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All Gemstones, Shape Octagon


Buy Natural Loose Gemstones Online – 4,000+ Gemstones Available

Browse a curated collection of natural loose gemstones sourced from renowned gem producing regions around the world. Gempiece offers a wide selection of gemstones suitable for collectors, jewelers and gemstone enthusiasts.

Explore over 4,000 gemstones with detailed specifications, professional macro photography and high-resolution video, allowing buyers to closely examine color, brilliance and inclusions before purchase. With secure payment gateways and worldwide shipping, Gempiece offers a trusted place to buy gemstones online.

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Total Products : 53
SKU: GEM26074114
0.71 carats fanta orange natural spessartite garnet octagon 5x3 mm nigeria..
$50.00
SKU: GEM26074111
1.55 carats forest green natural tourmaline octagon 6x5 mm nigeria..
$48.00
tourmaline  6.35cts - 11x11mm tourmaline  6.35cts - 11x11mm
SOLD - Out Of Stock
SKU: GEM26014078
With a Honey Green hue, this Green Tourmaline reflects strong color depth and natural vibrancy. Durability and stable color make it reliable for frequent use. Valued across different countries, it holds strong presence in gemstone trade. This 6.35 carat Green Tourmaline cut in Octagon displays a Hon..
$109.00
SKU: GEM26014065
This Green Tourmaline features a Vivid Green color with even tone and smooth finish. Its balanced color and clarity support regular wear. A globally recognized gemstone with steady presence in the jewelry industry. A well-cut Octagon Green Tourmaline weighing 1.32 carats shows a Vivid Green tone wit..
$32.00
SKU: GEM26014063
This Green Tourmaline presents a Baby Mint Green color with strong depth and clear definition. Reasonable value combined with natural beauty supports regular use. Known across international markets for its steady demand and acceptance. At 1.45 carats, this Octagon cut Green Tourmaline presents a Bab..
$50.00
SKU: GEM26014053
This Pink Tourmaline exhibits a Sweet Pink hue with fine scintillation and precise faceting. A dependable gemstone option for those seeking accessible quality. A gemstone with strong international appeal, suitable for various jewelry uses. With a Octagon cut, this Pink Tourmaline weighs 1.20 carats ..
$54.00
SKU: GEM25073841
This Green Tourmaline exhibits a Light Baby Green tone with good transparency and a natural appearance. A balance of durability and visual quality makes it suitable for daily wear. Widely accepted in global jewelry trade, this gemstone remains consistently relevant. This Green Tourmaline gemstone we..
$76.00
sphalerite  33.22cts - 17x12mm sphalerite  33.22cts - 17x12mm
Rare
SKU: GEM25043769
This Sphalerite belongs in a refined collection, meeting the standard expected of high jewelry. It is defined by the consistency and authenticity required of fine natural stones. This 33.22 carat Octagon-cut Sphalerite reveals a Sunset Orange hue originating from Spain and measuring 17.25 x 17.08 x ..
$1,649.00
SKU: GEM25033733
This natural Spinel shows a Teal Blue hue, suited for versatile jewelry designs. Its consistent color supports everyday wear. Appreciated worldwide by collectors and jewelry designers. A Octagon Spinel weighing 1.23 carats displays a Teal Blue tone with clarity VS and treatment: no treatment at all,..
$109.00
SKU: GEM25033716
This Bi-color Tourmaline reflects a Honey to Green color with even distribution and visual richness. A versatile gemstone with consistent color and clarity. Commonly used in jewelry worldwide, it holds relevance in both local and international trade. Cut in Octagon, this Bi-color Tourmaline weighing..
$54.00
SKU: GEM25023599
This Pink Tourmaline features a Sweet Pink color with even tone and smooth finish. Balanced color and clarity support its everyday suitability. Used globally in jewelry, reflecting its broad demand. A Octagon Pink Tourmaline weighing 1.25 carats shows a Sweet Pink tone with origin Nigeria and lot ty..
$43.00
SKU: GEM25023580
This Green Tourmaline offers a balanced look that works well for daily wear while maintaining a refined appearance. The cutting is practical, making efficient use of the material without unnecessary weight or depth. With 1.98 carats and a Octagon cut, this Green Tourmaline displays Baby Green with F..
$87.00
Showing 1 to 12 of 53 (5 Pages)
Natural Loose Gemstones Collection

Browse our extensive selection of natural loose gemstones sourced from renowned gem producing regions around the world. Our inventory features over 4,000 gemstones carefully selected for collectors, jewelers and gemstone enthusiasts seeking quality gemstones for jewelry design, collecting or investment.

Each gemstone is individually photographed using professional macro photography and high-resolution video so buyers can closely examine color, brilliance and inclusions before purchase. Detailed specifications including weight, dimensions, origin and treatments provide transparent information for selecting the right gemstone.

Popular Gemstone Categories

Explore popular gemstone categories such as Ruby, Sapphire, Spinel, Garnet, Tourmaline, Zircon, Peridot, Moonstone and Topaz.

Explore these gemstone categories to discover a wide range of colors, shapes and sizes available in our collection. Whether you are searching for a rare collector stone or a gemstone for custom jewelry, Gempiece offers a carefully curated selection available for worldwide delivery.

Why Buy Gemstones from Gempiece

Gempiece specializes in natural loose gemstones selected for their beauty, rarity and authenticity. Many gemstones in our inventory are untreated and sourced from trusted suppliers and mining regions around the world, offering buyers a transparent and reliable place to explore fine gemstones.

✓ Natural Gemstones
✓ 4,000+ Gemstones Available
✓ Worldwide Shipping
✓ 14-Day Return Policy
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Learn About Gemstones

Visit our Gemopedia to learn about gemstone origins, colors, rarity and characteristics. These gemstone guides help collectors, jewelers and enthusiasts understand gemstone quality, treatments and value before selecting the perfect gemstone.

Popular gemstone guides: Ruby Guide | Star Ruby | Burmese Ruby | Pigeon Blood Ruby | Mozambique Ruby

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