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4.55ct D SI2 Round Natural Diamond

ID • D/SI2 • GIA 18

Certificate GIA 18

Diamond specifications and retailer prices

From HK$518,719 HKD
$66,115 USD
As of October 31, 2026
Save HK$64,836 HKD (11%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: HK$583,555 HKD at Blue Nile · As of October 31, 2026
View at Blue Nile

About this 4.55ct natural round diamond

This 4.55ct natural round sits in the three to five carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA. Listed at 2 retailers as of October 31, 2026, with a relatively tight 12% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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

4.55
Carat
D
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 18
Dimensions10.56 × 10.61 × 6.63 mm
L/W Ratio1.00
Top View
10.56 mm10.61 mm4.55 ctD / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 18
Side View
Table 55.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 62.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 31
Current: HK$583,555 HKD|Low: HK$518,719 HKD|High: HK$604,550 HKD|Avg: HK$563,358 HKD|-3.5%
Blue Nile
Retailer 2
October 28, 2026
Retailer 2HK$518,719 HKD
Blue NileHK$583,555 HKD

7 data points across 2 retailers

2 retailersHK$518,719 HKD to HK$583,555 HKD

A
Cheapest Retailer
-
HK$518,719 HKD
$66,115 USD
Most Expensive
A
Blue Nile
28988250 · Oct 31
HK$583,555 HKD
$74,379 USD
View
1 more retailer has this diamond
Prices start from HK$518,719 HKDSave up to HK$64,836 HKD

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.

A
4.55ct Round
HK$518,719 HKD