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Round|Natural|GIA

1.70ct M SI1 Round Natural Diamond

EX • M/SI1 • GIA 2558109024

Certificate GIA 2558109024

Diamond specifications and retailer prices

From HK$23,167 HKD
As of November 6, 2026
Save HK$13,911 HKD (38%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: HK$53,482 HKD at NZ Jewellers · As of October 17, 2026
View at NZ Jewellers

About this 1.7ct natural round diamond

This 1.7ct 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 2558109024. Listed at 12 retailers as of November 5, 2026, with a 60% 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

1.70
Carat
M
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 2558109024
Dimensions7.62 × 7.55 × 4.72 mm
L/W Ratio1.01
Top View
7.62 mm7.55 mm1.70 ctM / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2558109024
Side View
Table 57.0%Crown 36°Girdle: MED-STKPavilion 40.6°Culet: Very SmallDepth 62.3%

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 6
Current: HK$24,280 HKD|Low: HK$22,971 HKD|High: HK$37,345 HKD|Avg: HK$29,631 HKD|-1.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 4HK$23,167 HKD
Retailer 1HK$24,280 HKD
Retailer 7HK$28,183 HKD
Retailer 5HK$29,038 HKD
Retailer 6HK$31,530 HKD
Retailer 3HK$34,116 HKD
Retailer 2HK$37,079 HKD

46 data points across 7 retailers

12 retailersHK$23,167 HKD to HK$37,079 HKD

A
Cheapest Retailer
-
HK$23,167 HKD
A
Retailer 2
-
HK$24,280 HKD
View
B+
Retailer 3
-
HK$28,183 HKD
View
B+
Retailer 4
-
HK$29,038 HKD
View
Retailer 5
-
HK$30,699 HKD
View
Price last confirmed 17 days ago
Retailer 6
-
HK$30,699 HKD
View
Price last confirmed 21 days ago
Retailer 7
-
HK$30,699 HKD
View
Price last confirmed 22 days ago
B
Retailer 8
-
HK$31,530 HKD
View
B
Retailer 9
-
HK$34,116 HKD
View
Retailer 10
-
HK$35,417 HKD
View
Price last confirmed 19 days ago
B
Retailer 11
-
HK$37,079 HKD
View
Most Expensive
NZ Jewellers
e669a4be-7710-40b6-97ff-06ad5b512486 · Oct 17
HK$53,482 HKD
$6,824 USD
View
Price last confirmed 20 days ago
11 more retailers have this diamond
Prices start from HK$23,167 HKDSave up to HK$13,911 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
1.70ct Round
HK$23,167 HKD