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1.55ct J SI1 Round Natural Diamond

EX • J/SI1 • IGI 536201745

Shape and cutting style on the report: Round brilliant

Certificate IGI 536201745

Diamond specifications and retailer prices

From €4,505 EUR
As of November 6, 2026
Save €4,030 EUR (47%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: €8,535 EUR at Allurez · As of November 5, 2026
View at Allurez

About this 1.55ct natural round diamond

This 1.55ct natural round sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI 536201745. Listed at 15 retailers as of November 5, 2026, with prices from €4,505 to €8,535, a €4,030 spread on the same certified stone. Allurez lists it at €8,535. 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

1.55
Carat
J
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle41.4°
OriginNatural
Grading LabIGI
CertificateIGI 536201745
Dimensions7.41 × 7.37 × 4.62 mm
L/W Ratio1.01
Culet sizePointed
Top View
7.41 mm7.37 mm1.55 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 536201745
Side View
Table 57.5%Crown 34.5°Girdle: MediumPavilion 41.4°Culet: NoneDepth 62.6%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 6
Current: €8,535 EUR|Low: €2,471 EUR|High: €8,535 EUR|Avg: €3,341 EUR
Allurez
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
November 3, 2026
Retailer 12€2,642 EUR
Retailer 7€2,680 EUR
Retailer 14€2,696 EUR
Retailer 8€2,830 EUR
Retailer 4€2,922 EUR
Retailer 6€2,922 EUR
Retailer 16€3,034 EUR
Retailer 2€3,035 EUR
Retailer 3€3,370 EUR
Retailer 11€3,384 EUR
Retailer 10€3,398 EUR
Retailer 9€3,525 EUR
Retailer 15€3,531 EUR
Retailer 13€4,911 EUR
Retailer 5€5,089 EUR
Allurez€8,535 EUR

30 data points across 16 retailers

15 retailers€4,505 EUR to €8,535 EUR

Retailer 1
-
€2,642 EUR
Price last confirmed 19 days ago
Retailer 2
-
€2,680 EUR
View
Price last confirmed 14 days ago
Retailer 3
-
€2,830 EUR
View
Price last confirmed 14 days ago
Retailer 4
-
€2,922 EUR
View
Price last confirmed 21 days ago
Retailer 5
-
€2,922 EUR
View
Price last confirmed 15 days ago
Retailer 6
-
€3,034 EUR
View
Price last confirmed 15 days ago
Retailer 7
-
€3,035 EUR
View
Price last confirmed 14 days ago
Retailer 8
-
€3,050 EUR
View
Price last confirmed 19 days ago
Retailer 9
-
€3,370 EUR
View
Price last confirmed 14 days ago
Retailer 10
-
€3,384 EUR
View
Price last confirmed 14 days ago
Retailer 11
-
€3,525 EUR
View
Price last confirmed 15 days ago
B
Retailer 12
-
€4,505 EUR
View
Retailer 13
-
€4,911 EUR
View
Price last confirmed 16 days ago
Retailer 14
-
€5,089 EUR
View
Price last confirmed 17 days ago
Most Expensive
C
Allurez
5853908 · Nov 5
€8,535 EUR
$9,529 USD
View
14 more retailers have this diamond
Prices start from €4,505 EURSave up to €4,030 EUR

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
1.55ct Round
€4,505 EUR