Left to Right: China Glaze Cracked Medallion, China Glaze Harvest Moon, MAC Originality, China Glaze Foxy, OPI DS Glow, OPI Pros and Bronze.
Obviously, Cracked Medallion can't really be too similar to Harvest Moon because it is a crackle polish, but in the bottle they are similar, so I added it in. China Glaze Foxy is also far more red on the nail, but in the bottle a lot of the bronzy shimmer was visible, so that came along as well. Here they are on the nail:
Left to Right (index finger through pinky): MAC Originality, China Glaze Harvest Moon, OPI DS Glow, OPI Pros and Bronze. The thumb is China Glaze Foxy.
I thought MAC Originality would be closer to Harvest Moon, by the latter is darker and warmer, with a slightly orange caste to it. The other shades are all leaning towards a lighter bronze. OPI Glow has a mixture of larger particles in different shades of gold and bronze. It's probably the sparkliest of these. OPI Pros and Bronze is unique in this bunch for being quite pink, along with the light gold/bronze particles it contains. It is also the sheerest polish in this bunch.
And here is my Cracked Medallion fail; I applied it over still-wet polish which caused it to not really crackle much at all. It's a sparkly medium bronze, anyways.
Out of these shades, I'm a big fan of both MAC Originality (one of MAC's home-runs when it comes to lacquers- they are notorious for being hit and miss in the polish department), and OPI DS Glow. Glow is lovely, but also takes several coats to build up to it's best potential. China Glaze Harvest Moon is significantly different from both of those polishes, and certainly unique enough to warrant picking up. It also has an outstanding formula; it's easy to apply and opaque in two coats. It's also gorgeous: pigmented and eye-catching, an incredibly sparkly deep copper metallic. Beautiful!
Copper Domo approves of this copper comparison. Do you?