Marquise|Natural|GIA

1.00ct I SI1 Marquise Natural Diamond

EX • I/SI1 • GIA 1558052400

Certificate GIA 1558052400

Diamond specifications and retailer prices

From €3,108 EUR
As of November 3, 2026
Save €760 EUR (20%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: €5,659 EUR at NZ Jewellers · As of October 21, 2026
View at NZ Jewellers

About this 1ct natural marquise diamond

This 1ct natural marquise sits in the classic one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1558052400. Listed at 16 retailers as of November 3, 2026, with a relatively tight 24% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1558052400
Dimensions9.99 × 5.30 × 3.09 mm
L/W Ratio1.88
Culet sizeNone
Top View
9.99 mm5.30 mm1.00 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1558052400
Side View
Table 62.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 58.2%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 3
Current: €5,659 EUR|Low: €2,612 EUR|High: €5,659 EUR|Avg: €3,457 EUR
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
November 4, 2026
Retailer 17€2,612 EUR
Retailer 3€2,677 EUR
Retailer 5€2,849 EUR
Retailer 7€2,942 EUR
Retailer 16€2,942 EUR
Retailer 15€3,056 EUR
Retailer 10€3,108 EUR
Retailer 12€3,167 EUR
Retailer 4€3,337 EUR
Retailer 8€3,395 EUR
Retailer 6€3,479 EUR
Retailer 9€3,678 EUR
Retailer 13€3,774 EUR
Retailer 2€3,868 EUR
Retailer 11€3,920 EUR
Retailer 14€5,460 EUR
NZ Jewellers€5,659 EUR

34 data points across 17 retailers

16 retailers€3,108 EUR to €3,868 EUR

Retailer 1
-
€2,612 EUR
Price last confirmed 12 days ago
Retailer 2
-
€2,677 EUR
View
Price last confirmed 14 days ago
Retailer 3
-
€2,849 EUR
View
Price last confirmed 12 days ago
Retailer 4
-
€2,942 EUR
View
Price last confirmed 19 days ago
Retailer 5
-
€2,942 EUR
View
Price last confirmed 13 days ago
Retailer 6
-
€2,956 EUR
View
Price last confirmed 17 days ago
Retailer 7
-
€3,056 EUR
View
Price last confirmed 19 days ago
B
Retailer 8
-
€3,108 EUR
View
Retailer 9
-
€3,337 EUR
View
Price last confirmed 14 days ago
Retailer 10
-
€3,395 EUR
View
Price last confirmed 14 days ago
Retailer 11
-
€3,479 EUR
View
Price last confirmed 27 days ago
Retailer 12
-
€3,678 EUR
View
Price last confirmed 12 days ago
B
Retailer 13
-
€3,868 EUR
View
Retailer 14
-
€3,920 EUR
View
Price last confirmed 13 days ago
Retailer 15
-
€5,460 EUR
View
Price last confirmed 14 days ago
Most Expensive
NZ Jewellers
3217f459-345e-46b9-83f9-6e3898b8c971 · Oct 21
€5,659 EUR
$6,326 USD
View
Price last confirmed 14 days ago
15 more retailers have this diamond
Prices start from €3,108 EURSave up to €760 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
1.00ct Marquise
€3,108 EUR