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Round|Natural|GIA

1.55ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 7556552522

Certificate GIA 7556552522

Diamond specifications and retailer prices

From £4,106 GBP
As of November 4, 2026
Save £2,448 GBP (37%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £6,555 GBP at MOH London · As of November 1, 2026
View at MOH London

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 GIA 7556552522. Listed at 12 retailers as of November 1, 2026, with prices from £4,106 to £6,555, a £2,448 spread on the same certified stone. MOH London lists it at £6,555. 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 angle35.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 7556552522
Dimensions7.37 × 7.33 × 4.60 mm
L/W Ratio1.01
Star length50%
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Cloud, Needle
Top View
7.37 mm7.33 mm1.55 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7556552522
Side View
Table 58.0%Crown 35.5°Girdle: Slightly ThickPavilion 41°Culet: NoneDepth 62.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: £6,555 GBP|Low: £4,106 GBP|High: £6,634 GBP|Avg: £4,846 GBP|-0.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 11£4,106 GBP
Retailer 7£4,244 GBP
Retailer 4£4,269 GBP
Retailer 9£4,449 GBP
Retailer 10£4,449 GBP
Retailer 3£4,456 GBP
Retailer 6£4,539 GBP
Retailer 8£5,133 GBP
Retailer 2£5,285 GBP
Retailer 5£5,429 GBP
MOH London£6,555 GBP

33 data points across 11 retailers

12 retailers£4,106 GBP to £6,555 GBP

B
Cheapest Retailer
-
£4,106 GBP
Final sale: no returns
B+
Retailer 2
-
£4,244 GBP
View
B+
Retailer 3
-
£4,269 GBP
View
Retailer 4
-
£4,449 GBP
View
Price last confirmed 15 days ago
Retailer 5
-
£4,449 GBP
View
Price last confirmed 15 days ago
Retailer 6
-
£4,456 GBP
View
Price last confirmed 28 days ago
B+
Retailer 7
-
£4,539 GBP
View
Retailer 8
-
£4,572 GBP
View
Price last confirmed 11 days ago
Retailer 9
-
£5,133 GBP
View
Price last confirmed 14 days ago
B
Retailer 10
-
£5,285 GBP
View
B
Retailer 11
-
£5,429 GBP
View
Most Expensive
B
MOH London
76667EFC1 · Nov 1
£6,555 GBP
View
11 more retailers have this diamond
Prices start from £4,106 GBPSave up to £2,448 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.

B+
1.55ct Round
£4,106 GBP