Catalog · We Certify and Sell

The Nine Sacred Stones & beyond.

Diamond House Gem Lab offers a curated catalog of the nine Navratna gemstones and a wide selection of semi-precious stones — each personally evaluated, certified and available for purchase. To enquire about a specific stone, weight or origin, reach out for a private viewing.

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Navratna

The Nine Sacred Gemstones

Worn together or singly, the Navratna align with the nine celestial influences in classical Indian gemology. Each stone is offered loose or set to commission.

01Sun (Surya)
Ruby
Manik
The king of gemstones. A red variety of corundum prized for its 'pigeon blood' colour, vivid fluorescence and exceptional hardness (9 on Mohs). Finest origins include Burma (Mogok), Mozambique and Madagascar.
Available certified — enquire to purchase
02Moon (Chandra)
Pearl
Moti
An organic gem formed within molluscs. Valued for its soft lustre, orient and surface purity. Natural and cultured varieties from the Persian Gulf, South Sea and Akoya waters are most sought after.
Available certified — enquire to purchase
03Mars (Mangal)
Red Coral
Moonga
A precious organic gem from the deep Mediterranean. Hand polished into cabochons and beads, prized for an even, oxblood-to-salmon red and a glassy polish.
Available certified — enquire to purchase
04Mercury (Budh)
Emerald
Panna
A beryl coloured by chromium. Renowned for its vivid green and characteristic 'jardin' inclusions. Colombian (Muzo, Chivor), Zambian and Brazilian origins are most prized.
Available certified — enquire to purchase
05Jupiter (Guru)
Yellow Sapphire
Pukhraj
A corundum of golden to canary yellow. Valued for clarity, even saturation and bright dispersion. Ceylon (Sri Lanka) is the classical source.
Available certified — enquire to purchase
06Venus (Shukra)
Diamond
Heera
Pure crystalline carbon — the hardest natural substance (10 on Mohs). Graded by the four Cs: cut, colour, clarity and carat. Both natural and laboratory-grown varieties are certified.
Available certified — enquire to purchase
07Saturn (Shani)
Blue Sapphire
Neelam
A corundum of velvety cornflower to royal blue. Kashmir, Burma and Ceylon stones command the highest premium for their saturation and silky lustre.
Available certified — enquire to purchase
08Rahu
Hessonite Garnet
Gomed
A cinnamon to honey-brown grossular garnet with a characteristic 'heat-wave' inclusion pattern. Primarily sourced from Sri Lanka.
Available certified — enquire to purchase
09Ketu
Cat's Eye
Lehsunia
Chrysoberyl cut en cabochon to reveal a sharp, silver-white 'eye' of chatoyancy that glides across a honey or apple-green body. A rare and protective stone.
Available certified — enquire to purchase

Semi-Precious

A Wider Spectrum

Coloured stones for every wardrobe and occasion. Hand-selected for colour, clarity and cutting quality.

Amethyst
Violet quartz coloured by iron and natural irradiation. Brazilian and Uruguayan stones offer the deepest 'Siberian' purple.
Citrine
Golden to madeira-orange quartz. Bright, durable and available in large clean sizes.
Topaz
From imperial peach-pink to electric Swiss and London blue. Hardness 8 makes it ideal for everyday wear.
Aquamarine
Pale to vivid sea-blue beryl. Famed for clarity, large clean crystals and oceanic glow.
Peridot
An olive to lime-green olivine, often of volcanic or pallasite-meteorite origin.
Tourmaline
Spans the entire colour spectrum — neon Paraíba, watermelon, indicolite and rubellite are most coveted.
Tanzanite
A trichroic blue-violet zoisite found only at Merelani, Tanzania.
Spinel
Long mistaken for ruby. Burmese 'Jedi' red, hot pink and cobalt blue spinels are highly collectable.
Garnet (Rhodolite & Tsavorite)
From raspberry rhodolite to vivid chrome-green tsavorite — a diverse and durable family.
Lapis Lazuli
Deep ultramarine rock flecked with golden pyrite. The classical Afghan source is unmatched.
Turquoise
Sky-blue to robin's-egg copper phosphate. Persian and Sleeping Beauty (Arizona) are benchmark origins.
Moonstone
Orthoclase feldspar prized for adularescence — a floating blue or rainbow sheen across the cabochon.
Opal
Hydrated silica with play-of-colour. Australian black, white and Ethiopian welo opals lead the market.
Onyx
A solid black chalcedony, beautifully matched with gold and diamonds for evening jewellery.
Carnelian
Translucent orange-red chalcedony. A traditional Indian talisman stone.
Iolite
A trichroic violet-blue cordierite, sometimes called 'water sapphire'.
Zircon
A high-dispersion natural silicate — its blue, white and golden varieties show remarkable fire.
Kunzite
Lilac-pink spodumene. Best viewed in daylight; cuts ideally as long, elegant emerald cuts.
Rose Quartz
Soft, milky pink quartz, often translucent. A staple of meditative and decorative jewellery.
Smoky Quartz
Champagne to deep-cognac quartz. Large clean cuts make it a wardrobe essential.

Acquisitions

Looking for a particular stone?

Every purchase from Diamond House Gem Lab arrives with its own authentication certificate and QR-verifiable record. Tell us the species, carat and origin you have in mind — we will source, certify and dispatch.

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The Nine Sacred Gemstones

Ruby

Pearl

Red Coral

Emerald

Yellow Sapphire

Diamond

Blue Sapphire

Hessonite Garnet

Cat's Eye

A Wider Spectrum

Looking for a particular stone?