Gad and Co.

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Gad and Co. For over 30 years, Gad & Co. has been an industry leader of fine jewelry and diamonds/gemstones. We Gad & Co. for the last 30+ years and counting.

has pioneered and surpassed industry standards of excellence and innovation within the world of High Jewelry. We purvey miracles of nature- the most exceptional diamonds and gemstones in the world, accredited by the most prestigious grading agencies, such as with GIA, AGL, and SSEF. maintains a presence in the United States of America and Hong Kong. Our stunning collection generates as much investment value as it does awe. We believe the cornerstones of business are transparency, expertise, and above all, honesty, and we live by these hallmarks. We service elite clientele and there is a reason they have depended on Gad & Co. At Gad and Co, we strive to build relationships that -like diamonds- last a lifetime. Contact us today and see how we can meet your unique requirement.

06/10/2026

The legendary and rare….

Cornflower Blue Sapphire. 10.10 carats of unheated Ceylon sapphire.

AGL certified as Violetish Blue, this natural sapphire has excellent luster, transparency, and eye-clean clarity. Its Ceylon origin and lack of heat treatment make the stone particularly desirable.

The radiant-cut center is surrounded by 1.36ct of baguette diamonds and 1.90ct of round diamonds, all set in handcrafted 18K white gold.

SKU - GA0384

28/09/2026

This sapphire color has its own name, and it’s one of the rarest in the world.

Padparadscha comes from Sanskrit words meaning lotus and color. Gemologists also call it the sunrise color. A sapphire that is only orange or only pink is not unusual. Padparadscha sits exactly between the two, and stones with that balance are very rare.

This one is 9.10 carats, from Ceylon (Sri Lanka), with no heat treatment. Certified by both AGL and SSEF, with two appendix letters explaining its significance. AGL notes that a padparadscha this size is among very few gem quality stones from any source.

SKU: GA0802

24/09/2026

No oil. 6.19 carats. AGL certified. Colombian.

16/09/2026

An exceptional pairing of two legendary ruby and sapphire origins.

This stack ring features 8-carats of unheated Kashmir sapphire, Burma ruby, and diamonds set in a substantial multi-band design.

Both coloured stones are AGL certified, with the Kashmir sapphire noted for its exceptional colour, clarity, transparency and lustre.

Email or call for in person viewing.

14/09/2026

17 carats. Colombian. Minor oil.

Everybody chases no-oil emeralds, but color is what actually sets the price. This stone has excellent saturation and clarity.

Octagon cut, platinum, AGL certified.

09/09/2026

47.10 carats of unheated Ceylon sapphire.

The stone is set in a vintage platinum and 18K yellow gold ring, surrounded by 50 natural Old European-cut diamonds in a hand-finished floral motif with milgrain detailing.

47.10 carats | No heat | Ceylon origin

SKU J17231

If you’re in HK, and you’re interested, DM us with the sku # above to make an appointment.

02/09/2026

Colombian emeralds this colour are among the most sought after in the world, and this one has the documentation to match.

This 6.79-carat Colombian emerald has rich green saturation, strong brilliance and excellent transparency, with the dark green hue balanced by bright green lustre.

It is AGL certified with minor oil and is likely to have originated from the legendary Muzo region of Colombia.

Set with 1.92 carats of diamonds in 18K white and yellow gold.

SKU GA1031

01/09/2026

GREEN DIAMONDS 💎

Natural fancy green is one of the rarest diamond colours.

The colour develops when a diamond is exposed to natural radiation in the earth over an immense period of time. This radiation alters the diamond’s crystal structure, producing its green colour.

The difficulty is proving that the colour occurred naturally. Diamonds can also be artificially irradiated to produce green, which is why a GIA report is particularly important.

On the report, look under “Color Origin.” For a naturally coloured green diamond, you want to see: Natural.

For serious coloured diamonds, that single word matters enormously.

Screenshot this caption for future reference.

Gad & Co.
131 Queen’s Road Central, Central, Hong Kong
DM us to get in touch.

31/08/2026

A 108.04 carat carved natural emerald.

GRS certified and originating from the Ural region of Russia, this pastel green emerald shows minor to moderate oil treatment. The carved stone is set in 18K yellow gold with 6.50 carats of natural diamonds and 3 carats of cabochon blue sapphires. (ASSAY⁠)

The complete necklace weighs 165.28 grams, with a substantial textured gold construction and crown motif.

Screenshot this caption for the details.

Gad & Co.
131 Queen’s Road Central, Central, Hong Kong
DM us to get in touch.

28/08/2026

Ruby or pink sapphire?

This 3.8 carat unheated stone sits right on one of the most interesting colour boundaries in gemstones.

Ruby and sapphire are actually the same mineral: corundum. The difference is colour. Ruby is classified by its dominant red colour, while corundum that falls more clearly on the pink side is generally classified as pink sapphire.

This stone has a pinkish-red tone, but red is dominant, making it a ruby.

So, what do you see first: ruby or pink sapphire?

Screenshot this caption to remember the distinction.

Gad & Co.
131 Queen’s Road Central, Central, Hong Kong
DM us to get in touch.

Address

131 Queens Road Central
Hong Kong

Opening Hours

Monday 10:30 - 19:00
Tuesday 10:30 - 19:00
Wednesday 10:30 - 19:00
Thursday 10:30 - 19:00
Friday 10:30 - 17:30
Sunday 10:30 - 19:00

Telephone

+85225440002

Website

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