All posts by arlingtonco

We are the finest manufacturer of diamond rings and jewellery in Hatton Garden. Specialising in engagement rings set with certified diamonds and top quality coloured stones mounted in platinum or 18ct gold, with fastidious attention to detail and customer service. Arlington & Co. have more than half a century's experience in the industry, you can be assured that we have the knowledge and experience to help you choose the perfect engagement ring, wedding ring or eternity ring. We will be happy to show you the different styles and cuts of diamonds available, together with options for setting and mounting. As manufacturers and designers, we pride ourselves both on the quality of the diamonds and the world-class handmade designs that we create.


sapphire-3It is said that one of the first engagement rings ever given held a beautiful blue Sapphire gemstone. Typically now when we think of engagement rings we envisage a diamond at it’s centre.


However, younger generations seem to want to try a less conventional approach when it comes to engagement ring design incorporating their own sense of unique style and how better to do this than with a coloured gemstone.


Let’s look into what gemstones are available and practical to wear everyday.



Sapphires are any colour of the mineral corundum other than red. The most desirable sapphires are generally those with an intense blue colour with plenty of sparkle and life, however, they can also come in an assortment of colours such as pink. They can be found in Brazil, Tanzania, Sri Lanka, Kashmir, Thailand, Madagascar and Australia. Colour: Shades of blue, pink, yellow & other various colours. With a hardness on the mohs scale of 9 they are perfect for everyday wear.



Rubies are the red variety of a mineral called Corundum. (The same family as sapphires). Natural occurring rubies are very rare and extremely rare in large sizes. They can be found in many regions around the world from India, East Africa, South America, and a few deposits in the United States. Colour: pinkish red or deep, rich red colour Hardness: 9 perfect for engagement rings.



Emeralds are part of the Beryl family. Clear stones with vibrant colours command the highest prices. They can be found in Brazil, Pakistan, Russia, East Africa, India, Madagascar and Columbia, at this point in time the best emeralds come from Colombia. Colour: Emeralds come in many shades of green and bluish green. Emeralds do need to be taken care of a little bit more than other gemstones as the hardness is 7.5 to 8 on the mohs scale. 


If you’re a bride who loves colour or a gentleman looking for the perfect ring for his unconventional partner, take some time to look beyond the colourless diamond. You’ll find beautiful engagement rings come in every color of the rainbow.

How to Read a GIA Diamond Grading Report


The GIA Diamond Grading Report includes an assessment of the 4Cs – Colour, Clarity, Cut, and Carat Weight – along with a plotted diagram of its clarity characteristics and a graphic representation of the diamond’s proportions. GIA issues the Diamond Grading Report for loose natural diamonds only, weighing 0.15 carats or more. For standard round brilliant cut diamonds falling in the report also includes a GIA Cut grade.

 1. DATE 

Date diamond was examined by GIA.


Unique GIA report number registered in GIA’s extensive global database.


The outline of the diamond (shape) and the pattern of the facet arrangement (cutting style).


Diamond dimensions listed as “minimum diameter – maximum diameter x depth” for round diamonds and “length x width x depth” for fancy-shaped diamonds.


Weight given in carats, recorded to the nearest hundredth of a carat. One carat is equal to 1/5 of a gram.


The absence of colour ranging from colourless to light yellow or brown when compared to GIA Master Color Comparison Diamonds. Graded on a D-to-Z scale. If “*” appears next to the colour grade, a colour treatment was detected.


The relative absence of inclusions and blemishes. Graded on a scale from Flawless to Included based on size, nature, number, position, and relief of characteristics visible under 10x magnification.


For standard, D-to-Z color, round brilliant diamonds. Cut grade incorporates the aspects of face-up appearance, design, and craftsmanship. Graded on a scale from Excellent to Poor.


Smoothness of the diamond’s surface, assessed on a scale ranging from Excellent to Poor.


Exactness of the diamond’s outline, and the shape, placement, and alignment of its facets, assessed on a scale ranging from Excellent to Poor.


Strength and color of the diamond when viewed under long-wave ultraviolet light. A fluorescence description of “none” represents a range of fluorescence from Indiscernible to Very Faint. Used for identification purposes.


Any text, symbols, logos, or a unique GIA report number inscribed on the diamond’s girdle.


Additional identifying characteristics or features that are not otherwise represented on the report. If a treatment is detected, such as laser drilling, it would be described here.


Graphic profile representation of the diamond’s actual proportions.


Approximates the shape and cutting style of the diamond. Symbols indicate the type or nature, position, and the approximate size of a clarity characteristic.


Lists the characteristics and symbols shown on the plotting diagram, if present.


