Natural Green Tourmaline 1.98 Ct. Clean Octagon Shape 21 x 3.1 Mm Gemstones From Nigeria

Related Gems

0.80 ct Natural Green Tourmaline: Gemstones: Natural Tourmaline / Carat Weights: 0.80 ct / Size or Dimensions: 7 X 5 X 3.20 mm

Jul 04, 20250.80 ct Natural Green Tourmaline

0.50 ct Natural Green Tourmaline: Gemstones: Natural Tourmaline /Carat Weights: 0.50 ct /Size or Dimensions: 4.90 X 3.60 X 2.88 mm

Jul 04, 20250.50 ct Natural Green Tourmaline

0.48 ct Natural Green Tourmaline: Gemstones: Natural Tourmaline /Carat Weights: 0.48 ct /Size or Dimensions: 6.30 X 3 X 2.30 mm

Jul 04, 20250.48 ct Natural Green Tourmaline

1.73 Ct Natural Green Fire Opal: Gemstones: Natural Green Fire Opal /Carat Weights: 1.73 ct /Size or Dimensions: 9 X 7 mm /Treatment: Coated

Jul 04, 20251.73 Ct Natural Green Fire Opal

18.01 Ct Natural Green Amethyst Lot: Gemstones: Natural Green Amethyst /Carat Weights: 18.01 Ct /Size or Dimensions: 10 X 7 mm / Treatment: Heated

Jul 04, 202518.01 Ct Natural Green Amethyst Lot

1.55 Ct Natural Green Fire Opal: Gemstones: Natural Green Fire Opal /Carat Weights: 1.55 ct /Size or Dimensions: 9 X 7 mm /Treatment: Coated

Jul 04, 20251.55 Ct Natural Green Fire Opal

4.60 Ct Natural Green Lemon Quartz: Gemstones: Natural lemon Quartz /Carat Weights: 4.60 ct /Size/Dimensions: 12 X 10 X 6 mm /Treatment: No

Jul 04, 20254.60 Ct Natural Green Lemon Quartz

1.27 Ct Natural Green Fire Opal: Gemstones: Natural Green Fire Opal /Carat Weights: 1.27 ct /Size or Dimensions: 9 X 7 mm /Treatment: Coated

Jul 04, 20251.27 Ct Natural Green Fire Opal

4.88 ct Natural Oval Tourmaline Set: Gemstones: Natural Tourmaline /Carat Weights: 4.88 ct /Size or Dimensions: 6 X 4 mm

Jul 04, 20254.88 ct Natural Oval Tourmaline Set

10.33 Ct "Top Quality" Natural Green Amethyst: Gemstones: Natural Green Amethyst /Carat Weights: 10.33 Ct /Size or Dimensions: 15.80 X 12.40 X 9 mm / Treatment: Heated

Jul 04, 202510.33 Ct "Top Quality" Natural Green Amethyst

3.83 Ct "Top Quality" Natural Green Amethyst: Gemstones: Natural Green Amethyst /Carat Weights: 3.83 Ct /Size or Dimensions: 14 X 17 X 5 mm / Treatment: Heated

Jul 04, 20253.83 Ct "Top Quality" Natural Green Amethyst

6.51 Ct Natural Green Amethyst: Gemstones: Natural Green Amethyst /Carat Weights: 6.51 Ct /Size or Dimensions: 13.40 X 10.40 X 6.60 mm / Treatment: Heated

Jul 04, 20256.51 Ct Natural Green Amethyst

0.72 Ct Natural Green Fire Opal: Gemstones: Natural Green Fire Opal /Carat Weights: 0.72 ct /Size or Dimensions: 6.80 X 6.70 X 3.10 mm /Treatment: Coated

Jul 04, 20250.72 Ct Natural Green Fire Opal

8.66 Ct Natural Green Amethyst: Gemstones: Natural Green Amethyst /Carat Weights: 8.66 Ct /Size or Dimensions: 17 X 12.20 X 7.40 mm / Treatment: Heated

