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Round|Natural|GIA

1.55ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 6485913336

Certificate GIA 6485913336

Diamond specifications and retailer prices

From HK$66,618 HKD
As of November 4, 2026
Save HK$55,324 HKD (45%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: HK$165,995 HKD at Diamond Quarter · As of November 5, 2026
View at Diamond Quarter

About this 1.55ct natural round diamond

This 1.55ct natural round sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6485913336. Listed at 19 retailers as of November 4, 2026, with a 83% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.55
Carat
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6485913336
Dimensions7.47 × 7.45 × 4.51 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Top View
7.47 mm7.45 mm1.55 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6485913336
Side View
Table 59.0%Crown 33.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 60.5%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: HK$75,623 HKD|Low: HK$60,967 HKD|High: HK$115,633 HKD|Avg: HK$86,936 HKD
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 7, 2026
Retailer 10HK$66,618 HKD
Retailer 2HK$73,162 HKD
Retailer 1HK$75,623 HKD
Retailer 7HK$78,727 HKD
Retailer 11HK$80,467 HKD
Retailer 3HK$80,482 HKD
Retailer 9HK$91,588 HKD
Retailer 5HK$92,826 HKD
Retailer 4HK$104,347 HKD
Retailer 8HK$106,738 HKD
Retailer 6HK$113,642 HKD

44 data points across 11 retailers

19 retailersHK$66,618 HKD to HK$121,942 HKD

B+
Cheapest Retailer
-
HK$66,618 HKD
B+
Retailer 2
-
HK$68,499 HKD
View
B
Retailer 3
-
HK$72,496 HKD
View
B
Retailer 4
-
HK$73,162 HKD
View
B
Retailer 5
-
HK$73,162 HKD
View
Final sale: no returns
B
Retailer 6
-
HK$75,623 HKD
View
B
Retailer 7
-
HK$78,727 HKD
View
B
Retailer 8
-
HK$79,260 HKD
View
Retailer 9
-
HK$80,467 HKD
View
Price last confirmed 15 days ago
B
Retailer 10
-
HK$80,482 HKD
View
B
Retailer 11
-
HK$91,455 HKD
View
B
Retailer 12
-
HK$91,588 HKD
View
B
Retailer 13
-
HK$92,826 HKD
View
Retailer 14
-
HK$96,290 HKD
View
Price last confirmed 15 days ago
B
Retailer 15
-
HK$104,347 HKD
View
B
Retailer 16
-
HK$106,738 HKD
View
B
Retailer 17
-
HK$113,642 HKD
View
B
Retailer 18
-
HK$121,942 HKD
View
Most Expensive
Diamond Quarter
1.55SI1H6436AC2BN · Nov 5
HK$165,995 HKD
£16,677 GBP
View
Price under review
18 more retailers have this diamond
Prices start from HK$66,618 HKDSave up to HK$55,324 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.

B+
1.55ct Round
HK$66,618 HKD