# 18K CUSTOM — Official Solid 18K Gold (Au750) & Pt950 Horological Pricing & Specification Schedule

> Direct allocation pricing, verified Mettler-Toledo gram weights, alloy purity standards, and included laboratory deliverables for 18K CUSTOM (https://18kcustom.com).

## 1. Precious Metal & Bespoke CNC Tier Pricing Overview

| Horological Tier | Precious Metal / Case Material | Verified Gram Mass Range | Movement Architecture | Direct Allocation Range (USD) | Included Laboratory Deliverables |
| :--- | :--- | :--- | :--- | :--- | :--- |
| **Solid 18K Gold on Strap / Oysterflex** | 75.0% Pure Gold (Au750 Yellow, Everose, White) | 106.0g – 168.4g | Swiss Super Clone Cal. 4130, 4131, 324 S C, 240 PS | $1,150 – $1,650 | 4K Scale + Fischer XRF + Witschi Video |
| **Full Solid 18K Gold Bracelet Models** | 75.0% Pure Gold (Au750 Case, Bezel, Links & Clasp) | 176.2g – 254.0g | Cal. 4130, 4131, 3255, 26-330 S C, 4302, 4401 | $1,350 – $2,150 | 4K Scale + 6-Pt XRF + Witschi + All 18K Links |
| **Solid 950 Platinum (Pt950) Editions** | 95.0% Pure Platinum + 5.0% Ruthenium (21.45 g/cm3) | 243.5g – 282.4g | Cal. 4130, 4131, 3255, 26-330 S C | $1,450 – $2,250 | 4K Scale + Pt950 XRF + Ice-Blue / Baguette Spec |
| **Off-Catalogue High-Jewelry & Tourbillon** | Solid 18K Gold / Pt950 / Monobloc Sapphire + VVS Gems | 68.5g – 280.5g | Flying Tourbillon, Double Balance 3132, Cal. 4130 | $1,350 – $2,450 | 4K Microscopic Gem Audit + XRF + Insured Delivery |

