Here are the essential features of this top‑tier modified Day‑Date:
1. Model & Nickname
- Model: Rolex 28238
- Popular nickname: “Black Sugar” (black ice crystal dial)
- Known as a “running watch” because it is custom‑made with 18K gold throughout
2. Material & Weight
- Entire watch (case, bracelet, clasp) custom‑made from AU750 18K gold
- Total weight: 207 grams – exactly matches the genuine
- This gives the watch substantial heft and a solid precious‑metal feel
3. Case Development Process
- Not made by ordinary methods – the merchant bought a genuine watch and scanned it under a machine
- Data was then modeled in 3D, followed by 3D printing / 3D modeling to create the case
- Details such as polished surfaces, brushed surfaces, and precious metal engravings were compared directly to the genuine
4. Key Craftsmanship Details to Check
| Component | What to Look For |
|---|---|
| Fluted bezel (dog‑tooth bezel) | Triangular front and back; bezel slightly higher than the case (correct); some factories make the bezel too long (incorrect) |
| Dial & hands | Developed with original data; top‑tier aftermarket parts; natural diamonds for the indices (fire color matches genuine) |
| Date wheel | Smooth jump function |
| Movement | Shanghai 2834 movement – achieves the same smooth date‑jump as genuine |
| Crown | Two dots under the crown – correct for Day‑Date model |
| Caseback | Brushed finish – perfectly handled |
| Precious metal hallmarks (four corners) | Crown engraving, dog head, AU750, scale – all must be very accurate and clear |
| Strap fit | Strap must fit tightly to the watch head; strap must be straight (not twisted or misaligned) |
| Clasp (buckle) | 3D relief of the crown – excellent craftsmanship |
| Inner clasp engravings | Rolex logo, phoenix & dragon logo, AU750, dog head, crown – all very clear and well‑executed |
5. Overall Quality Statement
- The merchant claims this is the best custom‑made 18K gold black sugar Day‑Date currently available
- Case, bracelet, and all details are based on original data from a genuine watch
This fifth modified watch – the Day‑Date 28238 “Black Sugar” – shifts focus from the sports chronograph (Daytona) to the dressier, flashier Day‑Date line. The key takeaway here is the manufacturing method: instead of claiming “original data” vaguely, the merchant explicitly says they bought a genuine watch, scanned it, and used 3D modeling to replicate the case. This level of reverse engineering is rare in the replica industry and explains the precision of the bezel height, case curvature, and hallmarks.
For collectors who want the look and weight of a full 18K gold black ice Day‑Date without the astronomical price of a genuine 28238 (which is also becoming rare), this modified watch represents the current best in class for precious‑metal replicas. The fact that the case was 3D‑scanned from a genuine watch explains the high accuracy of the fluted bezel, case shape, and strap fit. The intrinsic gold value (over 200g of 18K) provides a floor of material worth, making this less of a “fake” and more of a “custom gold watch with Rolex design.”
Hello everyone, this is Bozwatch.
Every watch is a work of art, a testament to time. And I am a fanatic believer in them. I also hope that all watch enthusiasts can avoid pitfalls and find their own “Bole” (a discerning patron).
Recently, some fans messaged me privately wanting to buy the best modified and upgraded black ice crystal DD on the market – and it must be made of precious metals. They asked me to make a video with them. So let’s take a look – what does the best craftsmanship look like on the best modified black ice crystal currently available?
I bought this watch from a merchant – a black ice sugar (black diamond dial) – to shoot a review video for everyone.
As you know, the “black sugar” is a very popular style in the Rolex lineup. Its model number is 28238. This watch is often called a “running watch” – why? Because it is custom‑made with 18K gold. The entire watch is made of 18K solid gold.
If we want to modify it to the best possible state, we must use the same 18K gold as the original to customize it. So this watch is custom‑made with 18K gold. Let’s weigh it and see how much it weighs.
You can see the scale reading – the whole watch weighs 207 grams. This weight is exactly the same as the genuine article. It uses AU750 18K gold for the customization.
According to the merchant, this watch’s case was not made by ordinary means. They used original data to mold the case. How did they obtain the original data? They bought a genuine watch, placed it under a machine, scanned it, and then modeled it. The details of the case – the polished surfaces, the brushed surfaces, and the precious metal engravings – were all compared against the original. This data was then fed into a computer, and through 3D printing and three‑dimensional modeling, they produced the case. So for this watch, the case craftsmanship is truly very good.
Let me share my experience – the feeling of wearing it is really excellent. It feels very heavy.
This brings up an important point: when you choose an 18K gold watch, you must pay attention to the craftsmanship of certain details. For example, what details? Take the fluted bezel. You can see the fluted bezel – its front and back are triangular areas. See? It’s very well executed. Some 18K gold cases make the bezel too long – those are all incorrect.
Look at this fluted bezel paired with the case – from the side, you can see it is slightly raised. See? The bezel is slightly higher than the case, just a little bit. This is also consistent with genuine craftsmanship. So, the bezel is actually very well made.
The internal accessories are developed with original data – top‑tier aftermarket parts: the dial, hands, and date wheel. The diamonds on the dial and the diamond hour markers are all set with natural diamonds. Therefore, you can see that the fire color of this dial is consistent with the genuine. This is very well done.
The movement inside is equipped with a 2834 movement (likely a 2834‑2 or similar). It can achieve the same smooth jumping date function as the genuine. This is quite good.
In fact, the technology for this type of Rolex gold watch is very mature now. During our selection process, we must compare the details.
Now look at the side – the crown. You can see the crown has two dots underneath it. This is correct for a Day‑Date watch. Then look at the caseback – the brushing on the caseback and the overall case finishing are all perfectly handled.
Then look at the precious metal engravings on the four corners. Look at the crown engraving here, the dog head engraving. Let me zoom in for you. See the crown engraving and the dog head? Look at the 750 engraving here, and the scale. The precious metal engravings on the four corners are a presentation of these details. On a good 18K gold case, these engravings will be very accurate.
One more thing – look at the strap. The most important point is whether the strap and the watch head fit tightly, and whether the strap is straight. The craftsmanship of this watch has achieved a very tight fit between the strap and the watch head. The strap is very straight – perfectly aligned.
Now let’s take a look at the clasp. On the clasp, there is a three‑dimensional relief of a crown. This craftsmanship is very good.
Finally, look at the inside – the engravings on the inside. You can see the engravings – for example, the Rolex engravings, the crown logo. Let me zoom in for you. It’s really very good.
This is the best custom‑made piece I have found from the merchant – an 18K gold black rock sugar (black diamond dial) Day‑Date. You can see the craftsmanship of these engravings – truly very good. See? Here are the AU750, dog head, and crown logo. These details are what a good precious metal product needs to have.
This is a 28238 – custom‑made with 18K gold. It is currently the best modified and upgraded version. A simple watch sharing.
Do you think this watch is worth buying?
That’s all for today’s video from Bozwatch. If you like Bozwatch’s videos, please double‑tap to like and follow. See you next time.