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11 carat Oval Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gems, 14.2 x 10.2 mm, Photo A

11 carat Oval Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gems, 14.2 x 10.2 mm

Amethyst

11.00ct total2 pcs
$ 43.68
14.2 x 10.2 mm
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91.06 carat Black Tourmaline, Cushion loose Tourmaline from Mozambique, Natural Untreated Gem, 31.2 x 26.4 mm, Photo A

91.06 carat Black Tourmaline, Cushion loose Tourmaline from Mozambique, Natural Untreated Gem, 31.2 x 26.4 mm

Tourmaline

91.06ct1 pc
$ 455.30
31.2 x 26.4 mm
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48.47 ct Baguette Hematite, 17.5 x 13.5 mm From Brazil, Photo A

48.47 ct Baguette Hematite, 17.5 x 13.5 mm From Brazil

Hematite

48.47ct total2 pcs
$ 47.45
17.5 x 13.5 mm
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4.62 carat Trillion Rhodolite Garnet, loose Certified Rhodolite Garnet from Mozambique, Natural Untreated Gems, 5 x 5 mm, Photo A

4.62 carat Trillion Rhodolite Garnet, loose Certified Rhodolite Garnet from Mozambique, Natural Untreated Gems, 5 x 5 mm

Rhodolite Garnet

4.62ct total10 pcs
$ 40.66
5 x 5 mm
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19.71 carat Carved Flower Ruby, loose Certified Ruby from Madagascar, Natural Gems, 18.5 x 16.3 mm, Photo A
Click for Product Video (691114)

19.71 carat Carved Flower Ruby, loose Certified Ruby from Madagascar, Natural Gems, 18.5 x 16.3 mm

Ruby

19.71ct total2 pcs
$ 394.20
18.5 x 16.3 mm
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8.41 ct Oval Cut Strawberry Quartz, 14.6 x 11.7 mm From Russia, Photo A

8.41 ct Oval Cut Strawberry Quartz, 14.6 x 11.7 mm From Russia

Strawberry Quartz

8.41ct1 pc
$ 64.76
14.6 x 11.7 mm
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2.21 carat Orange Hessonite Garnet, Cushion loose Hessonite Garnet from Sri Lanka, Natural Untreated Gem, 7.1 x 7 mm, Photo A

2.21 carat Orange Hessonite Garnet, Cushion loose Hessonite Garnet from Sri Lanka, Natural Untreated Gem, 7.1 x 7 mm

Hessonite Garnet

2.21ct1 pc
$ 41.89
7.1 x 7 mm
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14.01 ct Asscher Cut Rose Quartz, 14.4 x 14.3 mm From South Africa, Photo A

14.01 ct Asscher Cut Rose Quartz, 14.4 x 14.3 mm From South Africa

Rose Quartz

14.01ct1 pc
$ 77.06
14.4 x 14.3 mm
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26.48 ct Oval Agate, 19 x 18 mm From Indonesia, Photo A

26.48 ct Oval Agate, 19 x 18 mm From Indonesia

Agate

26.48ct1 pc
$ 21.18
19 x 18 mm
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20 ct Green Amazonite, 33.6 mm Pencil Cut From Madagascar, Photo A

20 ct Green Amazonite, 33.6 mm Pencil Cut From Madagascar

Amazonite

20.00ct1 pc
$ 11.00
33.6 x 8.7 mm
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25.03 ct Multicolor Mystic Quartz, 18.2 x 13.3 mm Oval Concave Cut From Brazil, Photo A

25.03 ct Multicolor Mystic Quartz, 18.2 x 13.3 mm Oval Concave Cut From Brazil

Mystic Quartz

25.03ct total2 pcs
$ 75.09
18.2 x 13.3 mm
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0.51 ct Loose Yellow Sapphire, 4.1 x 4 mm Square Cut From Tanzania, Photo A

0.51 ct Loose Yellow Sapphire, 4.1 x 4 mm Square Cut From Tanzania

Sapphire

0.51ct1 pc
$ 27.82
4.1 x 4 mm
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2.25 carat Sky Blue Topaz, Emerald Cut loose Topaz from Brazil, Natural Gems, 6.9 x 5 mm, Photo A

2.25 carat Sky Blue Topaz, Emerald Cut loose Topaz from Brazil, Natural Gems, 6.9 x 5 mm

Topaz

2.25ct total2 pcs
$ 16.16
6.9 x 5 mm
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1.15 carat Pear Shape Color-Change Diaspore, loose Certified Color-Change Diaspore from Turkey, Natural Untreated Gem, 10.7 x 4.7 mm, Photo A

