This is one of a series of postings discussing different diamond companies manufacturing a “signature” or “branded” ideal cut diamond.
The Eightstar diamond is a beautiful (albeit extremely expensive) ideal cut loose diamond which is sold and marketed through various bricks and mortar jewelry stores accross the country.
The Eightstar Diamond Company

The Eightstar diamond company promotes and sells their beautiful (albeit extremely expensive) ideal cut diamonds by showcasing an Eightstar diamond’s diamond light performance via a metric called the Firescope.

Diamond Cut / Beauty Evaluator – Firescope
The Firescope
The Firescope is a light-mapping instrument invented by a Tokyo diamond dealer in 1984. It uses simple colorcoding to show whether – or how – a diamond is leaking light.
The Firescope looks unassuming: a small metal box with an eyepiece. But the mechanism is extraordinary. A diamond is slid between a light source, below, and the eyepiece, above. There are red reflectors in the eyepiece. Any light reflecting through the crown and table is reflected back – but in red.
Red light means light reflection, but white light – which can’t have reached the reflector – means light leakage. The amount of red and white light indicate a diamond’s potential brilliance and the quality of its cut. A diamond with no light leakage will present an image without any white.
The Firescope was first introduced as an observation tool to help jewelers buy the most beautiful diamonds. What the instrument showed repeatedly, however, was that almost all diamonds leaked light, often badly. Even the Ideals.
Are Eightsar Diamonds Worth The Premium?
While Eightstar branded diamonds are assuredly beautiful ideal cut diamonds, the question of whether they are worth the significant premium over similar quality ideal cut diamonds and even competing ‘branded’ ‘signature’ ideal cut diamonds at far lower prices, is one only the consumer can answer.
Certainly there is as much psychology and emotion in the diamond buying process, as there are rational and practical considerations.
I would imagine many people let their emotions take over and will pay a premium for the Eightstar diamond. To these people, the Eightsar Diamond is not “expensive” at all.
Others, will go with the rational and practical approach and will purchase an unbranded ideal cut loose diamond, or even a different ideal cut diamond brand of similar quality and beauty for much less money. These people will be happy in the knowledge that they did not have to pay an exorbitant premium in order to get the finest cut ideal diamond that money can buy.
The bottom line is that there is no “right answer”, only the one that works for you, personally.