Blue Blue Star Sapphire 17.81ct
Blue Blue Star Sapphire 17.81ct
Blue Blue Star Sapphire 17.81ct
US$ 18,333
17.81ct Blue Star Sapphire at US$ 1,029/ct · certified by AIGS
Certification?AIGS Certificate Included
| Weight | 17.81 ct |
| Shape / Cut | Oval / Cabochon |
| Color | Blue |
| Clarity | O |
| Treatment | Unheated |
| Origin | Sri Lanka |
| Dimensions | 15.94 x 12.23 x 7.81 mm |
| Certificate | AIGS / GF21101809 |
Buy with Confidence
01Natural only
Only natural, earth-mined gemstones — never synthetic or laboratory-created.
Since 1985
A second-generation family gemstone house, cutting and selling from Bangkok.
Described as it is
Hand-selected and described accurately, with any known treatment disclosed.
Secure checkout
Encrypted end to end, so your payment details stay protected.
Anatomy of This Stone
02Colour
Blue
Indicative tonal range for this colour family. For reference only — screens vary.
This 17.81ct blue star sapphire sits in the blue range of the blue star sapphire colour scale.
Clarity
O
This 17.81ct blue star sapphire is graded O. Opaque: the stone does not transmit light, so it is not graded for inclusions. Opacity is a characteristic of the material, not a fault.
Shape & size
Oval
15.94 × 12.23 × 7.81 mm
This 17.81ct blue star sapphire measures 15.94 × 12.23 × 7.81 mm, shown here at true physical size on most screens. Carat weight describes a gemstone's mass rather than its dimensions, so always check the millimetres before buying.
Price
Our price
US$ 18,333
US$ 1,029 / carat
Retail price
US$ 36,666
STARLANKA buys rough at source and cuts it in-house in Bangkok, so a stone reaches you without the layers of margin a blue star sapphire normally collects between the mine and a retail counter. The price shown is the price — no negotiated tiers.
Retail price is our estimate of what a comparable stone typically costs at traditional retail. It is a comparison figure — not a former price at which this stone was offered.
Certification & Shipping
03Certification
AIGS certified
This 17.81ct blue star sapphire is accompanied by an independent laboratory report from AIGS, report number GF21101809.
- GIA
- GRS
- AIGS
- GIT
- ICA GemLab
- GUILD
- AGR
Reports are issued by the laboratory directly and describe the stone independently of us. Our affiliations.
Shipping & returns
Free and fully insured, worldwide
In the box
Sealed gem box, itemised invoice, and the lab report where one accompanies the stone.
Returns
14 days from delivery. We send a prepaid insured label and refund the original payment method.
Voids a return
The stone has been set, the seal broken, or the stone altered or recut.
Dispatched within 1–3 business days. Full detail in our shipping and return policies.
Frequently Asked Questions
04Is this blue star sapphire natural or lab-created?
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This STARLANKA blue star sapphire (SKU BR0081) is a natural, earth-mined blue star sapphire. STARLANKA sells only natural gemstones and does not offer synthetic or laboratory-created stones.
Has this blue star sapphire been treated?
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This STARLANKA blue star sapphire (SKU BR0081) is unheated — it has not been heat treated. STARLANKA discloses any known treatment or enhancement on every stone it sells.
Does this stone come with a certificate?
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This STARLANKA blue star sapphire (SKU BR0081) is accompanied by an independent laboratory report from AIGS, report number GF21101809.
What size is a 17.81ct oval blue star sapphire?
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This STARLANKA blue star sapphire (SKU BR0081) weighs 17.81 carats and measures 15.94 × 12.23 × 7.81 mm. Carat weight describes a gemstone's mass rather than its dimensions, so two stones of equal weight can differ in face-up size depending on shape and cut depth.
How much does shipping cost?
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STARLANKA ships this blue star sapphire (SKU BR0081) free of charge and fully insured worldwide, with no minimum order value. Orders are dispatched within 1–3 business days: 2–4 business days in transit to the United States by international express courier, 3–7 business days elsewhere internationally, and 1 business day within Thailand by local express courier.
Can I return this blue star sapphire?
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This STARLANKA blue star sapphire (SKU BR0081) can be returned within 14 days of delivery for a refund to the original payment method, provided it has not been set into jewellery, had its security seal broken, or been altered or recut. STARLANKA provides a prepaid, insured return label.
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Blue Star Sapphire Reviews(7)
“good quality and price”
Verified buyer·Apr 16, 2022
Apr 16, 2022
“Legitimate and beautiful. Size is accurate and is super pretty! It came in many protective layers.”
Verified buyer·Feb 20, 2021
Feb 20, 2021
Verified buyer·Feb 12, 2021
Feb 12, 2021
“Most Wonderfull Brilliant Successs, Wiyh New 3.8 ct Blue Star Saphire, Cop Coon Mak Mak, Coon Dee Mak, Lagone, Choke Dee, Stay Happy and Safe, Perry " Pong Sak" Farquhar Hawaii, USA”
Verified buyer·Sep 17, 2020
Sep 17, 2020
“Great price I shopped around”
Verified buyer·Jul 26, 2020
Jul 26, 2020
“The stone came surprisingly fast, and is absolutely stunning. Very happy customer!”
Verified buyer·May 30, 2020
May 30, 2020
“First Tyme Since I Was Actually In Thailand Myself 1966, That I Have Had Such Wonderful Exciting And Perfect Jewelry Encounter. I Will Repeat Our Present Transactions Monthly.Sincerely and Respectively, Perry Farquhar”
Verified buyer·May 2, 2020
May 2, 2020
