Round|Natural|GIA

1.00ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 6505413429

Certificate GIA 6505413429

Diamond specifications and retailer prices

From €2,498 EUR
HK$21,800 HKD
As of October 31, 2026
Save €3,004 EUR (55%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: €5,905 EUR at NZ Jewellers · As of October 3, 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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6505413429. Listed at 22 retailers as of October 29, 2026, with a 120% 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
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 6505413429
Dimensions6.35 × 6.39 × 3.99 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Crystal, Feather, Cloud, Needle
Top View
6.35 mm6.39 mm1.00 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6505413429
Side View
Table 59.0%Crown 34.5°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 62.7%

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: Oct 31
Current: €4,022 EUR|Low: €2,475 EUR|High: €5,612 EUR|Avg: €3,388 EUR|+0.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
October 31, 2026
Retailer 11€2,498 EUR
Retailer 10€2,509 EUR
Retailer 3€2,781 EUR
Retailer 7€2,905 EUR
Retailer 5€2,959 EUR
Retailer 2€3,020 EUR
Retailer 16€3,142 EUR
Retailer 14€3,158 EUR
Retailer 8€3,172 EUR
Retailer 15€3,272 EUR
Retailer 12€3,399 EUR
Retailer 13€3,403 EUR
Retailer 9€3,561 EUR
Retailer 6€3,675 EUR
Retailer 4€3,774 EUR
Retailer 1€4,022 EUR
Retailer 17€5,502 EUR

22 data points across 17 retailers

22 retailers€2,498 EUR to €5,502 EUR

A
Cheapest Retailer
-
€2,498 EUR
HK$21,800 HKD
A
Retailer 2
-
€2,509 EUR
₹266,994 INR
View
A
Retailer 3
-
€2,781 EUR
A$4,780 AUD
View
A
Retailer 4
-
€2,905 EUR
$3,246 USD
View
A
Retailer 5
-
€2,959 EUR
$3,306 USD
View
B+
Retailer 6
-
€3,020 EUR
$3,374 USD
View
Final sale: no returns
B+
Retailer 7
-
€3,142 EUR
$3,510 USD
View
B+
Retailer 8
-
€3,158 EUR
£2,778 GBP
View
Retailer 9
-
€3,172 EUR
SGD 4,789 SGD
View
Price last confirmed 10 days ago
B+
Retailer 10
-
€3,272 EUR
$3,656 USD
View
B+
Retailer 11
-
€3,362 EUR
A$5,778 AUD
View
Retailer 12
-
€3,390 EUR
$3,787 USD
View
Price last confirmed 28 days ago
B+
Retailer 13
-
€3,399 EUR
£2,990 GBP
View
B+
Retailer 14
-
€3,403 EUR
$3,802 USD
View
Retailer 15
-
€3,546 EUR
$3,962 USD
View
Price last confirmed 32 days ago
Retailer 16
-
€3,561 EUR
A$6,121 AUD
View
Price last confirmed 23 days ago
B+
Retailer 17
-
€3,675 EUR
View
B+
Retailer 18
-
€3,774 EUR
£3,320 GBP
View
Retailer 19
-
€3,911 EUR
$4,369 USD
View
Price last confirmed 27 days ago
B+
Retailer 20
-
€4,022 EUR
ZAR 72,600 ZAR
View
B
Retailer 21
-
€5,502 EUR
£4,840 GBP
View
Most Expensive
NZ Jewellers
fffea347-5731-4485-9be8-40672ac21573 · Oct 3
€5,905 EUR
$6,597 USD
View
Price last confirmed 28 days ago
21 more retailers have this diamond
Prices start from €2,498 EURSave up to €3,004 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
€2,498 EUR