Round|Natural|GIA

1.70ct M SI1 Round Natural Diamond

EX • M/SI1 • GIA 2558109024

Certificate GIA 2558109024

Diamond specifications and retailer prices

From $2,956 USD
As of November 6, 2026
Save $1,775 USD (38%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $6,824 USD 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
Color
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: $3,098 USD|Low: $2,931 USD|High: $4,765 USD|Avg: $3,782 USD|-1.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 4$2,956 USD
Retailer 1$3,098 USD
Retailer 7$3,596 USD
Retailer 5$3,705 USD
Retailer 6$4,023 USD
Retailer 3$4,353 USD
Retailer 2$4,731 USD

45 data points across 7 retailers

12 retailers$2,956 USD to $4,731 USD

A
Cheapest Retailer
-
$2,956 USD
A
Retailer 2
-
$3,098 USD
View
B+
Retailer 3
-
$3,596 USD
View
B+
Retailer 4
-
$3,705 USD
View
Retailer 5
-
$3,917 USD
View
Price last confirmed 18 days ago
Retailer 6
-
$3,917 USD
View
Price last confirmed 22 days ago
Retailer 7
-
$3,917 USD
View
Price last confirmed 23 days ago
B
Retailer 8
-
$4,023 USD
View
B
Retailer 9
-
$4,353 USD
View
Retailer 10
-
$4,519 USD
View
Price last confirmed 20 days ago
B
Retailer 11
-
$4,731 USD
View
Most Expensive
NZ Jewellers
e669a4be-7710-40b6-97ff-06ad5b512486 · Oct 17
$6,824 USD
View
Price last confirmed 20 days ago
11 more retailers have this diamond
Prices start from $2,956 USDSave up to $1,775 USD

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
$2,956 USD