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1.55ct L SI1 Round Natural Diamond

EX • L/SI1 • IGI 670479391

Shape and cutting style on the report: Round brilliant

Certificate IGI 670479391

Diamond specifications and retailer prices

From $1,946 USD
As of November 4, 2026
Save $2,559 USD (57%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $4,505 USD at NZ Jewellers · As of November 5, 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 L colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI 670479391. Listed at 11 retailers as of November 4, 2026, with prices from $1,946 to $4,505, a $2,559 spread on the same certified stone. NZ Jewellers lists it at $4,505. 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
L
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle32.9°
Pavilion angle40.6°
OriginNatural
Grading LabIGI
CertificateIGI 670479391
Dimensions7.36 × 7.43 × 4.56 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
7.36 mm7.43 mm1.55 ctL / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI 670479391
Side View
Table 55.0%Crown 32.9°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 61.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $4,505 USD|Low: $1,946 USD|High: $4,909 USD|Avg: $2,603 USD|-1.8%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 6$1,946 USD
Retailer 3$2,064 USD
Retailer 10$2,155 USD
Retailer 9$2,175 USD
Retailer 11$2,193 USD
Retailer 7$2,254 USD
Retailer 2$2,346 USD
Retailer 8$2,486 USD
Retailer 4$2,630 USD
Retailer 5$2,674 USD
NZ Jewellers$4,505 USD

38 data points across 11 retailers

11 retailers$1,946 USD to $4,505 USD

A
Cheapest Retailer
-
$1,946 USD
A
Retailer 2
-
$2,064 USD
View
A
Retailer 3
-
$2,155 USD
View
A
Retailer 4
-
$2,175 USD
View
Retailer 5
-
$2,193 USD
View
Price last confirmed 8 days ago
A
Retailer 6
-
$2,254 USD
View
A
Retailer 7
-
$2,346 USD
View
A
Retailer 8
-
$2,486 USD
View
A
Retailer 9
-
$2,630 USD
View
B+
Retailer 10
-
$2,674 USD
View
Most Expensive
B
NZ Jewellers
7dd6dd44-cec5-4278-a7e2-034ae5b383da · Nov 5
$4,505 USD
View
10 more retailers have this diamond
Prices start from $1,946 USDSave up to $2,559 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
1.55ct Round
$1,946 USD