Additional niches properties of products allow studying user preferences and calculating recommendations more accurately. This section describes allowing filling the product feed with jewelry niche features.

Jewelry

The "jewelry" element must be inside the "offer" element.

<offer ...>
    ...
    <jewelry>
        ...
    </jewelry>
</offer>

Gender

The "gender" element must be inside the "jewelry" element and can have one of the following values:

Value	Description
m	For men's products
f	For women's products

If the product is equally suitable for either gender, there is no need to add this element.

<offer ...>
	...
	<jewelry>
		<gender>f</gender>
	</jewelry>
</offer>

Ring Size

The "ring_size" elements must be inside the "ring_sizes" element of the "jewelry" element.

Don't use this element for products that are not rings.

<offer ...>
    ...
	<jewelry>
	    <ring_sizes>
			<ring_size>16</ring_size>
			<ring_size>16.5</ring_size>
			<ring_size>17</ring_size>
		</ring_sizes>
	</jewelry>
</offer>

Bracelet Size

The "bracelet_size" elements must be inside the "bracelet_sizes" element of the "jewelry" element.

Don't use this element for products that are not bracelets.

<offer ...>
    ...
	<jewelry>
	    <bracelet_sizes>
			<bracelet_size>16</bracelet_size>
			<bracelet_size>16.5</bracelet_size>
			<bracelet_size>17</bracelet_size>
		</bracelet_sizes>
	</jewelry>
</offer>

Necklace Size

The "chain_size" elements must be inside the "chain_sizes" element of the "jewelry" element.

Don't use this element for products that are not necklaces.

<offer ...>
    ...
	<jewelry>
	    <chain_sizes>
			<chain_size>16</chain_size>
			<chain_size>16.5</chain_size>
			<chain_size>17</chain_size>
		</chain_sizes>
	</jewelry>
</offer>

Color

The "jewelry_color" element must be inside the "jewelry" element and can have one of the following values:

Value	Description
white	White (silver or metallic gray) color
red	Red color
yellow	Yellow color
black	Black color

NOTE

Don't use this element for products in other colors or multicolors.

<offer ...>
    ...
	<jewelry>
		<jewelry_color>red</jewelry_color>
	</jewelry>
</offer>

Metal

The "jewelry_metal" element must be inside the "jewelry" element and can have one of the following values:

Value	Description
gold	Gold Jewelry
silver	Silver Jewelry
platinum	Platinum Jewelry

Don't use this element for products with a different type of metal or products with more than one type of metal.

<offer ...>
    ...
	<jewelry>
		<jewelry_metal>silver</jewelry_metal>
	</jewelry>
</offer>

Gemstone

The "jewelry_gem" element must be inside the "jewelry" element and can have one of the following values:

Value	Description
agate	Agate
alexandrite	Alexandrite
swarkovski	Rhinestone (Swarovski, Preciosa)
amethyst	Amethyst
turquoise	Turquoise
diamond	Diamond
garnet	Garnet
garnet_synthetic	Synthetic garnet
pearl	Pearl
emerald	Emerald
emerald_geothermal	Synthetic emerald
quartz	Quartz
quartz_smoky	Morion (smoky quartz)
coral	Coral
corundum	Corundum
corundum_synthetic	Synthetic corundum
malachite	Malachite (mountain green)
nanocrystal	Nanocrystal
onyx	Onyx
nacre	Nacre
rhodolite	Rhodolite
ruby	Ruby
ruby_synthetic	Synthetic ruby
sapphire	Sapphire
sapphire_geothermal	Synthetic sapphire
sitall	Sitall
glass	Glass
topaz	Topaz
tourmaline	Tourmaline
fianit	Fianite (a.k.a Fianit)
chalcedony	Chalcedony
chrysolite	Olivine (chrysolite, peridot)
chrysoprase	Сhrysoprase
citrine	Сitrine (yellow quartz)
spinel	Spinel
spinel_synthetic	Synthetic spinel
amber	Amber
mix	Mix of stones

Don't use this element for products with another type of gemstone or products with more than one type of gemstone.

<offer ...>
    ...
	<jewelry>
		<jewelry_gem>rubin</jewelry_gem>
	</jewelry>
</offer>

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