Results in Natural IGI Loose Diamonds & Gemstones

1-25 of 760

  • 7.85-Carat IGI-Certified Natural Ethiopian Opal with Multi-Colour Flashes

    7.85-Carat IGI-Certified Natural Ethiopian Opal with Multi-Colour Flashes

    Gemstone : Natural Colorless / White Opal Color : Pure White With Multi-Color Flashes. Shape: Oval Treatment: None (Natural & Untreated). Pcs: 1 Optical Effect: Very Strong Iridescence (Play of Color).
    £687.00
    From India
    Available for Best Offeror Best Offer
    Free P&P
  • NATURAL Blue Sapphire 1.03ct TOP GRADE Round Diamond Cut IGI CERTIFIED Untreated

    NATURAL Blue Sapphire 1.03ct TOP GRADE Round Diamond Cut IGI CERTIFIED Untreated

    Nearly all gem quality pink sapphires are at least heat treated to help improve colour and sometimes clarity. 100% Natural Sapphire with stunning bright blue colour. Fully certified by IGI in Antwerp, one of their best and most well equipped gem labs.
    £225.00
    Available for Best Offeror Best Offer
    £1.50 postage
  • NATURAL Loose Ceylon Blue Sapphire 0.87ct IGI CERTIFIED Oval Cut SRI LANKA

    NATURAL Loose Ceylon Blue Sapphire 0.87ct IGI CERTIFIED Oval Cut SRI LANKA

    The colour on this stone is stunning, a very bright and vivid colour. Natural Sapphire with stunning vivid blue colour. Fully certified by IGI in Antwerp, one of their best and most well equipped gem labs.
    £285.00
    Available for Best Offeror Best Offer
    £1.50 postage
  • NATURAL Ceylon Pink Purple Sapphire 1.07ct IGI CERTIFIED Oval Cut SRI LANKA

    NATURAL Ceylon Pink Purple Sapphire 1.07ct IGI CERTIFIED Oval Cut SRI LANKA

    The colour on this stone is stunning, a very bright and vivid colour. 100% Natural Sapphire with stunning vivid pink-purple colour. Fully certified by IGI in Antwerp, one of their best and most well equipped gem labs.
    £220.00
    Available for Best Offeror Best Offer
    £1.50 postage
  • Natural UNTREATED Deep Purple Sapphire 1.15ct IGI CERTIFIED Unheated Rare Ceylon

    Natural UNTREATED Deep Purple Sapphire 1.15ct IGI CERTIFIED Unheated Rare Ceylon

    This stone is totally untreated and unheated which is very rare for sapphires. Particularly where the colour is so vivid and stone so clean! Confirmed as untreated on IGI report. Natural Sapphire with stunning Deep Pinkish Purple colour.
    £375.00
    Available for Best Offeror Best Offer
    £1.50 postage
  • NATURAL Pink Sapphire 0.86ct TOP GRADE Round Diamond Cut IGI CERTIFIED Untreated

    NATURAL Pink Sapphire 0.86ct TOP GRADE Round Diamond Cut IGI CERTIFIED Untreated

    Nearly all gem quality pink sapphires are at least heat treated to help improve colour and sometimes clarity. This stone is totally untreated and unheated which is very rare for pink sapphires. Particularly where the colour is so vivid!
    £185.00
    Available for Best Offeror Best Offer
    £1.50 postage
  • Natural DEEP Blue Sapphire 1.33ct UNTREATED IGI Certified Unheated AUSTRALIA Gem

    Natural DEEP Blue Sapphire 1.33ct UNTREATED IGI Certified Unheated AUSTRALIA Gem

    This stone is totally untreated and unheated which is very very rare for blue sapphires. Confirmed as untreated on IGI report. Fully certified by IGI in Antwerp, one of the best and most well equipped gem labs.
    £260.00
    Available for Best Offeror Best Offer
    £1.50 postage
  • HUGE Natural Ceylon STAR Sapphire 4.92ct SRI LANKA UNTREATED Rare IGI CERTIFIED

    HUGE Natural Ceylon STAR Sapphire 4.92ct SRI LANKA UNTREATED Rare IGI CERTIFIED

    Huge Natural Star Sapphire 4.92 carat. Many star sapphires on the market are treated with heat or with diffusion to induce this star effect. This stone is all natural and totally untreated. Very good price for an untreated ceylon star sapphire of this size and quality.
    £345.00
    Available for Best Offeror Best Offer
    £1.50 postage
  • NATURAL Ceylon Yellow Sapphire UNTREATED 0.89ct IGI CERTIFIED Round Diamond Cut

