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16.85 Ct. Blue Star Sapphire from Ceylon (Sri Lanka)

Item ID: S45284

This loose stone ships by Sep 27

 
Free shipping
$6,484

1 shopper is considering this stone right now
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100% Natural Sapphires
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Product Details
Item ID:
S45284
Dimensions (MM):
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Length: 14.29
Width: 11.22
Height: 10.25
Weight:
16.85 Ct.
Color:
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Blue
Color intensity:
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Intense
Clarity:
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Included
Shape:
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Oval
Cut:
Cabochon
Cutting style:
Cabochon
Enhancements:
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No Enhancement
Origin:
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Ceylon (Sri Lanka)
Per carat price:
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$385
Star appearance:
2-4 Ray, Strong Star Appearance
Product description

Finding a gemstone that truly answers your search for beauty, durability, and authenticity can be a demanding journey, whether you are selecting the perfect engagement ring, commissioning a signature piece, or adding a rare treasure to a curated collection. You need a stone that combines captivating presence with the confidence to withstand daily life, a gem that will remain a reliable companion through decades of wear. This translucent 16.85 carat oval blue star sapphire meets those needs with an uncommon harmony of visual drama and practical resilience, and it arrives to you direct from The Natural Sapphire Company as a no enhancement, natural gem from Ceylon Sri Lanka, ready to end your search with certainty and satisfaction.

At first sight this oval cabochon shape presents a clear and intense blue hue that is immediately arresting, the dimensions 14.29 x 11.22 x 10.25 mm offering a commanding size that suits a wide range of jewelry designs without appearing bulky. The cabochon cut is the classic choice for a star sapphire, its smooth rounded dome allowing the six ray asterism to glide across the surface when light moves, a dynamic and elegant effect that transforms ordinary lighting into a daily spectacle. Clarity is graded included as evaluated at eye level, indicating internal features that are visible to the unaided eye, and in this stone those internal structures are integral to the star phenomenon rather than detracting from the gem. With intense color intensity and an excellent polish, the surface finish enhances the stone s optical performance and allows the star to read sharply, while the translucency lends depth rather than opacity, creating a sense of living color that shifts with every angle. Origin plays a significant role in the story of a sapphire, and Ceylon Sri Lanka is synonymous with a historic legacy of fine blues and desirable character, a provenance that adds to both the emotional and investment value of this gem. Importantly this sapphire is untreated, no enhancement, a pure and honest natural offering that will appeal to collectors and those who prefer their gemstones in original state.

Durability is often the deciding factor for a gemstone destined for everyday jewelry, and this star sapphire excels in that regard, making it an excellent choice for rings, necklaces, and any piece intended for regular wear. As corundum, sapphire rates a nine on the Mohs hardness scale, second only to diamond in everyday scratch resistance, which means the surface is highly resistant to abrasion from common contacts and chores. Beyond hardness, sapphires typically display strong toughness and lack prominent cleavage, so they resist chipping under normal impact better than many other gemstones, and the cabochon cut further enhances durability by eliminating pointed facets that can catch or chip. The included clarity does not imply weakness, rather it reflects internal silk and mineral inclusions that produce the star, and these internal features are dispersed in a way that does not compromise structural integrity for practical wear. For added security in busy hands, we recommend a protective setting such as a bezel or a low profile mount that shields the girdle and subtly integrates the stone into a wearable silhouette, while prong settings can be used with care and appropriate metal choice to maintain both presence and protection. At The Natural Sapphire Company we pair a stone like this with expert setting advice and bespoke design consultation, ensuring the finished piece not only showcases the sapphire s asterism and intense color, but also endures as a lifetime jewel.

When your priority is a gemstone that fulfils aesthetic desire, durable performance, and provenance certainty, this 16.85 carat translucent oval blue star sapphire is a decisive answer, an elegant and robust centerpiece that resolves the search for a daily wear worthy treasure. Its combination of size, intense Ceylon blue color, striking star effect, cabochon profile, excellent polish, and natural no enhancement origin presents a rare convergence of qualities that suits both romantic commitments and discerning collectors. Allow The Natural Sapphire Company to guide you through the final steps of selection, setting, and care, and rest assured that this gem will be a lasting solution to your quest, offering beauty, integrity, and the confidence to wear it every day.

