Detailed Stone Information
Review the specifications, media and individual stone information supplied for each gemstone.
Imperial Time · Kensington, London
Source a Coloured Gemstone
Search current global coloured-gemstone availability, including sapphires, rubies, emeralds and many other gemstone varieties. Compare individual stone characteristics, pricing and certificate or report information where supplied, then purchase your chosen gemstone through Imperial Time or speak with our team about a bespoke piece.
Purchase through Imperial Time UK LtdKensington specialist supportLoose stone or bespoke route
Not sure where to begin? Ask a gemstone specialist on WhatsApp.
Buy a Loose GemstoneSearch current global availability, compare individual stone information and choose the gemstone itself.
Create Something BespokeChoose a gemstone, then discuss a suitable ring, pendant, earrings or another bespoke setting with Imperial Time.
A simple place to start
1 · Gemstone type2 · Colour3 · Shape4 · Budget5 · CaratThen refine with advanced filters
Looking for a gemstone already available from Imperial Time?
Browse stones held in Imperial Time's own current Shopify inventory, separately from the global sourcing selection.
Independent Reports Where Available
Laboratory and certificate/report information is shown only when it is supplied for the individual stone.
Imperial Time Purchase & Support
Your enquiry and purchase are handled by Imperial Time UK Ltd with specialist support available.
Kensington Specialist Support
Arrange a consultation with our team at 79 Kensington Church Street, London W8 4BG.
Coloured gemstone buying guidance
How to Choose a Coloured Gemstone
Coloured gemstones do not all follow the same grading rules as diamonds. Use the complete individual stone record and consider the factors below together.
Colour
Colour is often one of the most important visual and value considerations. Compare hue, tone and saturation as they appear in the available media.
Clarity
Different gemstone varieties naturally have different inclusion characteristics. A clarity label should be considered in the context of the gemstone type.
Cut
Shape and cutting style influence visual performance, proportions and how large a stone appears face-up. Compare dimensions as well as the stated shape.
Carat
Carat is a measure of weight, not physical face-up size alone. Different materials and proportions can make equal carat weights look different.
Certification
Where a recognised laboratory report exists, review the laboratory, report number and available PDF. Do not assume an uncertified stone has been independently reported.
Treatment & Origin
Many coloured gemstones may be treated, and origin can matter where reliably determined. If treatment or origin data is absent, Imperial Time does not infer it.
Popular sourcing searches
Sapphire, Ruby, Emerald & Other Coloured Gemstone Sourcing
Use the live gemstone search above to compare loose coloured gemstones currently available to source through Imperial Time. Availability changes, so the individual stone record remains the source of truth for specifications, price and report information.
Loose Sapphires
Search current sapphire availability by colour, shape, carat weight and the other specifications offered in the live gemstone feed. Review treatment, origin and laboratory information only where supplied for the individual stone.
Go to gemstone search ↑Loose Rubies
Compare available rubies using colour, shape, carat, dimensions and the individual stone media. Where treatment, origin or a laboratory report is supplied, review it as part of the complete record.
Go to gemstone search ↑Loose Emeralds
Compare available emeralds by colour, clarity characteristics, cut, carat weight and dimensions. Treatment and origin should never be assumed when those details are not supplied for the stone.
Go to gemstone search ↑Other Coloured Gemstones
Search tourmaline, aquamarine, spinel, garnet, opal, tanzanite, alexandrite and other gemstone varieties when available in the live sourcing feed.
Go to gemstone search ↑Tip: after opening the gemstone search, choose the gemstone type first, then refine colour, shape, budget and carat. Advanced filters can be used once you have a manageable shortlist.
Imperial Time bespoke jewellery
Create a Bespoke Piece Around Your Gemstone
Found a stone you love? Speak with Imperial Time about a suitable bespoke ring, pendant, earrings or another piece. Coloured-gemstone bespoke work is handled by our specialist team rather than implying an unsupported automated ring-mounting workflow.
Cut Gemstones Available NowShop coloured gemstones from Imperial Time's own current inventory.
Explore Fine Mineral SpecimensA separate collector route for mineral specimens rather than the faceted-gemstone sourcing journey.
Gemstone sourcing FAQs
Frequently Asked Questions
Practical guidance for sourcing loose coloured gemstones through Imperial Time.
Can I buy the gemstone loose?
Yes. The sourcing page is designed to let you search and select a coloured gemstone as a loose stone. You can also ask Imperial Time about creating a bespoke piece around a selected gemstone.
Can I source a sapphire, ruby or emerald specifically?
Yes. Use the Gemstone Type filter in the live search to choose sapphire, ruby, emerald or another supported gemstone variety, then refine the results by colour, shape, carat and other available filters.
Is every gemstone independently certified?
No. Certification varies by stone. Where a laboratory report is supplied, review the laboratory, report number and available certificate information in the individual gemstone record.
How are treatment and origin handled?
Where reliable treatment or geographic-origin information is supplied for an individual stone, it should be reviewed as part of the gemstone record. Missing information is not treated as proof that a stone is untreated or from a particular origin.
Can the gemstone be mounted automatically into an engagement ring?
This coloured-gemstone sourcing journey does not promise an automated mounting route. If you want jewellery made around a selected stone, contact Imperial Time so our specialist team can discuss the appropriate bespoke options.
Can I visit Imperial Time in Kensington?
Yes. You can book a consultation with our Kensington team at 79 Kensington Church Street, London W8 4BG. A globally sourced gemstone should not be assumed to be physically present in the showroom unless availability is specifically confirmed.
Prefer help narrowing the search?
Send Us a Gemstone Sourcing Brief
You do not need to know gemmological terminology. Tell us what matters to you and Imperial Time can help refine a search of global sourcing availability. Origin, treatment and laboratory-report preferences are requests rather than guarantees.
Kensington gemstone consultation
Speak with an Imperial Time Gemstone Specialist
Need help comparing a sourced gemstone or discussing a bespoke piece? Arrange a consultation with our Kensington team. Globally sourced stones are not assumed to be physically present in the showroom unless availability has been confirmed.
Independent review platforms
Customer Reviews & Reputation
Read current customer feedback about Imperial Time before arranging a consultation or completing a purchase.
Visit Imperial Time
Our Kensington Showroom
79 Kensington Church StreetLondon W8 4BG
Monday–Friday: 10:00–18:00
Saturday: Appointment only
Sunday: Closed
Kensington · View on Google Maps ↗