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Marquise|Natural|GIA

1.00ct I SI1 Marquise Natural Diamond

EX • I/SI1 • GIA 2556641575

Certificate GIA 2556641575

Diamond specifications and retailer prices

From €1,523 EUR
SGD 2,308 SGD
As of October 31, 2026
Save €1,430 EUR (48%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: €2,953 EUR at Wholesale Diamonds Direct · As of October 27, 2026
View at Wholesale Diamonds Direct

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 2556641575. Listed at 13 retailers as of October 27, 2026, with prices from €1,523 to €2,953, a €1,430 spread on the same certified stone. Wholesale Diamonds Direct lists it at €2,953. 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
SymmetryExcellent
FluorescenceNone
Crown angle39.94°
Pavilion angle40.11°
OriginNatural
Grading LabGIA
CertificateGIA 2556641575
Dimensions9.80 × 5.19 × 3.33 mm
L/W Ratio1.89
Culet sizeNone
Top View
9.80 mm5.19 mm1.00 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2556641575
Side View
Table 58.0%Crown 39.94°Girdle: STK-THKPavilion 40.11°Culet: NoneDepth 64.3%

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: €2,541 EUR|Low: €1,523 EUR|High: €3,011 EUR|Avg: €2,197 EUR|+7.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Wholesale Diamonds Direct
November 2, 2026
Retailer 10€1,523 EUR
Retailer 8€1,789 EUR
Retailer 7€1,804 EUR
Retailer 6€1,820 EUR
Retailer 3€1,963 EUR
Retailer 4€1,974 EUR
Retailer 11€2,142 EUR
Retailer 5€2,263 EUR
Retailer 2€2,282 EUR
Retailer 1€2,541 EUR
Retailer 9€2,750 EUR
Wholesale Diamonds Direct€2,953 EUR

37 data points across 12 retailers

13 retailers€1,523 EUR to €2,953 EUR

A
Cheapest Retailer
-
€1,523 EUR
SGD 2,308 SGD
A
Retailer 2
-
€1,789 EUR
$2,006 USD
View
A
Retailer 3
-
€1,804 EUR
$2,023 USD
View
A
Retailer 4
-
€1,820 EUR
$2,041 USD
View
A
Retailer 5
-
€1,963 EUR
SGD 2,976 SGD
View
A
Retailer 6
-
€1,974 EUR
£1,744 GBP
View
A
Retailer 7
-
€2,142 EUR
$2,403 USD
View
A
Retailer 8
-
€2,263 EUR
$2,538 USD
View
B+
Retailer 9
-
€2,266 EUR
$2,541 USD
View
B+
Retailer 10
-
€2,282 EUR
$2,560 USD
View
B+
Retailer 11
-
€2,541 EUR
View
B+
Retailer 12
-
€2,750 EUR
$3,084 USD
View
Most Expensive
B
Wholesale Diamonds Direct
610445789 · Oct 27
€2,953 EUR
$3,312 USD
View
12 more retailers have this diamond
Prices start from €1,523 EURSave up to €1,430 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 Marquise
€1,523 EUR