    NATURAL Ceylon Yellow Sapphire UNTREATED 0.89ct IGI CERTIFIED Round Diamond Cut

    The colour on this stone is stunning, a very bright and vivid colour. An untreated Ceylon yellow sapphire with colour and clarity as good as this makes this a very rare and valuable gemstone. 100% Natural Sapphire with stunning Vivid Yellow colour.
    £230.00
    Available for Best Offeror Best Offer
    £1.50 postage
  • NATURAL Ceylon Purple Sapphire 1.39ct IGI CERTIFIED Oval Cut SRI LANKA Rare Gem

    NATURAL Ceylon Purple Sapphire 1.39ct IGI CERTIFIED Oval Cut SRI LANKA Rare Gem

    Fully certified by IGI in Antwerp, one of their best and most well equipped gem labs. 1.39 carat stone so a good size, with an excellent oval cut. The colour on this stone is stunning, a very bright and vivid colour.
    £295.00
    Available for Best Offeror Best Offer
    £1.50 postage
  • NATURAL Yellow Green Sapphire 1.24ct IGI CERTIFIED Cushion Cut AUSTRALIA Gem

    NATURAL Yellow Green Sapphire 1.24ct IGI CERTIFIED Cushion Cut AUSTRALIA Gem

    The colour on this stone is stunning, a very bright and vivid colour. 100% Natural Sapphire with stunning Bright Yellowish Green colour. Fully certified by IGI in Antwerp, one of their best and most well equipped gem labs.
    £195.00
    Available for Best Offeror Best Offer
    £1.50 postage
  • NATURAL Ceylon Pink Sapphire UNTREATED Sri Lanka 1.02ct IGI CERTIFIED GEM Rare

    NATURAL Ceylon Pink Sapphire UNTREATED Sri Lanka 1.02ct IGI CERTIFIED GEM Rare

    This stone is totally untreated and unheated which is very rare for sapphires. Particularly where the colour is so vivid and stone so clean! Confirmed as untreated on IGI report. Fully certified by IGI in Antwerp, one of their best and most well equipped gem labs.
    £345.00
    Available for Best Offeror Best Offer
    £1.50 postage
  • NATURAL Australia UNTREATED Blue Sapphire 1.34ct RARE IGI Certified Unheated Gem

    NATURAL Australia UNTREATED Blue Sapphire 1.34ct RARE IGI Certified Unheated Gem

    This stone is totally untreated and unheated which is very rare for blue sapphires. Confirmed as untreated on IGI report. Fully certified by IGI in Antwerp, one of the best and most well equipped gem labs.
    £395.00
    Available for Best Offeror Best Offer
    £1.50 postage
  • NATURAL Untreated Pink Sapphire 1.13ct Oval Cut IGI CERTIFIED Madagascar Gem

    NATURAL Untreated Pink Sapphire 1.13ct Oval Cut IGI CERTIFIED Madagascar Gem

    This stone is totally untreated and unheated which is very rare for sapphires. Particularly where the colour is so vivid and stone so clean! Confirmed as untreated on IGI report. Nearly all gem quality pink and purple sapphires are at least heat treated to help improve colour and sometimes clarity.
    £275.00
    Available for Best Offeror Best Offer
    £1.50 postage
  • Natural Loose CEYLON Pink Sapphire 0.94ct UNTREATED Sri Lanka IGI CERTIFIED Rare

    Natural Loose CEYLON Pink Sapphire 0.94ct UNTREATED Sri Lanka IGI CERTIFIED Rare

    This stone is totally untreated and unheated which is very rare for sapphires. Particularly where the colour is so vivid and stone so clean! Confirmed as untreated on IGI report. Nearly all gem quality pink and purple sapphires are at least heat treated to help improve colour and sometimes clarity.
    £260.00
    Available for Best Offeror Best Offer
    £1.50 postage
  • NATURAL Ceylon Pink Sapphire 0.94ct UNTREATED Emerald Cut IGI CERTIFIED Gem Rare

    NATURAL Ceylon Pink Sapphire 0.94ct UNTREATED Emerald Cut IGI CERTIFIED Gem Rare

    This stone is totally untreated and unheated which is very rare for sapphires. Particularly where the colour is fine and stone so clean! Confirmed as untreated on IGI report. Nearly all gem quality pink and purple sapphires are at least heat treated to help improve colour and sometimes clarity.
    £345.00
    Available for Best Offeror Best Offer
    £1.50 postage
  • NATURAL Ceylon Sapphire DEEP PINK 1.14ct Oval Cut UNTREATED IGI Certified Rare