Custom Designs Created With This Stone
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Our Packaging
Beauty is in the details
Our packaging, reports, and documentation are crafted to be refined, concise, and trustworthy. With our reputation as our greatest asset, we never cut corners. Explore our detailed reports and premium packaging for every sapphire.

Our custom zinc alloy ring boxes are designed to impress as much as our sapphire rings and jewelry. Each box weighs nearly a pound, adding a touch of luxury to your experience.
Zinc-alloy ring box - opened
Our customers often comment about our stunning, hand made, presentation boxes and reporting documents. Large zinc-alloy boxes are included at no extra cost for jewelry items over $5000.
Zinc-alloy ring box - closed
Presentation matters. We take extra special care to present our items professionally. Our custom hand-made zinc-alloy ring boxes are heavy weight. At almost 1 pound each they are extremely impressive and unique.
Smaller Zinc-allow ring box
For Jewelry Purchases from $500-$5000 in value we include our petit zinc alloy box.
Long, dark brown hinged jewelry box showcasing a line bracelet gently secured and beautifully displayed
For line bracelets over $500, we include a high quality, hinged jewelry box. Pictured is one of the beautiful styles that we may use.
Dark brown jewelry box showcasing two hanging earings upon opening
For hanging earrings over $500, we include a high quality, hinged jewelry box. Pictured is one of the beautiful styles that we may use.
Petit box w/ luxurious white pouch showcasing a piece of jewelry
Jewelry items under $500 will ship in a signature pouch and box.
Zinc-alloy sapphire box - closed with view of stone through window
Our hand-made zinc sapphire boxes are the finest in the industry and are included for all sapphires over $2000.
Zinc-alloy sapphire box - open
A well presented sapphire makes a difference.
Wooden display box
For sapphire purchases between $500 and $2000 we ship a high quality black display box which shows the sapphire professionally. Stones under $500 will ship in a secure plastic pouch.
Document folder nicely wrapped
Each document folder is individually gift wrapped.
Assortment of reports and certification documents on table
Our extensive gemological reports cover every possible detail of your item. Professionally made with care to explain what gemological terms mean, our reports offer an education in fine sapphires and jewelry reporting.
Open folder displaying documents
Inside you will find well organized reporting to include appraisal, identification and gem faceting grade reports. Special care literature on how to clean your sapphire or jewelry is included as well.
Jewelry cleaning solution enlarged
Jewelry cleaner included with items over $2,000. * Unfortunately for international shipments we can not include liquids.
Sample identification report dust cover
Sample identification report dust cover [front].
Sample identification report
Sample identification report
Sample identification report reference page
Sample identification report dust cover [inside back].
Sample 3d scan report dust cover
Sample 3D scan report dust cover [front].
Sample 3D scan report.
Sample 3D scan report.
Sample 3D scan report reference page
Sample 3D scan report dust cover [inside back].
Zinc-alloy ring box - opened
Zinc-alloy ring box - closed
Smaller Zinc-allow ring box
Long, dark brown hinged jewelry box showcasing a line bracelet gently secured and beautifully displayed
Dark brown jewelry box showcasing two hanging earings upon opening
Petit box w/ luxurious white pouch showcasing a piece of jewelry
Zinc-alloy sapphire box - closed with view of stone through window
Zinc-alloy sapphire box - open
Wooden display box
Document folder nicely wrapped
Assortment of reports and certification documents on table
Open folder displaying documents
Jewelry cleaning solution enlarged
Sample identification report dust cover
Sample identification report
Sample identification report reference page
Sample 3d scan report dust cover
Sample 3D scan report.
Sample 3D scan report reference page
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education
Learn About Star Sapphires
Star sapphires captivate with their rare optical phenomenon known as asterism, where a luminous star-shaped pattern appears on the stone’s surface. This celestial effect adds a magical quality to the gem, making it a truly mesmerizing choice for collectors and jewelry enthusiasts.
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