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Round|Natural|IGI

1.55ct J SI1 Round Natural Diamond

EX • J/SI1 • IGI 819632954

Shape and cutting style on the report: Round brilliant

Certificate IGI 819632954

Diamond specifications and retailer prices

From £2,506 GBP
As of November 4, 2026
Save £2,413 GBP (49%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £4,919 GBP 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI 819632954. Listed at 16 retailers as of November 4, 2026, with prices from £2,506 to £4,919, a £2,413 spread on the same certified stone. NZ Jewellers lists it at £4,919. 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
FluorescenceFaint
Crown angle33°
Pavilion angle41.6°
OriginNatural
Grading LabIGI
CertificateIGI 819632954
Dimensions7.37 × 7.40 × 4.64 mm
L/W Ratio1.00
Girdle conditionFaceted
Top View
7.37 mm7.40 mm1.55 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 819632954
Side View
Table 57.0%Crown 33°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 62.8%

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: £4,919 GBP|Low: £2,506 GBP|High: £5,171 GBP|Avg: £3,206 GBP
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
Retailer 16
November 6, 2026
Retailer 7£2,506 GBP
Retailer 14£2,541 GBP
Retailer 5£2,606 GBP
Retailer 8£2,616 GBP
Retailer 4£2,701 GBP
Retailer 6£2,823 GBP
Retailer 16£2,823 GBP
Retailer 15£2,932 GBP
Retailer 9£2,958 GBP
Retailer 11£3,245 GBP
Retailer 3£3,258 GBP
Retailer 12£3,280 GBP
Retailer 2£3,354 GBP
Retailer 10£3,446 GBP
Retailer 13£4,709 GBP
NZ Jewellers£4,919 GBP

36 data points across 16 retailers

16 retailers£2,506 GBP to £4,919 GBP

A
Cheapest Retailer
-
£2,506 GBP
A
Retailer 2
-
£2,541 GBP
View
A
Retailer 3
-
£2,606 GBP
View
Final sale: no returns
A
Retailer 4
-
£2,616 GBP
View
A
Retailer 5
-
£2,701 GBP
View
B+
Retailer 6
-
£2,823 GBP
View
Retailer 7
-
£2,823 GBP
View
Price last confirmed 8 days ago
B+
Retailer 8
-
£2,932 GBP
View
A
Retailer 9
-
£2,958 GBP
View
B+
Retailer 10
-
£3,245 GBP
View
B+
Retailer 11
-
£3,258 GBP
View
B+
Retailer 12
-
£3,280 GBP
View
B+
Retailer 13
-
£3,354 GBP
View
B+
Retailer 14
-
£3,446 GBP
View
B
Retailer 15
-
£4,709 GBP
View
Most Expensive
B
NZ Jewellers
e9241f48-9b2c-4d57-a740-646cbf1c56e5 · Nov 5
£4,919 GBP
$6,621 USD
View
15 more retailers have this diamond
Prices start from £2,506 GBPSave up to £2,413 GBP

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
£2,506 GBP