    NATURAL Ceylon Sapphire DEEP PINK 1.14ct Oval Cut UNTREATED IGI Certified Rare

    This stone is totally untreated and unheated which is very rare for sapphires. Particularly where the colour is so vivid and stone so clean! Confirmed as untreated on IGI report. Nearly all gem quality pink and purple sapphires are at least heat treated to help improve colour and sometimes clarity.
    £400.00
    Available for Best Offeror Best Offer
    £1.50 postage
  • NATURAL Ceylon Blue Sapphire 0.70ct IGI CERTIFIED Triangle TrillionCut SRI LANKA

    NATURAL Ceylon Blue Sapphire 0.70ct IGI CERTIFIED Triangle TrillionCut SRI LANKA

    Natural Sapphire with stunning vivid blue colour and an excellent trillion/triangle cut. Fully certified by IGI in Antwerp, one of their best and most well equipped gem labs. Earth mined in Sri Lanka, source of some of the finest sapphires in the world.
    £205.00
    Available for Best Offeror Best Offer
    £1.50 postage
  • NATURAL Deep Purple Sapphire 1.34ct UNTREATED Rare IGI CERTIFIED Unheated Oval

    NATURAL Deep Purple Sapphire 1.34ct UNTREATED Rare IGI CERTIFIED Unheated Oval

    This stone is totally untreated and unheated which is very rare for purple sapphires. Particularly where the colour is so strong and vivid Confirmed as untreated on IGI report. 100% Natural Sapphire with stunning deep purple colour.
    £295.00
    Available for Best Offeror Best Offer
    £1.50 postage
  • NATURAL Pink Sapphire 0.92ct UNTREATED Rare IGI CERTIFIED Unheated Pear Cut Gem

    NATURAL Pink Sapphire 0.92ct UNTREATED Rare IGI CERTIFIED Unheated Pear Cut Gem

    This stone is totally untreated and unheated which is very rare for pink sapphires. Particularly where the colour is so vivid! Confirmed as untreated on IGI report. Nearly all gem quality pink sapphires are at least heat treated to help improve colour and sometimes clarity.
    £285.00
    Available for Best Offeror Best Offer
    £1.50 postage
  • NATURAL Green Sapphire 1.12ct IGI CERTIFIED Marquise Cut UNTREATED Gem Rare

    NATURAL Green Sapphire 1.12ct IGI CERTIFIED Marquise Cut UNTREATED Gem Rare

    The colour on this stone is stunning, a very bright and vivid colour. Fully certified by IGI in Antwerp, one of their best and most well equipped gem labs. A green sapphire with colour and clarity as good as this makes this a very rare and valuable gemstone.
    £255.00
    Available for Best Offeror Best Offer
    £1.50 postage
  • IGI CERTIFIED 2.32 Cts Untreated Blue Sri Lanka Star Sapphire Oval Cabochon

    IGI CERTIFIED 2.32 Cts Untreated Blue Sri Lanka Star Sapphire Oval Cabochon

    Product Star Sapphire. Shape Oval Cabochon. Origin Sri Lanka. Colour Moderate Blue. Enlarge picture taken from genuine stone on sale. Color may not appear as exactly as in real life due to variations between the computer monitors.
    £748.00
    From Germany
    Was: Previous price£850.00
    Available for Best Offeror Best Offer
    Free P&P
  • IGI CERTIFIED 2.74 Cts Untreated Blue Sri Lanka Star Sapphire Oval Cabochon

    IGI CERTIFIED 2.74 Cts Untreated Blue Sri Lanka Star Sapphire Oval Cabochon

    Product Star Sapphire. Shape Oval Cabochon. Origin Sri Lanka. Colour Moderate Blue. Enlarge picture taken from genuine stone on sale. Color may not appear as exactly as in real life due to variations between the computer monitors.
    £879.00
    From Germany
    Available for Best Offeror Best Offer
    Free P&P
  • Ceylon STAR Sapphire 0.92ct SRI LANKA UNTREATED Rare IGI CERTIFIED Cabochon

    Ceylon STAR Sapphire 0.92ct SRI LANKA UNTREATED Rare IGI CERTIFIED Cabochon

    Very good price for an untreated ceylon star sapphire of this size and quality. Don't miss out on a bargain! Natural untreated Star Sapphire. Earth mined in Sri Lanka, source of the finest Star sapphires in the world.
    £140.00
    Available for Best Offeror Best Offer
    £1.50 postage
  • Ceylon STAR Sapphire 0.66ct SRI LANKA UNTREATED Rare IGI CERTIFIED Cabochon

    Ceylon STAR Sapphire 0.66ct SRI LANKA UNTREATED Rare IGI CERTIFIED Cabochon

    Very good price for an untreated ceylon star sapphire of this size and quality. Don't miss out on a bargain! Natural untreated Star Sapphire. Earth mined in Sri Lanka, source of the finest Star sapphires in the world.
    £105.00
    Available for Best Offeror Best Offer
    £1.50 postage

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