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Round|Natural|GIA

1.70ct M SI1 Round Natural Diamond

EX • M/SI1 • GIA 2488555300

Certificate GIA 2488555300

Diamond specifications and retailer prices

From $5,294 NZD
As of November 1, 2026
Save $6,424 NZD (55%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $11,718 NZD at NZ Jewellers · As of November 5, 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 2488555300. Listed at 10 retailers as of November 1, 2026, with prices from $5,294 to $11,718, a $6,424 spread on the same certified stone. NZ Jewellers lists it at $11,718. 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
SymmetryVery Good
FluorescenceStrong
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 2488555300
Dimensions7.61 × 7.54 × 4.73 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Top View
7.61 mm7.54 mm1.70 ctM / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceStrong
CertificateGIA 2488555300
Side View
Table 58.0%Crown 36°Girdle: ThickPavilion 40.6°Culet: NoneDepth 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 1
Current: $11,718 NZD|Low: $5,294 NZD|High: $11,718 NZD|Avg: $6,832 NZD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 5, 2026
Retailer 10$5,294 NZD
Retailer 9$5,408 NZD
Retailer 8$5,881 NZD
Retailer 5$6,094 NZD
Retailer 7$6,094 NZD
Retailer 4$6,328 NZD
Retailer 6$7,032 NZD
Retailer 3$7,344 NZD
Retailer 2$8,210 NZD
NZ Jewellers$11,718 NZD

26 data points across 10 retailers

10 retailers$5,294 NZD to $11,718 NZD

A
Cheapest Retailer
-
$5,294 NZD
B+
Retailer 2
-
$5,408 NZD
View
B+
Retailer 3
-
$5,881 NZD
View
Retailer 4
-
$6,094 NZD
View
Price last confirmed 8 days ago
B+
Retailer 5
-
$6,094 NZD
View
B+
Retailer 6
-
$6,328 NZD
View
B
Retailer 7
-
$7,032 NZD
View
B
Retailer 8
-
$7,344 NZD
View
B
Retailer 9
-
$8,210 NZD
View
Most Expensive
C
NZ Jewellers
615cdd80-53c7-4ec5-aaeb-bed7f5a2e6cb · Nov 5
$11,718 NZD
$6,496 USD
View
9 more retailers have this diamond
Prices start from $5,294 NZDSave up to $6,424 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.

A
1.70ct Round
$5,294 NZD