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20ct Black Spinel 10mm

Black Spinel Round Rose-Cut 20 carat 10mm
Spinel from The Source Spinel from The Source Spinel from The Source Click to Enlarge

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Photos above are of Actual Items for Sale
Type: Spinel
Item ID: 259974
Content: 4 gems
Weight: 19.7 ct (total)
Calibrated:10 mm
Exact Size: 10.04 mm x 4.7 mm (avg.)
Shape: Round Rose-Cut
Clarity: Opaque
Treatment: None
Origin: Thailand
Price: USD
Shipping & Handling USD 6.99
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Add Matching or Similar Items (11)
Item in Stock
Compare 11 Similar or Matching Items! Back To Top
ID: 2599704 pcs
20 ct Opaque Round Rose-Cut Spinel 10mm
19.96ctw Spinel
10.24mm x 5.16mm
USD 119.76
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ID: 2599724 pcs
10mm Spinel 20ct Round Rose-Cut in Black
19.58ctw Spinel
10.14mm x 4.74mm
USD 117.48
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ID: 2599764 pcs
19 ct Opaque Round Rose-Cut Spinel 10mm
19.19ctw Spinel
10.21mm x 4.81mm
USD 115.14
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ID: 3839224 pcs
10 mm Spinel 18ct Round Rose-Cut in Black
17.89ctw Spinel
10.11mm x 4.43mm
USD 53.67
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ID: 3839254 pcs
17 carat Black Round Rose-Cut Spinel 10mm
16.54ctw Spinel
10.10mm x 4.14mm
USD 49.62
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ID: 3839274 pcs
10 mm Round Rose-Cut Spinel 17ct
16.53ctw Spinel
10.07mm x 4.21mm
USD 49.59
Item in Stock
ID: 3839284 pcs
18 carat Black Round Rose-Cut Spinel 10 mm
18.17ctw Spinel
10.08mm x 4.63mm
USD 54.51
Item in Stock
ID: 3839294 pcs
19 ct Opaque Round Rose-Cut Spinel 10 mm
19.07ctw Spinel
10.18mm x 4.67mm
USD 57.21
Item in Stock
ID: 3839324 pcs
10 mm Round Rose-Cut Spinel 16ct
16.22ctw Spinel
9.93mm x 4.16mm
USD 48.66
Item in Stock
ID: 3839334 pcs
15 ct Opaque Round Rose-Cut Spinel 10mm
15.34ctw Spinel
10.11mm x 3.98mm
USD 46.02
Item in Stock
ID: 3839634 pcs
10mm Spinel 17ct Round Rose-Cut in Black
16.79ctw Spinel
10.15mm x 4.29mm
USD 50.37
Item in Stock
These natural Black Spinels originate from Thailand and their total weight is about 20 carats. The measurements are 10.04mm x 4.7mm (diameter x depth).These gemstones are calibrated to fit 10 mm jewelry settings. The shape/cut-style of these Spinels is Round Rose-Cut. These 19.7ctw Spinel gems are available to order and can be shipped anywhere in the world. Gemstone Certification can also be provided as an optional service.
Shipping Back To Top
  • FedEx or DHL for USD 20.00 only / Delivery 3-4 days / fully insured
  • Registered Mail for USD 6.99 / Delivery 7-14 days / insured for USD 200.00
Payment Options
  • Credit Card
  • PayPal
  • Western Union
  • Bank transfer
Guarantee / Certification
  • All gemstones are natural!
  • All photos and videos are of the actual gem for sale (No Stock Photos)
  • We offer certification from AIGS for USD 30.00 (5-10 additional days)
  • We also offer certification from the BGL lab for USD 15.00 only (3-4 days)
Size and Weight Back To Top
  • Gems are always measured in Millimeter (mm)
    Compare mm Size with US coins
  • Dimensions are given as length x width x depth, except for round stones which are diameter x depth
  • Select gems by size, not by weight! Gem varieties vary in density, so carat weight is not a good indication of size
  • Note: 1ct = 0.2g
Additional Quantities
  • Every item is unique, so you can only order 1 of each item
  • However, we often have similar or matching items. If so, we display them on the same gem detail page
Clarity Explained Back To Top
  • IF = Loupe Clean - Internally flawless; free of inclusions
  • VVS = Almost Loupe Clean - Very, very slight inclusions; inclusions barely seen under 10x magnification
  • VS = Eye Clean - Very slight inclusions; inclusions can be seen under 10x magnification
  • SI = Slightly included - Small inclusions can be seen with the naked eye
  • I1 = Included - Inclusions can be seen with the naked eye
  • Transparent = A gemstone having the property of transmitting light without serious diffusion / may have rutile or other inclusions
  • Translucent = Allowing light to pass through, but not transparent
  • Opaque = Does not allow light to pass through
Return Policy
  • All gems have a 30-day inspection period, which begins on the date of delivery. Gems may be returned for a full refund during this period.
  • Please email us for return authorization code when returning a gem.
  • For more details click here
About Spinel
Spinel is a special gemstone in many ways. For centuries it was mistaken for ruby and gained undeserved fame. Today fine red spinel is more rare than ruby but less valuable. That looks like a delayed revenge for its unlucky past. Its name derivation is also ambiguous. Experts are undecided whether it derives from the Greek word for "spark" or the Latin for "thorn".

Although commonly thought of as red, spinel can be found in a range of beautiful pastel shades. These outstanding shades of pink, purple, orange, blue, plus every combination in between make spinel one of the most desirable stones in the world. Of particular interest is a vivid hot pink with a tinge of orange, mined in Myanmar, that is one of the most spectacular gemstone colors in any gem species.

Due to its excellent hardness (8 on Mohs scale) and high clarity spinel produces fine jewelry in various cuts and shapes. Spinel is never treated in any way and continues to be a great substitute for ruby and sapphire as well as an outstanding stone in its own right.
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