1.15 carat Pear Shape Color-Change Diaspore, loose Certified Color-Change Diaspore from Turkey, Natural Untreated Gem, 10.7 x 4.7 mm

Color-Change Diaspore

1.15ct1 pc
$ 40.48
10.7 x 4.7 mm
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5.88 carat Yellow Citrine, Round loose Citrine from Brazil, Natural Untreated Gem, 12.1 mm, Photo A

5.88 carat Yellow Citrine, Round loose Citrine from Brazil, Natural Untreated Gem, 12.1 mm

Citrine

5.88ct1 pc
$ 45.28
12.1 mm
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1.18 ct Cushion Cut Color-Change Diaspore, 7.4 x 5.1 mm From Turkey, Photo A

1.18 ct Cushion Cut Color-Change Diaspore, 7.4 x 5.1 mm From Turkey

Color-Change Diaspore

1.18ct1 pc
$ 56.73
7.4 x 5.1 mm
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4.54 carat Sky Blue Topaz, Half Moon loose Topaz from Brazil, Natural Gem, 11.8 x 8 mm, Photo A

4.54 carat Sky Blue Topaz, Half Moon loose Topaz from Brazil, Natural Gem, 11.8 x 8 mm

Topaz

4.54ct1 pc
$ 29.96
11.8 x 8 mm
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12.61 ct Yellow Quartz, 14.9 x 14.8 mm Carved From Brazil, Photo A

12.61 ct Yellow Quartz, 14.9 x 14.8 mm Carved From Brazil

Quartz

12.61ct1 pc
$ 48.55
14.9 x 14.8 mm
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10.95 carat Ammolite, loose Certified Ammolite from Canada, Natural Gem, 28.3 x 8.8 mm, Photo A
Click for Product Video (523401)

10.95 carat Ammolite, loose Certified Ammolite from Canada, Natural Gem, 28.3 x 8.8 mm

Ammolite

10.95ct1 pc
$ 240.90
28.3 x 8.8 mm
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17.42 carat Pear Obsidian, loose Certified Obsidian from the United States, Natural Untreated Gem, 25.6 x 16 mm, Photo A

17.42 carat Pear Obsidian, loose Certified Obsidian from the United States, Natural Untreated Gem, 25.6 x 16 mm

Obsidian

17.42ct1 pc
$ 28.74
25.6 x 16 mm
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1.6 carat Orange Hessonite Garnet, Cushion loose Hessonite Garnet from Sri Lanka, Natural Untreated Gem, 7.1 x 7.1 mm, Photo A

1.6 carat Orange Hessonite Garnet, Cushion loose Hessonite Garnet from Sri Lanka, Natural Untreated Gem, 7.1 x 7.1 mm

Hessonite Garnet

1.60ct1 pc
$ 27.37
7.1 x 7.1 mm
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3.78 ct Oval Cut Strawberry Quartz, 12.1 x 9.8 mm From Russia, Photo A

3.78 ct Oval Cut Strawberry Quartz, 12.1 x 9.8 mm From Russia

Strawberry Quartz

3.78ct1 pc
$ 20.03
12.1 x 9.8 mm
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0.92 ct Loose Pink Sapphire, 7.8 x 5.9 mm Odd Shaped From Tanzania, Photo A

0.92 ct Loose Pink Sapphire, 7.8 x 5.9 mm Odd Shaped From Tanzania

Sapphire

0.92ct1 pc
$ 103.05
7.8 x 5.9 mm
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44.3 ct Oval Jasper, 35.9 x 24 mm From Indonesia, Photo A

44.3 ct Oval Jasper, 35.9 x 24 mm From Indonesia

Jasper

44.30ct1 pc
$ 45.32
35.9 x 24 mm
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1.64 ct Loose Pink Tourmaline, 6.9 mm Round Cabochon From Mozambique, Photo A

1.64 ct Loose Pink Tourmaline, 6.9 mm Round Cabochon From Mozambique

Tourmaline

1.64ct1 pc
$ 28.22
6.9 mm
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11.86 carat Pear Coral, loose Certified Coral from Indonesia, Natural Untreated Gem, 19.3 x 15.4 mm, Photo A

11.86 carat Pear Coral, loose Certified Coral from Indonesia, Natural Untreated Gem, 19.3 x 15.4 mm

Coral

11.86ct1 pc
$ 37.18
19.3 x 15.4 mm
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2.51 ct Blue Green Grandidierite, 10.4 x 7.6 mm Oval Cut From Madagascar, Photo A

2.51 ct Blue Green Grandidierite, 10.4 x 7.6 mm Oval Cut From Madagascar

Grandidierite

2.51ct1 pc
$ 110.44
10.4 x 7.6 mm
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23.63 carat Trillion Ammolite, loose Certified Ammolite from Canada, Natural Gem, 28.3 x 21.3 mm, Photo A
Click for Product Video (451548)

