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Round|Natural|GIA

1.00ct J SI1 Round Natural Diamond

VG • J/SI1 • GIA 5423535519

Certificate GIA 5423535519

Diamond specifications and retailer prices

From €1,568 EUR
As of November 6, 2026
Save €2,533 EUR (62%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: €4,101 EUR at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1ct natural round diamond

This 1ct natural round sits in the classic one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by GIA 5423535519. Listed at 20 retailers as of November 5, 2026, with prices from €1,568 to €4,101, a €2,533 spread on the same certified stone. NZ Jewellers lists it at €4,101. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.00
Carat
J
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceFaint
Crown angle38.5°
Pavilion angle39.8°
OriginNatural
Grading LabGIA
CertificateGIA 5423535519
Dimensions6.30 × 6.25 × 3.97 mm
L/W Ratio1.01
Top View
6.30 mm6.25 mm1.00 ctJ / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 5423535519
Side View
Table 57.0%Crown 38.5°Girdle: STK-THKPavilion 39.8°Culet: NoneDepth 63.3%

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 6
Current: €2,286 EUR|Low: €1,409 EUR|High: €3,478 EUR|Avg: €2,245 EUR|-0.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 5, 2026
Retailer 7€1,605 EUR
Retailer 9€1,640 EUR
Retailer 8€1,652 EUR
Retailer 2€1,859 EUR
Retailer 5€2,118 EUR
Retailer 1€2,286 EUR
Retailer 4€2,394 EUR
Retailer 10€2,412 EUR
Retailer 3€2,487 EUR
Retailer 6€3,427 EUR

42 data points across 10 retailers

20 retailers€1,568 EUR to €4,101 EUR

B+
Cheapest Retailer
-
€1,568 EUR
B+
Retailer 2
-
€1,601 EUR
View
B+
Retailer 3
-
€1,605 EUR
View
B+
Retailer 4
-
€1,640 EUR
View
Final sale: no returns
B+
Retailer 5
-
€1,652 EUR
View
B+
Retailer 6
-
€1,671 EUR
View
Retailer 7
-
€1,777 EUR
View
Price last confirmed 8 days ago
B+
Retailer 8
-
€1,777 EUR
View
B
Retailer 9
-
€1,809 EUR
View
B+
Retailer 10
-
€1,859 EUR
View
B
Retailer 11
-
€2,030 EUR
View
B
Retailer 12
-
€2,050 EUR
View
B
Retailer 13
-
€2,118 EUR
View
B
Retailer 14
-
€2,259 EUR
View
B
Retailer 15
-
€2,286 EUR
View
B
Retailer 16
-
€2,394 EUR
View
Retailer 17
-
€2,412 EUR
View
Price last confirmed 31 days ago
B
Retailer 18
-
€2,487 EUR
View
B
Retailer 19
-
€3,427 EUR
View
Most Expensive
C
NZ Jewellers
9ae6d256-84b7-426f-a4bd-e2661672ff5a · Nov 5
€4,101 EUR
$4,579 USD
View
19 more retailers have this diamond
Prices start from €1,568 EURSave up to €2,533 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+
1.00ct Round
€1,568 EUR