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Round|Natural|GIA

1.64ct M SI1 Round Natural Diamond

VG • M/SI1 • GIA 2537433746

Certificate GIA 2537433746

Diamond specifications and retailer prices

From HK$28,086 HKD
As of November 6, 2026
Save HK$14,895 HKD (35%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: HK$42,981 HKD at Cape Diamonds · As of November 5, 2026
View at Cape Diamonds

About this 1.64ct natural round diamond

This 1.64ct 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 very-good cut grade and certified by GIA 2537433746. Listed at 7 retailers as of November 5, 2026, with prices from HK$28,086 to HK$42,981, a HK$14,895 spread on the same certified stone. Cape Diamonds lists it at HK$42,981. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.64
Carat
M
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 2537433746
Dimensions7.44 × 7.49 × 4.70 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Top View
7.44 mm7.49 mm1.64 ctM / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2537433746
Side View
Table 57.0%Crown 36°Girdle: Slightly ThickPavilion 40.6°Culet: NoneDepth 63.0%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
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$42,981 HKD|Low: HK$15,761 HKD|High: HK$43,300 HKD|Avg: HK$24,863 HKD|+49.6%
Cape Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 7HK$15,761 HKD
Retailer 8HK$19,119 HKD
Retailer 6HK$28,086 HKD
Retailer 5HK$30,400 HKD
Retailer 4HK$31,812 HKD
Retailer 2HK$38,355 HKD
Retailer 3HK$39,555 HKD
Cape DiamondsHK$42,981 HKD

37 data points across 8 retailers

7 retailersHK$28,086 HKD to HK$42,981 HKD

Retailer 1
-
HK$15,761 HKD
Price last confirmed 17 days ago
B
Retailer 2
-
HK$28,086 HKD
View
B
Retailer 3
-
HK$30,400 HKD
View
B
Retailer 4
-
HK$31,812 HKD
View
C
Retailer 5
-
HK$38,355 HKD
View
C
Retailer 6
-
HK$39,555 HKD
View
Most Expensive
C
Cape Diamonds
cert_2537433746 · Nov 5
HK$42,981 HKD
ZAR 88,508 ZAR
View
6 more retailers have this diamond
Prices start from HK$28,086 HKDSave up to HK$14,895 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
1.64ct Round
HK$28,086 HKD