Jul 04, 20258.66 Ct Natural Green Amethyst

7.33 ct Natural Tourmaline Loose Beads: Gemstones: Natural Tourmaline /Carat Weights: 7.33 ct /Size or Dimensions: 4.50 X 5.00 mm Approx

Jul 04, 20257.33 ct Natural Tourmaline Loose Beads

12.85 Ct "AAA Grade" Natural Green Gold Quartz: Gemstones: Natural Green Gold Quartz /Carat Weights: 12.85 ct /Size or Dimensions: 17.20 X 13.70 X 10 mm /Treatment: No

Jul 04, 202512.85 Ct "AAA Grade" Natural Green Gold Quartz

More Items in Gems

12.68 Ct Natural Purple Amethyst Oval Cut: Weight - 12.68 Ct / Dimensions - 17.50 x 13.20 x 9.00 mm / Shape - Oval Cut / Color - Purple / Clarity - VVS / Origin - Brazil / Treatment - Heated

Jun 30, 202512.68 Ct Natural Purple Amethyst Oval Cut

$29

Four Malachite Pyramids: Four mosaic malachite pyramids, larger with inset brass bands. [Largest: 7" H x 6.5" Square]. Condition is good with scattered minor losses.

6 days LeftFour Malachite Pyramids

$100

Approx. Three Carats Heat Treated Blue Sapphire: Natural Heat Treated Blue Sapphire, Approximate 3 Carats. Approximately 10.0L x 8.9W x 6.5D mm.

6 days LeftApprox. Three Carats Heat Treated Blue Sapphire

$80

7.20 Ct Natural Bi-Color Amethyst-Citrine Drilled Fancy Beads: Weight - 7.20 Ct / Dimensions - 11.20 x 11.20 x 7.70 mm/ Shape - Drilled Cube / Color - Bi-Color / Clarity - VVS / Origin -Brazil / Treatment - Heated

1 day Left7.20 Ct Natural Bi-Color Amethyst-Citrine Drilled Fancy Beads

$20

10.25 Ct Natural Water Blue Aquamarine Excellent Emerald Cut: Weight - 10.25 Ct / Dimensions - 13.90 x 12.20 x 8.00 mm / Shape - Emerald Cut / Color - Water Blue / Transparency -Transparent / Origin -India / Treatment - None

1 day Left10.25 Ct Natural Water Blue Aquamarine Excellent Emerald Cut

$32

Blue Jasper Specimen Eggs, 3: Collection of Three Blue Jasper Specimen Eggs. 2.25" H x 1.5" Diameter. Provenance: From a New York City Collection. Keywords: Mineral Specimens, Gemstone, Semi-precious stone, Rocks, Variscite, Mysti

4 days LeftBlue Jasper Specimen Eggs, 3

$75

Loose Diamond - ROUND 4.4ct D VVS1: Loose Diamond - ROUND 4.4ct D VVS1 Source: This is a real non-mined Diamond that has been grown in a lab Shape: ROUND Carats: 4.4 Color: D Clarity: VVS1 Certification: GIA Video:

3 days LeftLoose Diamond - ROUND 4.4ct D VVS1

$3,550

MONUMENTAL GREEN RESIN PYRAMID SCULPTURE SIGNED F. GODELSKI: A green resin pyramid, signed by F. Godelski, featuring a shattered or faceted internal structure that catches the light. Orinigally available at Barney's Chelsea Passage Home. From the private c

Jul 05, 2025MONUMENTAL GREEN RESIN PYRAMID SCULPTURE SIGNED F. GODELSKI

$250

5.15 CARAT RUBY: 5.15 CARAT RUBY Oval mixed cut ruby measuring 10.97 x 8.28 x 5.94 mm and weighing 5.15 carats. AGL, 2025, Report No. 1148072, Natural Corundum, Ruby, Thailand, Heated

