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1.70ct M SI1 Round Natural Diamond

EX • M/SI1 • GIA 2528386444

Certificate GIA 2528386444

Diamond specifications and retailer prices

From $5,749 NZD
As of November 6, 2026
Save $3,343 NZD (37%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $9,092 NZD at Cape Diamonds · As of November 5, 2026
View at Cape Diamonds

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 2528386444. Listed at 10 retailers as of November 5, 2026, with prices from $5,749 to $9,092, a $3,343 spread on the same certified stone. Cape Diamonds lists it at $9,092. 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 angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 2528386444
Dimensions7.57 × 7.62 × 4.78 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Top View
7.57 mm7.62 mm1.70 ctM / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2528386444
Side View
Table 55.0%Crown 36.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 63.0%

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 6
Current: $9,092 NZD|Low: $5,702 NZD|High: $9,156 NZD|Avg: $7,222 NZD|+1.5%
Cape Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 4$5,749 NZD
Retailer 2$6,002 NZD
Retailer 5$6,698 NZD
Retailer 7$6,987 NZD
Retailer 6$7,468 NZD
Retailer 3$8,376 NZD
Cape Diamonds$9,092 NZD

44 data points across 7 retailers

10 retailers$5,749 NZD to $9,092 NZD

B+
Cheapest Retailer
-
$5,749 NZD
B+
Retailer 2
-
$6,002 NZD
View
B+
Retailer 3
-
$6,698 NZD
View
B+
Retailer 4
-
$6,987 NZD
View
B
Retailer 5
-
$7,089 NZD
View
Retailer 6
-
$7,448 NZD
View
Price last confirmed 21 days ago
B
Retailer 7
-
$7,468 NZD
View
B
Retailer 8
-
$7,715 NZD
View
B
Retailer 9
-
$8,376 NZD
View
Most Expensive
B
Cape Diamonds
cert_2528386444 · Nov 5
$9,092 NZD
ZAR 81,429 ZAR
View
9 more retailers have this diamond
Prices start from $5,749 NZDSave up to $3,343 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+
1.70ct Round
$5,749 NZD