has a 46cm len

2026

Luxury Set Earrings & Necklace White Gold, 15 Emerald & Diamond

California Gemstones

Royal Blue Sapphire: A 10.03-carat royal blue sapphire with an oval cut is a significant, high-value gemstone, originating from Sri Lanka and characterized by its deep, intense blue color. This stones exhibit "eye-clean"

2026

Royal Blue Sapphire

California Gemstones

Royal Blue Sapphire 12ct Oval Cut: a substantial, rare statement piece, often associated with luxury, such as the famous Diana/Kate Middleton 12-carat Ceylon ring. These sapphires, often sourced from Sri Lanka or Madagascar, display vi

2026

Royal Blue Sapphire 12ct Oval Cut

California Gemstones

Exquisite Colombian Emerald VVS Emerald Cut 11ct: an 11-carat Colombian emerald with an emerald cut is a rare, high-value, and deeply saturated gemstone, often commanding premium price.Colombia, renowned for producing the most desirable emeralds with

2026

Exquisite Colombian Emerald VVS Emerald Cut 11ct

California Gemstones

Montana Green Sapphire Pear Cut 7.65 Ct: Natural Green Pear Cut Montana Sapphire certified, unheated loose gem, featuring Montana's unique pastel to blue-green colors in a teardrop shape, offering excellent durability (Mohs 9) and clarity (l

2026

Montana Green Sapphire Pear Cut 7.65 Ct

California Gemstones

Natural Colombian Green Emerald Round Cut 7 mm 15 Pcs: vibrant color, excellent cut, and clarity with 'garden' inclusions, ideal for creating jewelry like rings or earrings.

2026

Natural Colombian Green Emerald Round Cut 7 mm 15 Pcs

California Gemstones

BIIIIGGGG!! 140ct Tsavorite Cushion Cut NO RESERVE: characterized by its intense, vivid green color, exceptional brilliance, and durable nature. As a member of the garnet family, this stone is mined in Kenya) and is known for having an electric green h

2026

BIIIIGGGG!! 140ct Tsavorite Cushion Cut NO RESERVE

California Gemstones

Rare Natural Royal Blue Sapphire Excellent Round Cut 8.66 ct Ceylon: 8.66 Ct Rare Natural GIE Certified Royal Blue Sapphirea significant, high-value gemstone known for its deep, vivid blue color from Sri Lanka, unheated, boasting superior clarity and brilliance, making

2026

Rare Natural Royal Blue Sapphire Excellent Round Cut 8.66 ct Ceylon

California Gemstones

1.80 Ct Natural White Diamond Princess Cut 7 mm VVS1 D Grade: a square princess cut measuring roughly 7x7 mm, with VVS1 clarity and top-tier D color. It offers exceptional brilliance and a colorless, eye-clean appearance,

2026

1.80 Ct Natural White Diamond Princess Cut 7 mm VVS1 D Grade

California Gemstones

White Diamond Melee Round Cut 2 mm VVS1 D Grade 4 tcw rom South Africa: 4 Total Carat Weight (tcw) parcel of 2mm Round Cut White Diamonds (VVS1 D Grade, South African origin) is characterized as a premium, investment-grade, or "fine" jewelry. These are generally natural,

2026

White Diamond Melee Round Cut 2 mm VVS1 D Grade 4 tcw rom South Africa

California Gemstones

Flawless Red Ruby Round Cut 6 Ct 9x5 mm Pair from Mozambique: Flawless Red Ruby Round Cut 6 Ct 9x5 mm Pair from Mozambique

2026

Flawless Red Ruby Round Cut 6 Ct 9x5 mm Pair from Mozambique

California Gemstones

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