23.63 carat Trillion Ammolite, loose Certified Ammolite from Canada, Natural Gem, 28.3 x 21.3 mm

Ammolite

23.63ct1 pc
$ 259.93
28.3 x 21.3 mm
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15.16 carat Pear Shape Onyx, loose Certified Onyx from Sri Lanka, Natural Gem, 26.9 x 14.8 mm, Photo A

15.16 carat Pear Shape Onyx, loose Certified Onyx from Sri Lanka, Natural Gem, 26.9 x 14.8 mm

Onyx

15.16ct1 pc
$ 15.16
26.9 x 14.8 mm
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33.25 ct Oval Star Ruby, 19.9 x 17.2 mm From Madagascar, Photo A

33.25 ct Oval Star Ruby, 19.9 x 17.2 mm From Madagascar

Star Ruby

33.25ct1 pc
$ 438.90
19.9 x 17.2 mm
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2 carat Princess-Cut Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 7.9 x 7.8 mm, Photo A

2 carat Princess-Cut Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 7.9 x 7.8 mm

Amethyst

2.00ct1 pc
$ 15.40
7.9 x 7.8 mm
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2.25 carat Square Rhodolite Garnet, loose Certified Rhodolite Garnet from Mozambique, Natural Untreated Gems, 4.8 x 4.7 mm, Photo A

2.25 carat Square Rhodolite Garnet, loose Certified Rhodolite Garnet from Mozambique, Natural Untreated Gems, 4.8 x 4.7 mm

Rhodolite Garnet

2.25ct total4 pcs
$ 19.78
4.8 x 4.7 mm
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Photos are of Actual Products for Sale

What is a Star Gemstone?

Star or, more properly, asterism, is a term used for gemstones which display a star-like shape that can appear to float across their surface. Typically the star will have 4 or 6 rays but on very rare occasions 12 rays can be seen.

The most famous Star Gemstones are rubies and sapphires but asterism may also be exhibited by a number of other gemstones, such as moonstone, lemon and rose quartz, garnet and diopside.

In most cases, the 'star effect' is the result of tiny inclusions of the mineral rutile within the gemstone which are aligned in parallel lines. With great skill, cutters have to turn the gemstones to just the right angle before shaping and polishing to ensure they have a clear and distinct star.

What shape are Star Gemstones?

To display the star effect at its most impressive, most Star Gemstones are cut into cabochons - flat bottoms with smooth domed tops - not faceted. These cabochons tend to be round or oval but very rarely come in pear or rectangular shapes.

What are the spiritual benefits of Star Gemstone?

With their other worldly appearance, it is no wonder that Star Gemstones were quickly given mystical powers in the ancient world.

In India, a Star Ruby would be worn into battle by warriors for protection and it was believed that any opponent who saw the gemstone would lose half his bravery.

It has also been a long held belief that Star Gemstones could ward off the malevolence and misfortune brought about by the Evil Eye.

The three lines that create the 6 rayed Star Gemstones are supposed to symbolize trust, hope and destiny.

Each gemstone type - ruby, sapphire, garnet and so on - has its own strengths and spiritual influences but these powers are magnified and intensified by the Star.

See our detailed article on gemstone meaning and uses

What color are Star Gemstones?

Generally the ideal color of a Star Gemstone should be close to that of a normal specimen of the gem type. So, for example, a star sapphire should be blue, a star ruby should be red and a star rose quartz should be pink.

Of course, there will be variations - star sapphires can be found in yellow and golden colors, star rubies range from pink to purple and the presence of the rutile needed to create the star effect will naturally weaken the color of all star gemstones.

Read more about gemstones colors here

How much are Star Gemstones?

Usually gemstones are priced according to the 4 Cs - color, clarity, cut and carat weight - and the gem type. Star gemstones are no different but have a couple of extra elements that add or subtract value.

As an example, in most cases, rare star sapphires will be more expensive than relatively common star moonstones. Star Quartz and Star Garnets are both very reasonably priced gemstones.

Once you have established which gem type to choose there are a few factors to consider when pricing the gemstone:

  • Color - a vivid, even color is preferred - similar to typical gem type color.
  • Clarity - the rutile inclusions mean that Star Gemstones will be semi-transparent or translucent at best.
  • Cut - Star gemstones tend to be oval or round cabochons in order to show off the star effect.
  • Carat - All other factors being equal, the larger the carat weight the more valuable the gemstone.
  • Star - the star itself should be sharp and distinct, centered at the top of the stone, and easily visible from all angles and from a fair distance. The rays, whether 4, 6 or 12, should be straight, unbroken and the same width and length. The star should also have a good contrast against the colored background. Finally the star should have a smooth and graceful movement across the face of the gemstone as it is turned from side to side.

