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1.55ct I SI2 Round Natural Diamond

EX • I/SI2 • IGI 668457801

Shape and cutting style on the report: Round brilliant

Certificate IGI 668457801

Diamond specifications and retailer prices

From €2,958 EUR
$3,305 USD
As of November 1, 2026
Save €2,994 EUR (50%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: €5,952 EUR at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.55ct natural round diamond

This 1.55ct natural round sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI 668457801. Listed at 13 retailers as of October 30, 2026, with prices from €2,958 to €5,952, a €2,994 spread on the same certified stone. NZ Jewellers lists it at €5,952. 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
I
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle33.4°
Pavilion angle40.8°
OriginNatural
Grading LabIGI
CertificateIGI 668457801
Dimensions7.45 × 7.52 × 4.49 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
7.45 mm7.52 mm1.55 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 668457801
Side View
Table 58.0%Crown 33.4°Girdle: THN-STKPavilion 40.8°Culet: NoneDepth 59.9%

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: €5,952 EUR|Low: €2,890 EUR|High: €5,952 EUR|Avg: €3,846 EUR
NZ Jewellers
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
November 1, 2026
Retailer 11€2,958 EUR
Retailer 13€3,033 EUR
Retailer 5€3,053 EUR
Retailer 12€3,153 EUR
Retailer 4€3,417 EUR
Retailer 15€3,417 EUR
Retailer 7€3,548 EUR
Retailer 14€3,548 EUR
Retailer 2€3,696 EUR
Retailer 10€3,939 EUR
Retailer 3€3,942 EUR
Retailer 9€3,983 EUR
Retailer 6€4,066 EUR
Retailer 8€5,713 EUR
NZ Jewellers€5,952 EUR

40 data points across 15 retailers

13 retailers€2,958 EUR to €5,952 EUR

A
Cheapest Retailer
-
€2,958 EUR
$3,305 USD
A
Retailer 2
-
€3,033 EUR
$3,388 USD
View
A
Retailer 3
-
€3,153 EUR
$3,523 USD
View
Final sale: no returns
A
Retailer 4
-
€3,417 EUR
$3,817 USD
View
A
Retailer 5
-
€3,417 EUR
$3,817 USD
View
A
Retailer 6
-
€3,548 EUR
$3,963 USD
View
A
Retailer 7
-
€3,548 EUR
$3,964 USD
View
A
Retailer 8
-
€3,696 EUR
£3,251 GBP
View
A
Retailer 9
-
€3,939 EUR
£3,465 GBP
View
B+
Retailer 10
-
€3,942 EUR
$4,404 USD
View
A
Retailer 11
-
€3,983 EUR
View
B+
Retailer 12
-
€5,713 EUR
£5,026 GBP
View
Most Expensive
B
NZ Jewellers
e9cd51c0-6bd9-4603-b3f2-4a85b77b4a21 · Oct 30
€5,952 EUR
$6,650 USD
View
12 more retailers have this diamond
Prices start from €2,958 EURSave up to €2,994 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.

A
1.55ct Round
€2,958 EUR