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1.55ct M SI1 Round Natural Diamond

EX • M/SI1 • GIA 6551332767

Certificate GIA 6551332767

Diamond specifications and retailer prices

From HK$12,450 HKD
As of November 4, 2026
Save HK$22,233 HKD (64%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: HK$34,684 HKD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.55ct natural round diamond

This 1.55ct natural round sits in the one-and-a-half to two carat band, graded M colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6551332767. Listed at 8 retailers as of November 4, 2026, with prices from HK$12,450 to HK$34,684, a HK$22,233 spread on the same certified stone. NZ Jewellers lists it at HK$34,684. 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
M
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 6551332767
Dimensions7.36 × 7.42 × 4.62 mm
L/W Ratio1.01
Key to symbols
Crystal, Needle, Indented Natural
Top View
7.36 mm7.42 mm1.55 ctM / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 6551332767
Side View
Table 59.0%CrownGirdlePavilionCuletDepth 62.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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$34,684 HKD|Low: HK$12,348 HKD|High: HK$36,433 HKD|Avg: HK$19,599 HKD|-4.8%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 4HK$12,450 HKD
Retailer 6HK$15,133 HKD
Retailer 7HK$16,593 HKD
Retailer 5HK$17,354 HKD
Retailer 9HK$17,424 HKD
Retailer 2HK$18,067 HKD
Retailer 8HK$19,142 HKD
Retailer 3HK$22,508 HKD
NZ JewellersHK$34,684 HKD

42 data points across 9 retailers

8 retailersHK$12,450 HKD to HK$34,684 HKD

A
Cheapest Retailer
-
HK$12,450 HKD
B+
Retailer 2
-
HK$15,133 HKD
View
B+
Retailer 3
-
HK$16,593 HKD
View
B+
Retailer 4
-
HK$17,354 HKD
View
B+
Retailer 5
-
HK$18,067 HKD
View
B+
Retailer 6
-
HK$19,142 HKD
View
B+
Retailer 7
-
HK$22,508 HKD
View
Most Expensive
B
NZ Jewellers
76b289ab-a5c6-4a5f-a7d7-07e20680fbd6 · Nov 5
HK$34,684 HKD
$4,421 USD
View
7 more retailers have this diamond
Prices start from HK$12,450 HKDSave up to HK$22,233 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
1.55ct Round
HK$12,450 HKD