Blue Tanzanite 42.09ct Pair
Blue Tanzanite 42.09ct Pair
Blue Tanzanite 42.09ct Pair
US$ 19,028
42.09ct Tanzanite at US$ 452/ct
Certification?
| Weight | 42.09 ct |
| Shape / Cut | Oval / Fine Step Cut |
| Color | Blue |
| Clarity | VS |
| Treatment | Unheated |
| Origin | Tanzania |
| Dimensions | 18.87 x 16.21 x 9.54 mm |
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 42.09ct tanzanite sits in the blue range of the tanzanite colour scale.
Clarity
VS
This 42.09ct tanzanite is graded VS. Very Slightly Included: inclusions are visible under 10x magnification but not to the naked eye.
Shape & size
Oval
18.87 × 16.21 × 9.54 mm
This 42.09ct tanzanite measures 18.87 × 16.21 × 9.54 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$ 19,028
US$ 452 / carat
Retail price
US$ 38,056
STARLANKA buys rough at source and cuts it in-house in Bangkok, so a stone reaches you without the layers of margin a tanzanite 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
No lab report supplied
This 42.09ct tanzanite is not currently accompanied by an independent lab report. One can be added before it ships — choose a laboratory from the certification option in the buy box above. Certification is optional: many clients buy on our own description, which stands behind the 14-day return either way.
- 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 tanzanite natural or lab-created?
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This STARLANKA tanzanite (SKU TN0747) is a natural, earth-mined tanzanite. STARLANKA sells only natural gemstones and does not offer synthetic or laboratory-created stones.
Has this tanzanite been treated?
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This STARLANKA tanzanite (SKU TN0747) 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 tanzanite (SKU TN0747) is not currently accompanied by an independent lab report. A report from GIA, GRS, AIGS, GIT, ICA GemLab, GUILD or AGR can be added before the stone ships.
What size is a 42.09ct oval tanzanite?
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This STARLANKA tanzanite (SKU TN0747) weighs 42.09 carats and measures 18.87 × 16.21 × 9.54 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 tanzanite (SKU TN0747) 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 tanzanite?
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This STARLANKA tanzanite (SKU TN0747) 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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Tanzanite Reviews(109)
“I had a custom Tanzanite ring done and my customer is super excited. The quality is superb! I'll be a long-term customer!”
Verified buyer·Oct 31, 2024
Oct 31, 2024
“The stone looked better than the picture displayed when I received it.”
Verified buyer·Jul 21, 2024
Jul 21, 2024
“The tanzanite is stunning and exactly as depicted in pictures, videos, and video call I had with Ashik prior to making the purchase. Fair price, GIA report verified specs and quality indicated in the website.”
Verified buyer·Apr 2, 2024
Apr 2, 2024
“I just wish I had ordered a slightly bigger gemstone. It is beautiful and reasonable priced. Star Lanka is now my favorite place to shop for gemstones.”
Verified buyer·Jan 13, 2024
Jan 13, 2024
“Suhail at Starlanka is amazing to work with. We have bought and commissioned several gems and rings from them. Best customer service and quality. 10/10 recommend this company!!”
Verified buyer·Oct 26, 2023
Oct 26, 2023
“beautiful stone, i hope repeat order next ya”
Verified buyer·Mar 28, 2023
Mar 28, 2023
“Gorgeous, thank you”
Verified buyer·Mar 11, 2023
Mar 11, 2023
