Round|Natural|GIA

1.00ct D SI2 Round Natural Diamond

EX • D/SI2 • GIA 6521858903

Certificate GIA 6521858903

Diamond specifications and retailer prices

From €2,132 EUR
As of November 6, 2026
Save €2,488 EUR (54%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: €4,827 EUR at NZ Jewellers · As of September 26, 2026
View at NZ Jewellers

About this 1ct natural round diamond

This 1ct natural round sits in the classic one-carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6521858903. Listed at 21 retailers as of November 4, 2026, with a 117% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.00
Carat
D
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle34°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6521858903
Dimensions6.46 × 6.42 × 3.88 mm
L/W Ratio1.01
Top View
6.46 mm6.42 mm1.00 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6521858903
Side View
Table 61.0%Crown 34°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 60.2%

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: €2,210 EUR|Low: €2,132 EUR|High: €4,690 EUR|Avg: €3,124 EUR|-2.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 8€2,132 EUR
Retailer 1€2,210 EUR
Retailer 10€2,533 EUR
Retailer 2€2,557 EUR
Retailer 6€2,672 EUR
Retailer 4€2,849 EUR
Retailer 3€2,963 EUR
Retailer 5€3,218 EUR
Retailer 7€4,620 EUR
Retailer 9€4,673 EUR

36 data points across 10 retailers

21 retailers€2,132 EUR to €4,620 EUR

A
Cheapest Retailer
-
€2,132 EUR
A
Retailer 2
-
€2,210 EUR
View
A
Retailer 3
-
€2,533 EUR
View
A
Retailer 4
-
€2,557 EUR
View
Final sale: no returns
A
Retailer 5
-
€2,616 EUR
View
A
Retailer 6
-
€2,672 EUR
View
Retailer 7
-
€2,771 EUR
View
Price last confirmed 44 days ago
Retailer 8
-
€2,771 EUR
View
Price last confirmed 25 days ago
Retailer 9
-
€2,771 EUR
View
Price last confirmed 28 days ago
B+
Retailer 10
-
€2,806 EUR
View
B+
Retailer 11
-
€2,849 EUR
View
Retailer 12
-
€2,878 EUR
View
Price last confirmed 38 days ago
B+
Retailer 13
-
€2,898 EUR
View
B+
Retailer 14
-
€2,963 EUR
View
Retailer 15
-
€3,197 EUR
View
Price last confirmed 45 days ago
Retailer 16
-
€3,197 EUR
View
Price last confirmed 28 days ago
B+
Retailer 17
-
€3,218 EUR
View
B
Retailer 18
-
€4,620 EUR
View
Retailer 19
-
€4,673 EUR
View
Price last confirmed 9 days ago
Retailer 20
-
€4,827 EUR
View
Price last confirmed 46 days ago
Most Expensive
NZ Jewellers
648891c1-c419-4a43-b1f7-bc6f347ebb64 · Sep 26
€4,827 EUR
$5,418 USD
View
Price last confirmed 40 days ago
20 more retailers have this diamond
Prices start from €2,132 EURSave up to €2,488 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
€2,132 EUR