Green Colombian Emerald 10.30ct
Green Colombian Emerald 10.30ct
Green Colombian Emerald 10.30ct
US$ 16,301
10.3ct Colombian Emerald at US$ 1,583/ct
Certification?
| Weight | 10.3 ct |
| Shape / Cut | Rectangular / Emerald Cut |
| Color | Green |
| Clarity | I |
| Treatment | None |
| Origin | Africa |
| Dimensions | 13.86 x 11.22 x 9.05 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
Green
Indicative tonal range for this colour family. For reference only — screens vary.
This 10.3ct colombian emerald sits in the green range of the colombian emerald colour scale.
Clarity
I
This 10.3ct colombian emerald is graded I. Included: inclusions are easily visible to the naked eye.
Shape & size
Shown with a standard bank card · 85.6 × 54 mm
Hold a bank card against your screen and drag until the two match. The stone is then shown at its real size.
Rectangular
13.86 × 11.22 × 9.05 mm
This 10.3ct colombian emerald measures 13.86 × 11.22 × 9.05 mm. Carat weight describes a gemstone's mass rather than its dimensions, so always check the millimetres before buying.
Price
Our price
US$ 16,301
US$ 1,583 / carat
Retail price
US$ 32,602
At US$ 1,583 per carat, this stone is 100% above the typical US$ 792 for a more than 10 ct colombian emerald.
Price per carat of the 5 single colombian emeralds of more than 10 ct in stock now.
STARLANKA buys rough at source and cuts it in-house in Bangkok, so a stone reaches you without the layers of margin a colombian emerald 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 10.3ct colombian emerald 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 an insured express label ($50, deducted from the refund) 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 colombian emerald natural or lab-created?
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This STARLANKA colombian emerald (SKU PG0687) is a natural, earth-mined colombian emerald. STARLANKA sells only natural gemstones and does not offer synthetic or laboratory-created stones.
Has this colombian emerald been treated?
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This STARLANKA colombian emerald (SKU PG0687) is untreated. It is sold as a natural, untreated colombian emerald, with no heat or enhancement of any kind.
Does this stone come with a certificate?
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This STARLANKA colombian emerald (SKU PG0687) 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 10.3ct rectangular colombian emerald?
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This STARLANKA colombian emerald (SKU PG0687) weighs 10.3 carats and measures 13.86 × 11.22 × 9.05 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 colombian emerald (SKU PG0687) 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 colombian emerald?
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This STARLANKA colombian emerald (SKU PG0687) 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 an insured express (DHL or FedEx) return label; its $50 cost is deducted from the refund.
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Colombian Emerald Reviews(2)
“I was nervous doing this all online, sight unseen. However, the quality of the setting was fantastic! The band was a perfect width. Height for the stone aaa great. Plus they did a nice detail in. The gallery as an unexpected surprise.”
Verified buyer·Oct 10, 2025
Oct 10, 2025
“Very good customer service”
Verified buyer·Apr 14, 2022
Apr 14, 2022