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Core-Lock & Modular System
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Illustrative image. The selected finish, dimensions and supplied components are confirmed separately.

Additional angles and the exact selected configuration will be shown when verified.

H01 · Earring base

Rounded Rectangle Hoops

Pair

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Clean lines, a rounded rectangular silhouette and TC4 titanium metalwork. Sold as a pair. The detail image shows one hoop.

Finish

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Handmade
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H03 & Core-Lock Connector

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H03 & Core-Lock Connector

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Finish

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Rectangle Hoop & Core-Lock Drop

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Rectangle Hoop & Core-Lock Drop

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Finish

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Oval Cabochon Charm

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Oval Cabochon Charm

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Surface
Gemstone
Frame finish

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What is included

    Not included: pieces not listed above. Confirm every additional part required for the illustrated look before ordering.

    Materials by component

    Skin-contact components use titanium alloy. The full component list, surface finish and other materials are confirmed for the exact version. TC4 applies only to components specified as TC4.

    Size, weight & wearing

    Complete-piece dimensions and measured weight have not been confirmed for this preview. Ask for the measurements of your selected version.

    How the parts connect

    This component does not by itself establish a Core-Lock connection. Check the full arrangement and any adapter needed.

    Core-Lock & Modular System

    Already own a piece?

    Tell us which base or charm you have. We can confirm the missing parts instead of assuming you need another complete piece.

    Made by hand

    All our jewelry is handmade. Texture and surface details vary and cannot be guaranteed to match a photo exactly. Materials, dimensions, function and important details confirmed before making still follow the description.

    Materials & personal preferences

    No material can be guaranteed to suit everyone. Titanium alloy may cause a reaction or discomfort for some people. Check all components and processes and email us about your material preferences.

    Materials & care

    Delivery, returns & repair

    Destination-specific delivery costs and timing are confirmed before payment. See the return and clasp-repair information.

    Shipping & returnsWarranty & repair

    Find your fit

    Ring size guide

    Current options: 54 mm and 57 mm inner circumference, approximately 17.2 mm and 18.1 mm inner diameter. Measure the intended finger or a ring that fits it.

    01

    Measure a ring

    Measure the inside diameter of a ring that fits your chosen finger. Leave the metal edge out of the measurement.

    02

    Measure your finger

    1. Use a ring sizer on the finger you will wear the piece on.
    2. Check that it passes the knuckle and stays comfortably in place.
    3. Repeat at different times of day before choosing your size.
    Ask us about fit

    International reference

    Approximate regional equivalents. SUIJI sizes 54 and 57 are highlighted. Scroll horizontally to compare the full table.

    Inner circumference in mm; regional systems are approximate
    EU / FR (mm)Ø (mm)US / CAUK / AUJPCN / HKITIN
    4113.05—————≈ 1
    4213.37—————≈ 2
    4313.69—————≈ 3
    4414.01≈ 3≈ F½≈ 4≈ 4≈ 4≈ 4
    4514.32≈ 3¼≈ G≈ 5≈ 5≈ 5≈ 5
    4614.64≈ 3¾≈ H≈ 6≈ 6≈ 6≈ 6
    4714.96≈ 4≈ H½≈ 7≈ 7≈ 7≈ 7
    4815.28≈ 4½≈ I½≈ 8≈ 8≈ 8≈ 8
    4915.6≈ 4¾≈ J½≈ 9≈ 9≈ 9≈ 9
    5015.92≈ 5¼≈ K≈ 10≈ 10≈ 10≈ 10
    5116.23≈ 5¾≈ L≈ 11≈ 11≈ 11≈ 11
    5216.55≈ 6≈ L½≈ 12≈ 12≈ 12≈ 12
    5316.87≈ 6¼≈ M½≈ 13≈ 13≈ 13≈ 13
    5417.19≈ 6¾≈ N½≈ 14≈ 14≈ 14≈ 14
    5517.51≈ 7¼≈ O≈ 15≈ 15≈ 15≈ 15
    5617.83≈ 7½≈ P≈ 16≈ 16≈ 16≈ 16
    5718.14≈ 8≈ P½≈ 17≈ 17≈ 17≈ 17
    5818.46≈ 8¼≈ Q½≈ 18≈ 18≈ 18≈ 18
    5918.78≈ 8¾≈ R≈ 19≈ 19≈ 19≈ 19
    6019.1≈ 9≈ S≈ 20≈ 20≈ 20≈ 20
    6119.42≈ 9½≈ S½≈ 21≈ 21≈ 21≈ 21
    6219.74≈ 10≈ T½≈ 22≈ 22≈ 22≈ 22
    6320.05≈ 10¼≈ U½≈ 23≈ 23≈ 23≈ 23
    6420.37≈ 10¾≈ V≈ 24≈ 24≈ 24≈ 24
    6520.69≈ 11≈ W≈ 25≈ 25≈ 25≈ 25

    Different brands and regional charts can vary. Confirm the measurements of the exact piece.

    Boucheron · EU / US / UK / JP / CN / HK · Pomellato / IT