Marquise|Natural|GIA

1.00ct I SI1 Marquise Natural Diamond

EX • I/SI1 • GIA 1558052400

Certificate GIA 1558052400

Diamond specifications and retailer prices

From €3,097 EUR
$3,474 USD
As of November 1, 2026
Save €796 EUR (20%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: €5,640 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 1, 2026, with a 26% 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
I
Color
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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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: €5,640 EUR|Low: €2,603 EUR|High: €5,640 EUR|Avg: €3,448 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 1, 2026
Retailer 17€2,603 EUR
Retailer 3€2,668 EUR
Retailer 5€2,840 EUR
Retailer 7€2,932 EUR
Retailer 16€2,932 EUR
Retailer 15€3,046 EUR
Retailer 10€3,097 EUR
Retailer 12€3,157 EUR
Retailer 4€3,326 EUR
Retailer 8€3,384 EUR
Retailer 6€3,468 EUR
Retailer 9€3,666 EUR
Retailer 13€3,762 EUR
Retailer 2€3,894 EUR
Retailer 11€3,907 EUR
Retailer 14€5,443 EUR
NZ Jewellers€5,640 EUR

34 data points across 17 retailers

16 retailers€3,097 EUR to €3,894 EUR

Retailer 1
-
€2,603 EUR
$2,920 USD
Price last confirmed 10 days ago
Retailer 2
-
€2,668 EUR
$2,993 USD
View
Price last confirmed 12 days ago
Retailer 3
-
€2,840 EUR
$3,185 USD
View
Price last confirmed 10 days ago
Retailer 4
-
€2,932 EUR
$3,289 USD
View
Price last confirmed 17 days ago
Retailer 5
-
€2,932 EUR
$3,289 USD
View
Price last confirmed 11 days ago
Retailer 6
-
€2,946 EUR
$3,304 USD
View
Price last confirmed 15 days ago
Retailer 7
-
€3,046 EUR
$3,416 USD
View
Price last confirmed 17 days ago
B
Retailer 8
-
€3,097 EUR
$3,474 USD
View
Retailer 9
-
€3,326 EUR
$3,730 USD
View
Price last confirmed 12 days ago
Retailer 10
-
€3,384 EUR
$3,795 USD
View
Price last confirmed 12 days ago
Retailer 11
-
€3,468 EUR
A$5,983 AUD
View
Price last confirmed 25 days ago
Retailer 12
-
€3,666 EUR
$4,112 USD
View
Price last confirmed 10 days ago
B
Retailer 13
-
€3,894 EUR
£3,439 GBP
View
Retailer 14
-
€3,907 EUR
ZAR 70,793 ZAR
View
Price last confirmed 11 days ago
Retailer 15
-
€5,443 EUR
£4,807 GBP
View
Price last confirmed 12 days ago
Most Expensive
NZ Jewellers
3217f459-345e-46b9-83f9-6e3898b8c971 · Oct 21
€5,640 EUR
$6,326 USD
View
Price last confirmed 12 days ago
15 more retailers have this diamond
Prices start from €3,097 EURSave up to €796 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
€3,097 EUR