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Round|Natural|GIA

1.00ct J SI1 Round Natural Diamond

GD • J/SI1 • GIA 1437705735

Certificate GIA 1437705735

Diamond specifications and retailer prices

From €1,295 EUR
As of November 6, 2026
Save €2,486 EUR (66%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: €3,781 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 standard cut grade and certified by GIA 1437705735. Listed at 21 retailers as of November 5, 2026, with prices from €1,295 to €3,781, a €2,486 spread on the same certified stone. NZ Jewellers lists it at €3,781. 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
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle37.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 1437705735
Dimensions6.23 × 6.16 × 4.07 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Indented Natural, Natural
Top View
6.23 mm6.16 mm1.00 ctJ / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1437705735
Side View
Table 56.0%Crown 37.5°Girdle: ThickPavilion 41°Culet: NoneDepth 65.7%

Caratlytics Score

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

Price History

Last verified: Nov 6
Current: €1,295 EUR|Low: €1,295 EUR|High: €3,206 EUR|Avg: €1,991 EUR|-3.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 1€1,295 EUR
Retailer 9€1,318 EUR
Retailer 2€1,670 EUR
Retailer 11€1,679 EUR
Retailer 8€1,724 EUR
Retailer 4€1,829 EUR
Retailer 6€1,953 EUR
Retailer 5€2,207 EUR
Retailer 7€2,210 EUR
Retailer 3€2,229 EUR
Retailer 10€3,186 EUR

38 data points across 11 retailers

21 retailers€1,295 EUR to €3,781 EUR

A
Cheapest Retailer
-
€1,295 EUR
B+
Retailer 2
-
€1,318 EUR
View
B+
Retailer 3
-
€1,600 EUR
View
B+
Retailer 4
-
€1,670 EUR
View
Final sale: no returns
B+
Retailer 5
-
€1,679 EUR
View
B+
Retailer 6
-
€1,724 EUR
View
B+
Retailer 7
-
€1,763 EUR
View
Retailer 8
-
€1,808 EUR
View
Price last confirmed 8 days ago
B
Retailer 9
-
€1,808 EUR
View
B
Retailer 10
-
€1,829 EUR
View
B
Retailer 11
-
€1,841 EUR
View
B
Retailer 12
-
€1,892 EUR
View
B
Retailer 13
-
€1,932 EUR
View
B
Retailer 14
-
€1,953 EUR
View
B
Retailer 15
-
€2,087 EUR
View
B
Retailer 16
-
€2,207 EUR
View
B
Retailer 17
-
€2,210 EUR
View
Retailer 18
-
€2,229 EUR
View
Price last confirmed 32 days ago
C
Retailer 19
-
€3,120 EUR
View
Retailer 20
-
€3,186 EUR
View
Price last confirmed 8 days ago
Most Expensive
C
NZ Jewellers
e0447a58-148d-4c6f-94b5-4afb52760dae · Nov 5
€3,781 EUR
$4,222 USD
View
20 more retailers have this diamond
Prices start from €1,295 EURSave up to €2,486 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.

A
1.00ct Round
€1,295 EUR