CaratHunter
Plans
Round|Natural|HRD

3.70ct I SI1 Round Natural Diamond

EX • I/SI1 • HRD 210000125504

Shape and cutting style on the report: Brilliant

Certificate HRD 210000125504

Diamond specifications and retailer prices

From HK$520,608 HKD
€63,196 EUR
As of November 2, 2026
3 retailers carry this diamond
Most expensive: HK$520,608 HKD at Belgium Diamonds
View at Belgium Diamonds

About this 3.7ct natural round diamond

This 3.7ct natural round sits in the three to five carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by HRD 210000125504. Listed at 3 retailers as of November 2, 2026. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

3.70
Carat
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.2°
Pavilion angle40.6°
OriginNatural
Grading LabHRD
CertificateHRD 210000125504
Dimensions9.77 × 9.83 × 6.13 mm
L/W Ratio1.01
Culet sizeNone
Top View
9.77 mm9.83 mm3.70 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateHRD 210000125504
Side View
Table 57.0%Crown 36.2°Girdle: MediumPavilion 40.6°Culet: 0.0Depth 62.6%

Caratlytics Score

How it works →
C
Average
Compare with similar diamonds
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: HK$325,170 HKD|Low: HK$259,041 HKD|High: HK$325,170 HKD|Avg: HK$295,632 HKD|+2.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 5, 2026
Retailer 5HK$259,041 HKD
Retailer 6HK$274,662 HKD
Retailer 3HK$284,524 HKD
Retailer 4HK$316,770 HKD
Retailer 2HK$320,097 HKD
Retailer 1HK$325,170 HKD

11 data points across 6 retailers

3 retailers

Retailer 1
-
HK$268,496 HKD
$34,222 USD
Price last confirmed 65 days ago
Retailer 2
-
HK$320,097 HKD
$40,799 USD
View
Price last confirmed 57 days ago
Most Expensive
C
Belgium Diamonds
427920255 · Nov 2
HK$520,608 HKD
€63,196 EUR
View
2 more retailers have this diamond

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

C
3.70ct Round
HK$520,608 HKD