3 days Left5.15 CARAT RUBY

$2,500

1 day Left22.63 Ct Natural American Fossil Coral Pear Cab

$26

6.86 Ct Natural Purple Amethyst Oval Cut: Weight - 6.86 Ct / Dimensions - 13.60 x 11.00 x 8.00 mm / Shape - Oval Cut / Color - Purple / Clarity - VVS / Origin -Brazil / Treatment - Heated

1 day Left6.86 Ct Natural Purple Amethyst Oval Cut

Watermelon Tourmaline, Topaz, Ruby

$30

One Loose Colombian Emerald: one loose emerald with clarity treatment weighing 2.97 carats; with GIA origin report #: 5232539989; [1 stone]

4 days LeftOne Loose Colombian Emerald

$200

One Loose Russian Emerald: with clarity enhancement emerald weighing 10.67 carats; with GIA Origin report #: 5231539992;

4 days LeftOne Loose Russian Emerald

$250

13.80 Ct Natural Bi-Color Lemon Quartz Octagon Cut: Weight - 13.80 Ct / Dimensions - 15.60 x 12.00 x 9.90 mm / Shape - Octagon Step Cut / Clarity - VVS / Origin - Brazil / Treatment - Heated

1 day Left13.80 Ct Natural Bi-Color Lemon Quartz Octagon Cut

$27

7X5" Baltic Amber with Insect Card: 7X5" Baltic Amber with Insect Card

Jul 06, 20257X5" Baltic Amber with Insect Card

Recommended Rocks, Minerals & Fossils

3.44 Ct Loose Diamond GIA Certificate: One loose round brilliant cut diamond (see GIA certificate dating from April 24, 2025, report number 6233572103). >br>Shape and Cutting style: Round brilliant. Measurements: 9.80 - 9.84 x 5.93 mm. Car

2 days Left3.44 Ct Loose Diamond GIA Certificate

$12,500

Loose Diamond - MARQUISE 3.2ct D VVS2: Loose Diamond - MARQUISE 3.2ct D VVS2 Source: This is a real non-mined Diamond that has been grown in a lab Shape: MARQUISE Carats: 3.2 Color: D Clarity: VVS2 Certification: IGI Video:

Live NowLoose Diamond - MARQUISE 3.2ct D VVS2

$115

Large Raw Natural Amber Fossil Resin Specimen 880g: Jumbo petrified piece of natural raw amber exhibiting rich butterscotch and cognac hues with visible organic inclusions. The surface presents natural oxidation, undulating nodules, and textural variat

Jul 02, 2025Large Raw Natural Amber Fossil Resin Specimen 880g

$650

Estate Large Set Siberia Fossil: Group of four large Siberian animal fossil sculptures, with three stands. Approx. 14*4.6*4 inch (largest).

5 days LeftEstate Large Set Siberia Fossil

$50

Geode & Crystal Mineral Specimen Large Collection Group Lot Over 117 Pcs: Geode & Crystal Mineral Specimen Large Collection Group Lot of over 117 Specimens Combined Weight: Over 38 Lbs Lot Comprising: 5x Petrified Wood Slabs 2x Geodes 2x Agate Bookends 4x Agate Bowls 4x Ony

7 days LeftGeode & Crystal Mineral Specimen Large Collection Group Lot Over 117 Pcs

$50

Massive 25.5 lb malachite specimen- 11" x 11" x 4": Massive 25.5 lb malachite specimen- 11" x 11" x 4"

Jun 30, 2025Massive 25.5 lb malachite specimen- 11" x 11" x 4"

$110

Fossil Amber, Found in Europe, Private Collection, Penn: Fossil Amber, Found in Europe, Private Collection, Penn

Live NowFossil Amber, Found in Europe, Private Collection, Penn

$12

Estate Large Iron Meteorite Like Stone Sculpture: Large iron meteorite like stone sculpture. Approx. 7.7*3.5*3.5 inch.

