On request
Loose Stones
Certified diamonds and coloured gemstones, sourced for you.
XVI sources loose stones on request — natural or lab-grown diamonds, sapphires, emeralds and other coloured gemstones — each accompanied by an independent certificate. Tell us the stone, the size and the budget you have in mind, and you will receive a personal selection and quote.
Natural or lab-grown
Both are real diamond. The difference is origin and price — we explain the trade-offs plainly and quote for whichever you prefer.
Certified
Every stone is delivered with an independent grading certificate, so carat weight, colour, clarity and cut are documented before you decide.
Personal
One person reads every request and answers personally — usually within one business day. Stones can be set into any XVI piece or supplied loose.