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Radiant|Natural|GIA

1.03ct I SI1 Radiant Natural Diamond

GD • I/SI1 • GIA 1377931134

Certificate GIA 1377931134

Diamond specifications and retailer prices

From €2,190 EUR
As of November 5, 2026
Save €1,175 EUR (35%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: €3,365 EUR at Washington Diamond · As of November 6, 2026
View at Washington Diamond

About this 1.03ct natural radiant diamond

This 1.03ct natural radiant sits in the classic one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 1377931134. Listed at 11 retailers as of November 5, 2026, with prices from €2,190 to €3,365, a €1,175 spread on the same certified stone. Washington Diamond lists it at €3,365. 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

1.03
Carat
I
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1377931134
Dimensions5.59 × 5.40 × 3.82 mm
L/W Ratio1.04
Culet sizeNone
Top View
5.59 mm5.40 mm1.03 ctI / SI1
OriginNatural
CutGood
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 1377931134
Side View
Table 63.0%CrownGirdle: THK-THKPavilionCulet: NoneDepth 70.8%

Caratlytics Score

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B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: €2,957 EUR|Low: €2,190 EUR|High: €3,365 EUR|Avg: €2,564 EUR|+2.0%
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
Washington Diamond
November 6, 2026
Retailer 3€2,190 EUR
Retailer 2€2,203 EUR
Retailer 7€2,342 EUR
Retailer 11€2,372 EUR
Retailer 4€2,462 EUR
Retailer 6€2,509 EUR
Retailer 13€2,657 EUR
Retailer 9€2,660 EUR
Retailer 10€2,660 EUR
Retailer 12€2,677 EUR
Retailer 8€2,750 EUR
Retailer 5€2,863 EUR
Retailer 1€2,957 EUR
Washington Diamond€3,365 EUR

19 data points across 14 retailers

11 retailers€2,190 EUR to €3,365 EUR

B
Cheapest Retailer
-
€2,190 EUR
B
Retailer 2
-
€2,203 EUR
View
B
Retailer 3
-
€2,342 EUR
View
B
Retailer 4
-
€2,372 EUR
View
B
Retailer 5
-
€2,657 EUR
View
B
Retailer 6
-
€2,660 EUR
View
B
Retailer 7
-
€2,660 EUR
View
B
Retailer 8
-
€2,677 EUR
View
B
Retailer 9
-
€2,750 EUR
View
B
Retailer 10
-
€2,957 EUR
View
Most Expensive
C
Washington Diamond
1917994528 · Nov 6
€3,365 EUR
$3,757 USD
View
10 more retailers have this diamond
Prices start from €2,190 EURSave up to €1,175 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 Radiant
€2,190 EUR