THE HISTORY OF SAPPHIRE GEMS IS CLEAR.I don't agree that they are not a breed of chicken or at least I believe it is debatable. You are calling the SG a hybrid, this mean you know exactly what two BREEDS they crossed to get this bird right? Why is it called a Czech breed then? It is completely unclear from all sources what has gone into the Sapphire GemTM. It cannot be called a hybrid if you don't know what was used to create it. Its not a breed if its not able to be reproduced reliably by others. All of this is just semantics. One thing is for sure the history behind these birds is pretty much uncertain.
The results of crossing a mongrel to a pure breed in dogs can become a established breed if you get it standardized and able to be reproduced by others. This is how all standardized breeds of chickens where created. If your curious I can explain my plans but you just can't say you get nothing, when that just isn't true. This is a raw, from the beginning creation. You can't take a F1 breeding and call it a breed, that much I agree with you on. But you can't completely discount these birds as another over bred, genetically short sex link when I can see they just are not.
This cross (bv & sg) does reliably create solid black and blue laced birds. I've got about 70 on the ground right now I can prove it with and I've got another 30 (plus my winners eggs) in the incubator. This year I have hatched 100 chicks that I sold to a local vendor to resell and I kept an additional 70. With 100 percent certainty I can with confidence tell you this is what mine produce.
I purchased the SGs from Hoover's hatchery, these are not the ones with red necks though. It is possible Hoover has since mixed them with another type of chicken. The pics on their website this year is not the same as it was last fall when I got these. Companies don't need to explain how they come up with a type of chicken they want to sell but I believe they took last years blues (they ones i have) and bred them to something else as I do not a have anything nor have a seen anything with red in it. This year I have hatched around 200 chicks so I have plumed the depths of what a cross of Barnie and SG will produce. I was so impressed by their temperament and colors, I thought people would like them and they do. I have offered them for sale on Ebay. This crossing does not produce god knows what, as you get with breeding a red or black sex link. The evidence I have found so far points to them being a breed, just for the fact that I can reliably get the same chicks every time I breed the same 10 hens to the same rooster.
I do know that blue is one of the hardest colors to breed true and it takes some messing around to get it to reliably reproduce. Lets not get stuck on semantics but look past the labels and see what we really have. The beginnings of something new. It will take me years to get this where i want it but the first goal is to get them to reliably reproduce expected traits in egg laying ability, egg size, temperament, and bird body size. My final product will be birds that have the same traits expressed in all chicks regardless of color. I found that blue is nice but iridescent black is oh so pretty too. Some of the best known and desired breeds where once lowly mongrels/sex links who were developed into something pretty and wonderful.
ACTUALLY, THEY ARE A HYBRID OF DOMINANT CZ COMPANY.
THEIR CHARACTERISTIC THAT DISTINGUISHES THEM FROM OTHER HYBRIDS IS THE UNIQUE PINKISH COLOR OF THEIR EGGS.
LOOK AT THEIR LINK HERE:
https://dominant-cz.cz/produkt/dominant-blue-d-107/?lang=en
splash rock X barred rock = color sexable plymouth rocks
I USE COMMERCIAL HYBRIDS FOR MORE THAN 20 YEARS. I KNOW EXACTLY WHY I TRUST COMINANT CZ AND THEIR PRODUCTS.