6 days LeftEstate Large Iron Meteorite Like Stone Sculpture

$90

Vintage Matching Pair Ruffled Surface Natural Tridacna Gigas Giant Clam Shells: Vintage Matching Pair Ruffled Surface Natural Tridacna Gigas Giant Clam Shells. 10"1/2Wide, 5"H. Incredible giant clam, natural, unique and beautiful sea shell.(Stand Not Included)

Jun 29, 2025Vintage Matching Pair Ruffled Surface Natural Tridacna Gigas Giant Clam Shells

$70

17 pc misc: Box with 17 pc misc. flint and stone items

4 days Left17 pc misc

$110

Grouping Of Unset Gemstones, Including Aquamarine: Grouping Of Unset Gemstones, Including Aquamarine. Emerald Cut Aquamarine approximately 9.5L x 7.9W x 5.4D mm. Blue sapphire approximately 5.4L x 4.6W x 3.3D mm. Ruby approximately 7.3L x 5.2W x 2.9D

6 days LeftGrouping Of Unset Gemstones, Including Aquamarine

$105

Lot of Meteorite Fragments: Multiple pieces, 65.7 grams total weight. Please see photos. Came out of an extensive rock and mineral collection.

7 days LeftLot of Meteorite Fragments

$50

One Loose Burmese, Blue to Violet Sapphire: one no heat, burmese color change sapphire weighing 6.28 carats; with GIA Origin report: 5231593766;

4 days LeftOne Loose Burmese, Blue to Violet Sapphire

$1,000

Large Multi-Species Fossil Fish Slab From Green River: North America, United States, Wyoming, Green River Formation, Eocene Epoch, ca. 53.5 to 48.5 million years ago. A striking fossilized mortality plate featuring a dynamic multi-species assemblage from

5 days LeftLarge Multi-Species Fossil Fish Slab From Green River

$4,500

400 Million Years Old Polished Orthoceras Fossil, Devonian Period, Atlas Mountains, Morocco: 400 Million Years Old Polished Orthoceras Fossil, Devonian Period, Atlas Mountains, Morocco

Live Now400 Million Years Old Polished Orthoceras Fossil, Devonian Period, Atlas Mountains, Morocco

$22

Jun 30, 202512.68 Ct Natural Purple Amethyst Oval Cut

$29

Lot 710531

View Previous Lot

View Next Lot

Natural Green Tourmaline 1.98 Ct. Clean Octagon Shape 21 x 3.1 Mm Gemstones From Nigeria

Name: Natural Green Tourmaline 1.98 Ct. Clean Octagon Shape 21 x 3.1 Mm Gemstones From Nigeria
SKU: 205476418
Price: 45 USD
Availability: InStock

Natural Green Tourmaline 1.98 Ct. Clean Octagon Shape 21 x 3.1 Mm Gemstones From Nigeria

#image-loader-main { display: none; }

Item Details

Description

Product ID: 807247172
Product Name: Natural Tourmaline
Weight: 1.98 CT.
Size: 21 x 3.1 x 2.9 MM.
Shape: Octagon
Color: Green
Clarity:IF
Luster: Good
Gems Origin: Nigeria
Treatment: Unheated
Crystal Structure: Trigonal
Hardness: 7 - 7.5
Specific Gravity: 3.0+
Refractive Index: 1.62 - 1.68

At Your Service:
At Treasure of Gems & Jewelry, our Customer Support Specialists are available during regular business hours to help with any questions, concerns or special requests that you may have.

Payment Policy
2 options Paypal and Stripe if we will requedt from paypal.com if you no have paypal account can make payment by credit card at stripe.com.

Shipping Policy:
First items weight not over 200 Grams shipping fee is $10. Additional items shipping fee is $2. Products ship from Chanthaburi Thailand need to wait 7 - 14 days.

By registering for and/or placing a bid in any Treasure of Gems & Jewelry auction, you acknowledge that you have read, understand, and agree to our Shipping, Payment & Auction Policies.

Product Condition
New

Condition

New

Buyer's Premium

Lot 710531

Estimate $45-$70

May 17, 2025

2 bidders are watching this item

Shipping & Pickup Options

Item located in Blanco, TX, US

$10 shipping in the US

Payment

Treasure of Gems & Jewelry

Blanco, TX, United States

152 Reviews