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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 $6,368 NZD
As of November 6, 2026
Save $3,378 NZD (35%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $9,746 NZD 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 $6,368 to $9,746, a $3,378 spread on the same certified stone. Cape Diamonds lists it at $9,746. 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

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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: $9,746 NZD|Low: $3,574 NZD|High: $9,818 NZD|Avg: $5,638 NZD|+49.6%
Cape Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 7$3,574 NZD
Retailer 8$4,335 NZD
Retailer 6$6,368 NZD
Retailer 5$6,893 NZD
Retailer 4$7,213 NZD
Retailer 2$8,697 NZD
Retailer 3$8,969 NZD
Cape Diamonds$9,746 NZD

37 data points across 8 retailers

7 retailers$6,368 NZD to $9,746 NZD

Retailer 1
-
$3,574 NZD
Price last confirmed 17 days ago
B
Retailer 2
-
$6,368 NZD
View
B
Retailer 3
-
$6,893 NZD
View
B
Retailer 4
-
$7,213 NZD
View
C
Retailer 5
-
$8,697 NZD
View
C
Retailer 6
-
$8,969 NZD
View
Most Expensive
C
Cape Diamonds
cert_2537433746 · Nov 5
$9,746 NZD
ZAR 88,508 ZAR
View
6 more retailers have this diamond
Prices start from $6,368 NZDSave up to $3,378 NZD

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
$6,368 NZD