Natural emeralds, rubies, sapphires, and other gemstones.

Rare loose gemstones sourced from trusted suppliers worldwide.

Natural Emerald Gemstone Natural Blue Sapphire Gemstone Natural Ruby Gemstone
  • 🔒 Secure Checkout (SSL Encrypted)
  • 💎 Certified Gemstones – Authentic & Verified
  • 💳 Payments Accepted: Visa, Mastercard, Klarna, Apple Pay, Amazon Pay, UnionPay
  • 🇨🇳 UnionPay Accepted – For Chinese Customers
  • 🔄 14-Day Easy Returns
  • 🚚 Fast & Reliable Shipping, Worldwide Tracking, Duty Free Shipping For USA Customers Via USPS

Trusted Global Gemstone Dealer

SMS Gems is an established gemstone dealer with:

  • ✔ 5,995+ verified buyer feedback
  • ✔ thousands of gemstones sold worldwide
  • ✔ natural certified gemstones
  • ✔ secure international shipping

Verify our buyer feedback on Gem Rock Auctions

Description

Natural Zambian Emerald — 16.71ct | Deep Forest Green | AGRL Certified | Octagon Cut

A truly exceptional, large natural emerald from the Zambian mines — one of the world's premier sources for deep, richly saturated green gemstones. At over 16 carats, this is a rare, statement-sized stone with a deep forest green colour, strong saturation, and a bright, lively lustre. Stones of this size and quality from Zambia are seldom available on the open market.

✦ Gemstone Specifications

  • Weight: 16.71 carats
  • Shape & Cut: Octagon (Emerald Cut)
  • Dimensions: 16.08 × 13.21 × 9.42 mm
  • Colour: Deep forest green — rich and strongly saturated
  • Clarity: Transparent, moderately included — clean table
  • Lustre: Very good — bright and lively
  • Origin: Zambia (natural)
  • Treatment: Minor colourless oil only (industry-standard, minimal)

✦ Certification

Independently certified by AGRL (African Gemological Research Laboratory), Certificate No. SA247494733. AGRL is a recognised gemological authority specialising in African origin stones. Your certificate confirms the stone's natural origin, weight, dimensions, colour, and treatment status.

✦ About Zambian Emeralds

Zambia is one of the world's top three emerald-producing countries, alongside Colombia and Brazil. Zambian emeralds are renowned for their deep, slightly bluish-green colour and excellent transparency. The Kafubu mining region produces stones with a distinctive richness that is highly sought after by jewellers and collectors worldwide.

✦ Authenticity & Our Guarantee

  • 100% natural emerald — not synthetic, not lab-grown
  • Independently AGRL certified
  • All photos are original, unedited, taken in natural daylight without filters
  • Images are highly magnified — the stone may appear more included in photos than in real life
  • This is the exact stone you will receive — one of a kind

✦ Ideal For

A stone of this size is suited for a bespoke centrepiece ring, a large pendant, or a high-end jewellery commission. Its generous dimensions and deep colour make it a dramatic, eye-catching choice for any fine jewellery setting.

✦ Shipping

Ships duty-free to the USA via USPS. Fully insured and securely packaged. International shipping available — contact us for details.

✦ Questions?

We're happy to answer any questions, provide additional photos or video, or discuss setting options before you purchase. Please reach out — we want you to be completely confident.

Product form
🔍 Certification & Verification

Our gemstones are certified by trusted labs. You can verify gemstones at the following labs:
✨ We ensure every gemstone is authentic and certified for your peace of mind.

16.71ct Natural Emerald Deep Forest Green AGRL Certified Octagon Cut Loose Gemstone

    Natural Zambian Emerald — 16.71ct | Deep Forest Green | AGRL Certified | Octagon CutA truly exceptional, large natural emerald...

    $3,900.00

    1 in stock

    • Shipped today? Order within: Jul 06, 2026 17:00:00 +0300

      • Guaranteed secure & safe checkout.

        shop pay

      Description

      Natural Zambian Emerald — 16.71ct | Deep Forest Green | AGRL Certified | Octagon Cut

      A truly exceptional, large natural emerald from the Zambian mines — one of the world's premier sources for deep, richly saturated green gemstones. At over 16 carats, this is a rare, statement-sized stone with a deep forest green colour, strong saturation, and a bright, lively lustre. Stones of this size and quality from Zambia are seldom available on the open market.

      ✦ Gemstone Specifications

      • Weight: 16.71 carats
      • Shape & Cut: Octagon (Emerald Cut)
      • Dimensions: 16.08 × 13.21 × 9.42 mm
      • Colour: Deep forest green — rich and strongly saturated
      • Clarity: Transparent, moderately included — clean table
      • Lustre: Very good — bright and lively
      • Origin: Zambia (natural)
      • Treatment: Minor colourless oil only (industry-standard, minimal)

      ✦ Certification

      Independently certified by AGRL (African Gemological Research Laboratory), Certificate No. SA247494733. AGRL is a recognised gemological authority specialising in African origin stones. Your certificate confirms the stone's natural origin, weight, dimensions, colour, and treatment status.

      ✦ About Zambian Emeralds

      Zambia is one of the world's top three emerald-producing countries, alongside Colombia and Brazil. Zambian emeralds are renowned for their deep, slightly bluish-green colour and excellent transparency. The Kafubu mining region produces stones with a distinctive richness that is highly sought after by jewellers and collectors worldwide.

      ✦ Authenticity & Our Guarantee

      • 100% natural emerald — not synthetic, not lab-grown
      • Independently AGRL certified
      • All photos are original, unedited, taken in natural daylight without filters
      • Images are highly magnified — the stone may appear more included in photos than in real life
      • This is the exact stone you will receive — one of a kind

      ✦ Ideal For

      A stone of this size is suited for a bespoke centrepiece ring, a large pendant, or a high-end jewellery commission. Its generous dimensions and deep colour make it a dramatic, eye-catching choice for any fine jewellery setting.

      ✦ Shipping

      Ships duty-free to the USA via USPS. Fully insured and securely packaged. International shipping available — contact us for details.

      ✦ Questions?

      We're happy to answer any questions, provide additional photos or video, or discuss setting options before you purchase. Please reach out — we want you to be completely confident.

      Login

      Forgot your password?

      Don't have an account yet?
      Create account