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Round|Natural|GIA

1.55ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 1539355495

Certificate GIA 1539355495

Diamond specifications and retailer prices

From €4,285 EUR
As of November 4, 2026
Save €2,280 EUR (35%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: €6,565 EUR at Cape Diamonds · As of November 5, 2026
View at Cape Diamonds

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 1539355495. Listed at 12 retailers as of November 4, 2026, with prices from €4,285 to €6,565, a €2,280 spread on the same certified stone. Cape Diamonds lists it at €6,565. 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°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1539355495
Dimensions7.41 × 7.36 × 4.58 mm
L/W Ratio1.01
Cert comments
Additional clouds, pinpoints and surface graining are not shown.
Key to symbols
Crystal, Cloud, Feather
Top View
7.41 mm7.36 mm1.55 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1539355495
Side View
Table 58.0%Crown 35°Girdle: MED-THKPavilion 40.8°Culet: NoneDepth 62.0%

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: €6,565 EUR|Low: €4,285 EUR|High: €6,804 EUR|Avg: €5,351 EUR|-3.3%
Cape Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 3€4,285 EUR
Retailer 6€4,563 EUR
Retailer 5€5,107 EUR
Retailer 10€5,159 EUR
Retailer 7€5,162 EUR
Retailer 8€5,446 EUR
Retailer 9€5,446 EUR
Retailer 4€5,493 EUR
Retailer 2€5,515 EUR
Retailer 11€5,625 EUR
Cape Diamonds€6,565 EUR

44 data points across 11 retailers

12 retailers€4,285 EUR to €6,565 EUR

Retailer 1
-
€3,931 EUR
Price last confirmed 68 days ago
B+
Retailer 2
-
€4,285 EUR
View
B+
Retailer 3
-
€4,563 EUR
View
B+
Retailer 4
-
€5,107 EUR
View
B+
Retailer 5
-
€5,159 EUR
View
B+
Retailer 6
-
€5,162 EUR
View
B
Retailer 7
-
€5,446 EUR
View
B
Retailer 8
-
€5,446 EUR
View
B
Retailer 9
-
€5,493 EUR
View
B
Retailer 10
-
€5,515 EUR
View
B
Retailer 11
-
€5,625 EUR
View
Most Expensive
B
Cape Diamonds
cert_1539355495 · Nov 5
€6,565 EUR
ZAR 118,408 ZAR
View
11 more retailers have this diamond
Prices start from €4,285 EURSave up to €2,280 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
€4,285 EUR