Looking for a Calibrated or Custom-cut Gemstones? Let Us Source It for You.
Natural coloured gemstones supplied to your design requirements—for jewellery designers, goldsmiths and producers.
Through our trusted sourcing and cutting partners in Sri Lanka, Zentha brings material selection and skilled craftsmanship together. Tell us the gemstone type, colour, dimensions and cutting specifications you need, and we will source suitable material and coordinate cutting to the agreed requirements.
From an individual commission to matched pairs and production batches, we offer a personal approach to your project.
Calibrated Gemstones
Gemstones supplied in standard sizes and shapes for your jewellery designs. Dimensions, tolerances, quality and quantities are agreed before production, with colour matching available to suit your requirements.
Custom-Cut Gemstones
Have a particular size, shape or design in mind? Share your measurements, technical drawing or reference images. We assess material availability and cutting feasibility, then provide a quotation based on your specifications.
We handle both sourcing and cutting, so you can work with one partner throughout the process.
Matched Pairs & Sets
Carefully selected and cut gemstones for earrings, coordinated pieces and jewellery collections. Matching is guided by the colour, dimensions, shape and overall appearance required for your design.
How It Works: Simple & Personal
- Share your requirements
Tell us the gemstone type, colour, shape, dimensions, quantity, budget and preferred delivery date. Include drawings or reference images where available. - Review our proposal
We confirm sourcing options, cutting feasibility, specifications, pricing and estimated lead time. - Approve and proceed
Once the details are agreed, our Sri Lankan partners prepare the gemstones to the approved requirements. - Receive your gemstones
The finished stones are checked against the agreed specifications before dispatch. We retain your project details to support future enquiries and repeat orders, subject to material availability.
Clear Information. Personal Support.
We supply natural gemstones with transparent treatment disclosure. Origin information and laboratory report options are discussed according to the material and your documentation requirements.
Based in Denmark and closely connected to Sri Lanka’s gem trade, Zentha provides a dedicated point of contact from your first enquiry through to delivery.
Let’s discuss your next jewellery project.
Share your specifications with us to explore suitable materials, cutting options and pricing.