Loose Diamonds Buyer Toronto

GoldAgo purchases all types of loose diamonds including GIA-certified stones, AGS-certified diamonds, EGL-certified diamonds, and uncertified diamonds. We buy round brilliants and all fancy shapes including princess, cushion, oval, emerald, pear, marquise, radiant, asscher, and heart cuts. Fancy colored diamonds and diamond melee are also purchased. Diamonds range from small melee under 0.01 carats to large stones over 5 carats. Both certified and non-certified stones are welcome.

No certificate is required to sell your diamond. We purchase uncertified diamonds regularly, evaluating them with the same 4Cs standards used by major laboratories. Our GIA-trained gemologists provide comprehensive grading assessment for uncertified stones. While certified diamonds often command premium pricing, uncertified diamonds still have substantial value based on quality. If you have a certificate, bring it—we verify certificates and factor them into pricing.

We verify diamond certificates by matching them to the actual stones. Laser inscriptions on girdles are checked against certificate numbers. Measurements, weight, and grading characteristics must match the documented stone. We verify certificate authenticity using laboratory databases and direct communication with certifying labs. This verification prevents fraud and ensures valuation based on the diamond's true characteristics rather than potentially misrepresented documentation.

Round brilliant diamonds typically offer the strongest resale value due to universal demand and standardized cutting. Well-cut round diamonds with GIA Triple Excellent grades are particularly liquid. Among fancy shapes, princess cuts and cushion cuts have strong demand. Elongated shapes like marquise and pear have more limited markets. Regardless of shape, cut quality significantly affects value—well-cut stones always command better prices than poorly cut stones of similar weight and clarity.

Diamond pricing is based on the 4Cs: cut, color, clarity, and carat weight, along with current wholesale market prices. Certified diamonds are priced according to certificate grades and current wholesale price lists for certified stones. Uncertified diamonds are valued based on our gemologist's grading assessment. Shape affects pricing, with rounds commanding premiums. Market factors like supply and demand for specific characteristics also influence pricing. We explain all valuation factors when presenting offers.

Yes, we purchase fancy colored diamonds including yellow, pink, blue, green, champagne, and cognac colors. Natural fancy color requires laboratory verification to distinguish from treated stones. GIA colored diamond certificates are preferred for accurate valuation. Color intensity from faint to fancy deep dramatically affects value, with intense and vivid colors commanding premiums. Treated colored diamonds are purchased with full disclosure and appropriate pricing based on treatment type.

We purchase treated and enhanced diamonds with full disclosure. Common treatments include fracture filling, laser drilling, HPHT (high-pressure high-temperature), and irradiation. Treated diamonds are valued differently than untreated diamonds, with treatment type and extent affecting value. We identify treatments using professional gemological equipment. Disclosure is required when selling treated diamonds—we accurately represent treatment status and value accordingly. Treated diamonds still have value based on their appearance and treated stone markets.

Yes, we purchase diamond melee and small stones under 0.20 carats. We buy both individual small stones and accumulated parcels from jewelry manufacturing or collection. Well-matched parcels of similar quality and size are preferred but not required. Melee is evaluated for color, clarity, and cut quality. Broken single stones and accumulated production scrap are accepted. Small diamonds add up quickly in weight and value—large parcels can represent substantial value.

Certification before selling is often not cost-effective. For most diamonds, the cost of certification exceeds the value increase in sale price. Certification typically makes sense for large diamonds over 1.5-2.0 carats where the premium for certified stones justifies the cost. For smaller stones or diamonds with quality issues that would result in lower grades, certification costs usually aren't recovered. We provide fair market evaluation without requiring certification, though existing certificates are factored into pricing.

Most loose diamond transactions complete within 30-45 minutes. Our gemologists examine and evaluate diamonds, verify certificates, research market prices, and present offers. Once you accept our offer, payment is issued immediately. No waiting periods for payment processing or clearance. For large diamonds over 2 carats or multiple stones requiring detailed evaluation, allow additional time. Same-day service is available for most transactions—call ahead for large or complex sales.