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Round|Natural|GIA

1.00ct I SI1 Round Natural Diamond

VG • I/SI1 • GIA 2566053993

Certificate GIA 2566053993

Diamond specifications and retailer prices

From €1,386 EUR
HK$12,100 HKD
As of October 31, 2026
Save €2,468 EUR (64%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: €3,854 EUR at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1ct natural round diamond

This 1ct natural round sits in the classic one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by GIA 2566053993. Listed at 23 retailers as of October 30, 2026, with prices from €1,386 to €3,854, a €2,468 spread on the same certified stone. NZ Jewellers lists it at €3,854. 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
I
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle37.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2566053993
Dimensions6.17 × 6.24 × 4.01 mm
L/W Ratio1.01
Top View
6.17 mm6.24 mm1.00 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2566053993
Side View
Table 59.0%Crown 37.5°Girdle: THN-THKPavilion 40.8°Culet: NoneDepth 64.7%

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: €3,854 EUR|Low: €1,375 EUR|High: €4,006 EUR|Avg: €2,116 EUR|-3.8%
NZ Jewellers
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
Retailer 18
Retailer 19
Retailer 20
Retailer 21
November 1, 2026
Retailer 17€1,386 EUR
Retailer 16€1,406 EUR
Retailer 2€1,642 EUR
Retailer 8€1,666 EUR
Retailer 13€1,774 EUR
Retailer 9€1,816 EUR
Retailer 4€1,844 EUR
Retailer 7€1,844 EUR
Retailer 3€1,871 EUR
Retailer 14€1,929 EUR
Retailer 12€1,931 EUR
Retailer 5€1,967 EUR
Retailer 15€2,011 EUR
Retailer 6€2,023 EUR
Retailer 11€2,127 EUR
Retailer 19€2,266 EUR
Retailer 20€2,519 EUR
Retailer 18€2,524 EUR
Retailer 10€2,686 EUR
Retailer 21€3,247 EUR
NZ Jewellers€3,854 EUR

17 data points across 21 retailers

23 retailers€1,386 EUR to €3,854 EUR

A
Cheapest Retailer
-
€1,386 EUR
HK$12,100 HKD
A
Retailer 2
-
€1,406 EUR
₹149,597 INR
View
Retailer 3
-
€1,642 EUR
$1,835 USD
View
A
Retailer 4
-
€1,666 EUR
$1,861 USD
View
Retailer 5
-
€1,763 EUR
$1,970 USD
View
Price last confirmed 13 days ago
A
Retailer 6
-
€1,774 EUR
£1,560 GBP
View
A
Retailer 7
-
€1,816 EUR
$2,029 USD
View
A
Retailer 8
-
€1,844 EUR
$2,060 USD
View
A
Retailer 9
-
€1,844 EUR
$2,060 USD
View
B+
Retailer 10
-
€1,871 EUR
$2,090 USD
View
A
Retailer 11
-
€1,929 EUR
$2,155 USD
View
A
Retailer 12
-
€1,931 EUR
SGD 2,916 SGD
View
A
Retailer 13
-
€1,967 EUR
$2,198 USD
View
B+
Retailer 14
-
€2,011 EUR
£1,769 GBP
View
A
Retailer 15
-
€2,023 EUR
$2,260 USD
View
B+
Retailer 16
-
€2,127 EUR
$2,376 USD
View
B+
Retailer 17
-
€2,266 EUR
ZAR 40,896 ZAR
View
Retailer 18
-
€2,407 EUR
A$4,137 AUD
View
Price last confirmed 25 days ago
B+
Retailer 19
-
€2,519 EUR
View
B+
Retailer 20
-
€2,524 EUR
$2,820 USD
View
B+
Retailer 21
-
€2,686 EUR
$3,001 USD
View
B
Retailer 22
-
€3,247 EUR
£2,856 GBP
View
Most Expensive
B
NZ Jewellers
d7dd0661-fee1-4ae8-a928-035d6a473d34 · Oct 30
€3,854 EUR
$4,306 USD
View
22 more retailers have this diamond
Prices start from €1,386 EURSave up to €2,468 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
€1,386 EUR