Illustrates the GIA Colour grades and their relative positions in the GIA Diamond Colour Grading System.


Illustrates the GIA Clarity grades and their relative positions in the GIA Diamond Clarity Grading System.


Illustrates the GIA Cut grades and their relative position in the GIA Diamond Cut Grading System. Available for standard round brilliant cut diamonds in the D-to-Z color range and Flawless-to-I3 clarity range.


Microprinting, security screens, watermarks, a two-dimensional barcode, a hologram, and sheet numbering safeguard report integrity and facilitate document authentication.


A two-dimensional barcode that, when scanned, verifies data on the report against the GIA database.


What to consider when purchasing an engagement ring.


Deciding to pop the question to your loved one can be one of the most exciting moments of your life. Whether you decide to surprise them with a ring or choose it together there are a few things to consider to make your experience more pleasurable.


Do your research. Look online for reputable retailers, how long have they been established? Do they have good reviews? What is the aftercare service like? How is the ring made? What happens if my beloved doesn’t like the ring? A good Jeweller will not mind answering any of your questions and be happy to advise you.


What should the main stone be?

Diamonds are probably the stone of choice for many, however coloured stones are popular too. By now your other half may have given you some hints about what they would like, but if that is not the case staying classic is probably a safe place to start.

A Round Brilliant Cut Diamond Solitaire would come under the most classic style in either a 4 or 6 claw setting, and made from platinum or gold.


Will a wedding ring sit flush with the design I choose?

This may not seem an important factor at the moment, however it can be upsetting when your partner can’t have the wedding ring they really love as it does not fit up against your chosen design. Gaps in between rings are not favourable. Checking first saves having to have shaped wedding rings or a ring that is second best.


Once you have proposed, will the ring need resizing?

Generally this is the case so ask the Jeweller how this works? Really a simple resizing should not be charged for a reputable jewellers will not charge unless more stones need to be added or a lot more metal.


Aftercare service is also an important factor. It shows the jewellery shop you have purchased from doesn’t just want to take your money and move on to the next customer.

Make sure you are offered a complementary professional cleaning service at least once a year. Giving your ring a little MOT will ensure that it looks great and if any refurbishment or repair is needed you are advised before you lose a stone.

Enjoy your shopping experience remember it should be a happy and enjoyable time, the shop you choose to buy from will make or break it.





18770What to Look For When Buying an Emerald

Colour: The most important quality factor in the May birthstone is colour. Emeralds that are bluish green to green, with strong to vivid colours are highly prized. Emeralds that are transparent are especially valuable.

Clarity: Emeralds typically contain inclusions that are visible to the naked eye, because of this, jewellers understand and accept the presence of inclusions in emeralds. Eye clean emeralds are especially valuable because they’re so rare.

Emerald inclusions are often described as looking mossy or garden like. They’re sometimes called jardin, which is French for “garden.”

In coloured stones, transparency and clarity are closely linked. This is especially true for emeralds. Jewellery professionals generally accept some eye visible inclusions in higher quality emeralds. But when the quantity or nature of the inclusions has a negative effect on transparency and clarity, they also dramatically reduce value.

Cut: Emerald crystals are difficult to cut. Almost all rough emeralds have significant fractures, (sometimes called fissures), and a gem cutter must work to minimise the effect of those fractures on the appearance of the finished stone.

These fissures make emeralds more brittle than other gems. Therefore are vulnerable to damage during cutting, polishing and setting or even from careless daily wear.
The famous rectangular “emerald cut,” with its beveled corners and step cut facets, maximises the shape and weight of the original emerald crystal. It also helps protect against damage because the vulnerable corners are faceted and provide a safe place for claws.

Carat Weight: Emeralds come in a wide range of sizes. There are emeralds in museums and private collections that weigh hundreds of carats. At the other extreme are tiny emeralds that weigh fractions of a carat.


What Molly gets up to when (she thinks), nobody is looking.

As you may well know our Molly is an essential part of the Arlington & Co. team. However, we do have to keep an eye on her in the office otherwise she tends to run riot.

All that networking is tiring stuff for a little pug.




Hi all,

I’m in the office today as SB decided I was resting too much and needed a bit of a shake-up. I really don’t know what’s got into him lately but he has been well, difficult.

I told him what’s the difference if I’m sleeping on my bed in the office or on your bed at home. He said that’s not the point, it’s a question of attitude and being available if required.

So here I am, in the office, having a post prandial snooze, as usual. If past form is anything to go by I’ll be here until 3.30 at the earliest. So he can put that in his pipe and smoke it.


Arlington Canine in Residence.