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Round|Natural|GIA

1.03ct F SI1 Round Natural Diamond

EX • F/SI1 • GIA 1559557053

Certificate GIA 1559557053

Diamond specifications and retailer prices

From €2,801 EUR
$3,142 USD
As of October 28, 2026
Save €3,267 EUR (54%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: €6,068 EUR at NZ Jewellers · As of October 27, 2026
View at NZ Jewellers

About this 1.03ct natural round diamond

This 1.03ct natural round sits in the classic one-carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1559557053. Listed at 17 retailers as of October 27, 2026, with prices from €2,801 to €6,068, a €3,267 spread on the same certified stone. NZ Jewellers lists it at €6,068. 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

1.03
Carat
F
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1559557053
Dimensions6.40 × 6.43 × 4.02 mm
L/W Ratio1.00
Girdle conditionSlightly Thick
Culet sizeNone
Key to symbols
Twinning Wisp, Crystal
Top View
6.40 mm6.43 mm1.03 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 1559557053
Side View
Table 58.0%Crown 36°Girdle: Slightly ThickPavilion 40.8°Culet: NoneDepth 62.7%

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: Oct 28
Current: €4,054 EUR|Low: €2,801 EUR|High: €5,895 EUR|Avg: €3,763 EUR|+17.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 9€2,801 EUR
Retailer 8€3,036 EUR
Retailer 10€3,155 EUR
Retailer 6€3,579 EUR
Retailer 7€3,735 EUR
Retailer 4€3,936 EUR
Retailer 2€3,943 EUR
Retailer 1€4,054 EUR
Retailer 5€4,241 EUR
Retailer 3€5,856 EUR

39 data points across 10 retailers

17 retailers€2,801 EUR to €6,068 EUR

B+
Cheapest Retailer
-
€2,801 EUR
$3,142 USD
Retailer 2
-
€3,036 EUR
$3,405 USD
View
Price last confirmed 5 days ago
Retailer 3
-
€3,155 EUR
$3,539 USD
View
Price last confirmed 8 days ago
Retailer 4
-
€3,155 EUR
$3,539 USD
View
Price last confirmed 7 days ago
Retailer 5
-
€3,155 EUR
$3,539 USD
View
Price last confirmed 52 days ago
Retailer 6
-
€3,277 EUR
$3,675 USD
View
Price last confirmed 8 days ago
B+
Retailer 7
-
€3,579 EUR
$4,014 USD
View
Retailer 8
-
€3,641 EUR
$4,084 USD
View
Price last confirmed 56 days ago
B+
Retailer 9
-
€3,641 EUR
$4,084 USD
View
Retailer 10
-
€3,735 EUR
A$6,444 AUD
View
Price last confirmed 29 days ago
B
Retailer 11
-
€3,936 EUR
View
Retailer 12
-
€3,943 EUR
$4,423 USD
View
Price last confirmed 10 days ago
B
Retailer 13
-
€4,054 EUR
£3,580 GBP
View
B
Retailer 14
-
€4,241 EUR
ZAR 76,853 ZAR
View
B
Retailer 15
-
€5,856 EUR
£5,172 GBP
View
Retailer 16
-
€6,068 EUR
$6,806 USD
View
Price last confirmed 53 days ago
Most Expensive
B
NZ Jewellers
040bf454-6994-43d5-bf2a-fd6506d0bf8e · Oct 27
€6,068 EUR
$6,806 USD
View
16 more retailers have this diamond
Prices start from €2,801 EURSave up to €3,267 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+
1.03ct Round
€2,801 EUR