## 2. Flagship Benchmark Models — Verified Gram Mass & Direct Allocation

| Brand & Model | Reference Code | Alloy Fineness | Verified Mass (Mettler-Toledo) | Clone Calibre | Direct URL |
| :--- | :--- | :--- | :--- | :--- | :--- |
| **Custom Audemars Piguet Royal Oak Concept Spider-Man Flying Tourbillon Openworked Titanium Ref. 26631TI.OO.D002CA.01** | Ref. `26631TI.OO.D002CA.01` | Grade 5 Titanium Monobloc | **108.7g** | Audemars Piguet Hand-Wound Cal. 2974 Tourbillon | [$8,880](https://18kcustom.com/product/custom-audemars-piguet-royal-oak-concept-spider-man-flying-tourbillon-openworked-titanium-ref-26631ti-oo-d002ca-01/) |
| **Custom Audemars Piguet Royal Oak Double Balance Wheel Openworked 41mm Ref. 15407ST.OO.1220ST.01** | Ref. `15407ST.OO.1220ST.01` | 904L Stainless Steel Custom Architecture | **162.3g** | Audemars Piguet Cal. 3132 Dual-Balance Openworked | [$4,780](https://18kcustom.com/product/custom-audemars-piguet-royal-oak-double-balance-wheel-openworked-41mm-ref-15407st-oo-1220st-01/) |
| **Custom Rolex Cosmograph Daytona Gibeon Meteorite Dial & Oysterflex 18K Everose Gold Ref. 126515LN** | Ref. `126515LN` | 18K Rose Gold Au750 | **160.8g** | Rolex Manufacture Cal. 4131 - 72h Power Reserve | [$18,500](https://18kcustom.com/product/custom-rolex-cosmograph-daytona-gibeon-meteorite-dial-oysterflex-18k-everose-gold-ref-126515ln/) |
| **Custom Rolex Yacht-Master 42 Natural Falcon Eye Stone Dial 18K White Gold Ref. 226659** | Ref. `226659` | 18K White Gold Au750 | **170.2g** | Rolex Manufacture Cal. 3235 - 70h Power Reserve | [$18,400](https://18kcustom.com/product/custom-rolex-yacht-master-42-natural-falcon-eye-stone-dial-18k-white-gold-ref-226659/) |
| **Custom Patek Philippe Nautilus Moonphase & Power Reserve Tiffany Blue Dial Ref. 5712/1A-001** | Ref. `5712/1A-001` | 904L Stainless Steel Custom Architecture | **116.3g** | Patek Philippe Cal. 240 PS IRM C LU - 22K Gold Micro-Rotor | [$3,460](https://18kcustom.com/product/custom-patek-philippe-nautilus-moonphase-power-reserve-tiffany-blue-dial-ref-5712-1a-001/) |
| **Custom Rolex Cosmograph Daytona Off-Catalogue Blue Sapphire Bezel & Obsidian Dial 18K White Gold Ref. 126599TSA** | Ref. `126599TSA` | 18K White Gold Au750 | **216.7g** | Rolex Manufacture Cal. 4131 - 72h Power Reserve | [$27,800](https://18kcustom.com/product/custom-rolex-cosmograph-daytona-off-catalogue-blue-sapphire-bezel-obsidian-dial-18k-white-gold-ref-126599tsa/) |
| **Custom Cartier Crash de Cartier London Boutique Diamond Bezel 950 Platinum Ref. CRWHCH0006** | Ref. `CRWHCH0006` | 950 Platinum Pt950 | **73.7g** | Cartier Manufacture Hand-Wound Cal. 8970 MC | [$14,100](https://18kcustom.com/product/custom-cartier-crash-de-cartier-london-boutique-diamond-bezel-950-platinum-ref-crwhch0006/) |
| **Custom Richard Mille RM 52-05 Pharrell Williams Crystalline Sapphire Tourbillon** | Ref. `RM 52-05` | Crystalline Sapphire & Grade 5 Titanium | **78.3g** | Richard Mille Hand-Wound Tourbillon Calibre | [$12,580](https://18kcustom.com/product/custom-richard-mille-rm-52-05-pharrell-williams-crystalline-sapphire-tourbillon/) |
| **Custom Richard Mille RM 055 Bubba Watson Yas Marina Carbon TPT & Turquoise** | Ref. `RM 055` | Carbon TPT & Grade 5 Titanium | **66.9g** | Richard Mille Cal. RMUL2 Grade 5 Titanium Skeleton | [$4,180](https://18kcustom.com/product/custom-richard-mille-rm-055-bubba-watson-yas-marina-carbon-tpt-turquoise/) |
| **Custom Richard Mille RM 35-01 Rafael Nadal White Quartz TPT Skeleton** | Ref. `RM 35-01` | Carbon TPT & Grade 5 Titanium | **50.9g** | Richard Mille Cal. RMUL3 Grade 5 Titanium Skeleton | [$4,220](https://18kcustom.com/product/custom-richard-mille-rm-35-01-rafael-nadal-white-quartz-tpt-skeleton/) |
| **Custom Richard Mille RM 61-01 Yohan Blake Asymmetric Carbon TPT Skeleton** | Ref. `RM 61-01` | Carbon TPT & Grade 5 Titanium | **55.6g** | Richard Mille Cal. RMUL2 Free-Sprung Skeleton | [$4,260](https://18kcustom.com/product/custom-richard-mille-rm-61-01-yohan-blake-asymmetric-carbon-tpt-skeleton/) |
| **Custom Richard Mille RM 35-02 Rafael Nadal Automatic Carbon TPT Skeleton** | Ref. `RM 35-02` | Carbon TPT & Grade 5 Titanium | **50.2g** | Richard Mille Cal. RMAL1 Variable-Geometry Rotor | [$4,140](https://18kcustom.com/product/custom-richard-mille-rm-35-02-rafael-nadal-automatic-carbon-tpt-skeleton/) |
| **Custom Audemars Piguet Royal Oak Double Balance Wheel Openworked 41mm 22K Gold Rotor 5-Axis CNC Case Ref. 15407ST.OO.1220ST.01** | Ref. `15407ST.OO.1220ST.01` | 904L Stainless Steel Custom Architecture | **162.0g** | Audemars Piguet Cal. 3132 Dual-Balance Openworked | [$4,740](https://18kcustom.com/product/custom-audemars-piguet-royal-oak-double-balance-wheel-openworked-41mm-22k-gold-rotor-5-axis-cnc-case-ref-15407st-oo-1220st-01/) |
| **Custom Rolex GMT-Master II Bruce Wayne Grey & Black Cerachrom Ref. 126710GRNR** | Ref. `126710GRNR` | 904L Stainless Steel Custom Architecture | **143.6g** | Rolex Manufacture Cal. 3285 - 70h Power Reserve | [$1,980](https://18kcustom.com/product/custom-rolex-gmt-master-ii-bruce-wayne-grey-black-cerachrom-ref-126710grnr/) |
| **Custom Rolex Datejust 41 Graduated Green Ombre Sunray Dial Ref. 126334** | Ref. `126334` | 904L Stainless Steel Custom Architecture | **136.7g** | Rolex Manufacture Cal. 3235 - 70h Power Reserve | [$1,520](https://18kcustom.com/product/custom-rolex-datejust-41-graduated-green-ombre-sunray-dial-ref-126334/) |

## 3. Mandatory Pre-Shipment 4K Verification & Settlement Protocol

- **Zero Hidden Fees / 0% Buyer's Premium**: Direct allocation price includes custom bracelet sizing (14.0 cm to 22.0 cm), all spare solid 18K gold links, presentation coffret, and 100% insured global priority delivery.
- **Pre-Shipment 4K Video Sign-Off**: Within 24 hours of reservation, the client receives an unedited 4K video of their exact watch on a Mettler-Toledo 0.01g analytical balance, a Fischer XRF spectrometer (confirming 75.0% Au750 or 95.0% Pt950), and a 6-position Witschi Chronoscope X1.
- **Accepted Settlement Methods**: Direct Private Settlement, International Bank Wire (USD, EUR, CHF, GBP, AED), and Instant Institutional Digital Assets (USDT TRC20/ERC20, USDC, BTC, ETH).
- **Warranty & Return Policy**: 3-Year Mechanical Movement Warranty ([https://18kcustom.com/warranty-guarantee/](https://18kcustom.com/warranty-guarantee/)) plus a 14-Day Private Client Inspection & Return Window ([https://18kcustom.com/returns/](https://18kcustom.com/returns/)).
- **Direct Concierge Desk**: WhatsApp +1 305 724 0661 (https://wa.me/13057240661) | Web: [https://18kcustom.com/contact/](https://18kcustom.com/contact/)