Round|Natural|IGI

1.59ct I SI1 Round Natural Diamond

EX • I/SI1 • IGI 670479564

Shape and cutting style on the report: Round brilliant

Certificate IGI 670479564

Diamond specifications and retailer prices

From $3,643 USD
As of October 30, 2026
13 retailers carry this diamond
Most expensive: $7,151 USD at NZ Jewellers · As of September 19, 2026
View at NZ Jewellers

About this 1.59ct natural round diamond

This 1.59ct natural round sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI 670479564. Listed at 13 retailers as of October 30, 2026. 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

1.59
Carat
I
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle41.2°
OriginNatural
Grading LabIGI
CertificateIGI 670479564
Dimensions7.41 × 7.36 × 4.68 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
7.41 mm7.36 mm1.59 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 670479564
Side View
Table 56.0%Crown 36°Girdle: Slightly ThickPavilion 41.2°Culet: NoneDepth 63.4%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: $3,643 USD|Low: $3,597 USD|High: $7,162 USD|Avg: $4,500 USD|+1.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 29, 2026
Retailer 6$3,611 USD
Retailer 1$3,643 USD
Retailer 2$3,725 USD
Retailer 5$4,104 USD
Retailer 9$4,104 USD
Retailer 7$4,337 USD
Retailer 3$4,616 USD
Retailer 4$4,953 USD
Retailer 8$7,115 USD

29 data points across 9 retailers

13 retailers

Retailer 1
-
$3,611 USD
Price last confirmed 9 days ago
A
Retailer 2
-
$3,643 USD
View
Retailer 3
-
$3,725 USD
View
Price last confirmed 7 days ago
Retailer 4
-
$3,904 USD
View
Price last confirmed 96 days ago
Retailer 5
-
$4,104 USD
View
Price last confirmed 38 days ago
Retailer 6
-
$4,104 USD
View
Price last confirmed 9 days ago
Retailer 7
-
$4,232 USD
View
Price last confirmed 15 days ago
Retailer 8
-
$4,337 USD
£3,415 GBP
View
Price last confirmed 9 days ago
Retailer 9
-
$4,616 USD
€4,396 EUR
View
Price last confirmed 8 days ago
Retailer 10
-
$4,736 USD
View
Price last confirmed 39 days ago
Retailer 11
-
$4,953 USD
ZAR 80,024 ZAR
View
Price last confirmed 9 days ago
Retailer 12
-
$7,115 USD
£5,602 GBP
View
Price last confirmed 10 days ago
Most Expensive
NZ Jewellers
89e6f9b9-153f-4200-b5bb-c9a25bead4fb · Sep 19
$7,151 USD
View
Price last confirmed 41 days ago
12 more retailers have this diamond
Prices start from $3,643 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
1.59ct Round
$3,643 USD