Are there any famous Star Gemstones?

Yes, some of the most famous and infamous gemstones in history have been Star Gemstones:

  • The Neelanjali Star Ruby - A 12 point double star weighing 1370 carats.
  • Black Star of Queensland - world's largest gem-quality star sapphire, it weighs 733 carats.
  • The Star of Asia - A famous milky blue 330 carat Burmese sapphire beauty.
  • The Midnight Star Sapphire - a 116 carat deep purple Sri Lankan sapphire.
  • The Star of India - A flawless 563 carat blue star sapphire with a star on both sides.

What jewelry are Star Gemstones suitable for?

Large single star gemstones can be ideal for pendants and radiate both alluring and mystical qualities. Slightly smaller star gemstones can make great rings with a very popular retro look.

Although many Star Gemstones have unique looks, it is possible to find some examples as pairs and in lots, so earrings, multi-stone jewelry items as well as side stones and accent stones become options.

Gemstones can vary in hardness and durability. Some Star Gemstones such as rubies and sapphires are very tough and can be used for all types of jewelry, others such as garnet and quartz are a little softer but still sturdy enough for daily use.

As a guideline gemstones of a Mohs Hardness rating of above 7 are considered durable.

For more information see our article here.

Star Gemstone History

Star Gemstones have a long and varied history full of myth and legend.

Owner of the 'face that launched a 1000 ships', renowned beauty Helen of Troy supposedly owed her desirability to the large star sapphire she wore. Dozens of princes fought for her hand before she married King Menelaus of Sparta. Then she ran away with Paris and began the ten year Trojan Wars.

Wise King Soloman had a magical ring which was described as blue sapphire with a 6 pointed star of David engraved on it that allowed him to speak to animals and banish demons. Sounds like it could have been a Star Sapphire.

In the 'jewel heist of the century', the Star of India and the Midnight Star Sapphire were among the gemstones stolen back in 1964 valued at the time at $400,000 (much more now). Luckily most of the stones were recovered.

Read more about the famous heist here.

Star Gemstone Treatments

A common way to enhance the appearance of gemstones is through heat treatment as this can improve both the color and the clarity. With Star Gemstones it can be a little tricky to improve the color with heat and not destroy the inclusions that create the star effect.

For this reason most Star Gemstones are not treated.

Some star sapphires and star rubies are fracture filled which repairs minor cracks and fissures common in these gemstones. This is a permanent and accepted treatment.

Synthetic Star Gemstones exist although GemSelect never buys or sells them. Look out for any gemstones that look 'too perfect' and purchase your stone from a reputable dealer.

Any treatments our gemstones receive will be fully and clearly disclosed.

Star Gemstone Product Uses

Star gemstones can be used in just the same way as all gemstones - for jewelry items, spiritual crystal healing, to decorate the home or office or to expand a collection.

Read All

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Overall Rating -> 10 star ratings

Fantastic dealer for quality gemstones. Website is easy to navigate, selection is superb, delivery of purchases is prompt. Easy to select incorrect payment options, however.

Posted By David W in May, 2023
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Overall Rating -> 10 star ratings

Purchasing from Gem Select was a pleasant and easy experience. The photos of the stones I was interested in were an accurate depiction of the stones I received. Ordering was easy and the items arrived within a week. Over all it was a very positive experience.

Posted By Dee in September, 2023
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Overall Rating -> 9 star ratings

Overall good, shipping prices just seem a little on the high side.

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Overall Rating -> 10 star ratings

Wonderful selection of gems to choose from. Have made many purchases and was only slightly disappointed once.

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Super easy to do business for great products.

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Todo muy bien en la compra ahora esperar recibir el pedido.

Posted By MAGSMX in August, 2023
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Very detailed and great pictures

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Overall Rating -> 10 star ratings

I really enjoy browsing through GemSelect. The selection is always marvelous and I love how detailed everything is described. The only thing I noticed is that when browsing through my phone, the videos of the gems do not load. If there were more videos of the gems, that would be amazing, though I understand that is a lot of work on GemSelect's part! Checking out is also very fast and easy, and I love that the return policy is very good, though I hope I don't have to use it anytime soon.

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Found the stone I wanted which was delivered quickly and met expectations.

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Overall Rating -> 8 star ratings

Very easy to find the specific stone I was looking for. I am pleased by both the selection and the price of the stones that are available. The only "bad" thing that I have to say is that the interface of the site is outdated.

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