Copy of size guide

- For your reference when choosing size -

At Astrea JEWELRY and ART, we deliver delicate jewelry made from natural materials and by hand, one by one.
We provide size guidelines, measurement methods, and handling points for each category so that customers can make selections with confidence.

◼︎ MINERALS (Rough stones/loose stones)

・The maximum dimensions in each direction are listed in the order of "length x width x height" (unit: mm).
- Due to the characteristics of natural materials, slight errors may occur due to chamfering or crystal distortion.
・Please refer to the palm comparison in the product images to get an idea of the actual size.

[Measurement example]

item	explanation
vertical	Maximum length of crystal
beside	Width perpendicular to the vertical direction
height	Thickness and three-dimensional height

◼︎ Natural stone bracelet

-For our brand's natural stone bracelets, we generally recommend that you add about 1 to 1.5 cm of extra room to your wrist size.
-This is not a rubber bracelet, but is made with wire and metal fittings, so please refer to the actual inner circumference size when selecting a size.

[Size guide]

Inner Circumference Size	Wrist size guide
15cm	Wrist circumference 13-14cm
16cm (standard)	Wrist circumference 14-15cm
17cm	Wrist circumference 15-16cm
18cm	Relaxed fit, suitable for people from overseas

-The easiest way to measure the inner circumference is to open up your clasp-type bracelet and measure the circumference with a tape measure.
*The rubber and stretch types may not be an accurate guide.

◼︎ Earrings and ear cuffs

・"Size Detail" is listed on the product page. Please check the opening, outer diameter, motif size, etc.

[Main part names]

item	explanation
post	The rod that goes through the ear (e.g. 0.7mm diameter)
motif	Height and width of the decorative part on the top
Opening	Open areas for ear cuffs, etc.
catch	Back fastening parts (silicon, metal, etc.)

-There may be slight individual differences in comfort depending on the thickness of the ears and the position where the earphones are worn.

◼︎ Ring

・Our brand's ring sizes are indicated in Japanese standard numbers (#◯ notation) that conform to JIS (Japanese Industrial Standards).
-For rings with adjusters, the range of fine adjustment is listed individually on the product page.

[Japanese size reference chart]

Issue number	Inner diameter (mm)	Inner circumference (mm)
No. 3	14.0	44.0
No. 7	15.0	47.1
No. 13	17.0	53.4
No. 16	18.0	56.5

- Designs that increase the width of the ring (twisted, stranded, wide ring, etc.) will slightly affect the fit.
- You can also measure the inside circumference of your ring using paper tape or string and calculate it.

◼︎ Necklace

-The basic size is approximately 45 cm in total length (there may be an error of a few centimeters depending on the design).
・Models that come with an adjuster are indicated as "+5cm" etc.