Gemstones
Diamonds are our focus, but many clients want color. We broker ruby, sapphire, emerald and other gemstones the same way: we find them, verify them and deliver them.
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Popular stones
Ruby and sapphire are the same mineral, corundum. Red corundum is ruby, and every other color is sapphire. Hardness on the Mohs scale (diamond is 10) tells you how well a stone handles daily wear, which matters most for rings.
Gemstone Color Hardness Ruby Red 9 Sapphire Blue, plus pink, yellow and others 9 Emerald Green 7.5–8 Spinel Red, pink, blue and others 8 Alexandrite Shifts color between daylight and lamplight 8.5 Aquamarine Blue to blue-green 7.5–8 Tourmaline Nearly every color 7–7.5 Tanzanite Blue-violet 6.5–7 -
What sets the price
Color comes first. Buyers look at the hue, how light or dark it is, and how strong it is. Clarity, cut and carat weight still count, but clarity is judged by the type of stone: emeralds almost always have visible inclusions, while a clean blue sapphire is expected to look clear.
Origin can add a premium for certain stones, such as Colombian emerald or Burmese ruby, when a lab report supports it.
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Treatments and lab reports
Most colored gemstones are treated. Heating is routine for ruby and sapphire, and emeralds are commonly filled with oil or resin. Treatment is acceptable when disclosed, but it changes the price. Untreated stones of good quality are rarer and cost more.
We ask for a report from a recognized gem lab, such as GIA, SSEF, Gübelin or AGL, that identifies the stone, states whether it is natural, and records any treatment. For high-value stones the report can also state origin.
How we broker gemstones
Brief
Tell us the stone, color, size and budget.
Source
We search our network and send options.
Verify
We check the lab report, treatment and the stone itself.
Deliver
Insured shipping to your door.
Looking for a specific stone?
Send us the details and we will tell you what is realistic for your budget.
Request a quote