CaratHunter
Plans
Marquise|Natural|GIA

1.00ct E SI2 Marquise Natural Diamond

EX • E/SI2 • GIA 3555958830

Certificate GIA 3555958830

Diamond specifications and retailer prices

From €1,825 EUR
SGD 2,755 SGD
As of October 31, 2026
Save €1,725 EUR (49%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: €3,550 EUR at Helzberg Diamonds · As of October 31, 2026
View at Helzberg Diamonds

About this 1ct natural marquise diamond

This 1ct natural marquise sits in the classic one-carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 3555958830. Listed at 13 retailers as of October 31, 2026, with prices from €1,825 to €3,550, a €1,725 spread on the same certified stone. Helzberg Diamonds lists it at €3,550. 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
E
Color
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle40°
Pavilion angle40.33°
OriginNatural
Grading LabGIA
CertificateGIA 3555958830
Dimensions9.82 × 5.18 × 3.32 mm
L/W Ratio1.90
Culet sizeNone
Top View
9.82 mm5.18 mm1.00 ctE / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 3555958830
Side View
Table 59.0%Crown 40°Girdle: STK-THKPavilion 40.33°Culet: NoneDepth 64.0%

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: €3,550 EUR|Low: €1,825 EUR|High: €3,700 EUR|Avg: €2,407 EUR|-4.1%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 31, 2026
Retailer 10€1,825 EUR
Retailer 9€1,965 EUR
Retailer 11€1,982 EUR
Retailer 7€2,001 EUR
Retailer 8€2,033 EUR
Retailer 2€2,143 EUR
Retailer 5€2,157 EUR
Retailer 12€2,342 EUR
Retailer 3€2,345 EUR
Retailer 4€2,469 EUR
Retailer 6€2,551 EUR
Retailer 13€3,252 EUR
Helzberg Diamonds€3,550 EUR

38 data points across 13 retailers

13 retailers€1,825 EUR to €3,550 EUR

A
Cheapest Retailer
-
€1,825 EUR
SGD 2,755 SGD
A
Retailer 2
-
€1,965 EUR
$2,195 USD
View
A
Retailer 3
-
€1,982 EUR
$2,214 USD
View
A
Retailer 4
-
€2,001 EUR
$2,235 USD
View
A
Retailer 5
-
€2,033 EUR
$2,271 USD
View
A
Retailer 6
-
€2,143 EUR
£1,885 GBP
View
A
Retailer 7
-
€2,157 EUR
SGD 3,257 SGD
View
A
Retailer 8
-
€2,342 EUR
$2,617 USD
View
A
Retailer 9
-
€2,345 EUR
$2,620 USD
View
A
Retailer 10
-
€2,469 EUR
$2,759 USD
View
A
Retailer 11
-
€2,551 EUR
View
B+
Retailer 12
-
€3,252 EUR
$3,633 USD
View
Most Expensive
B+
Helzberg Diamonds
XZRJLLLPLOOJG · Oct 31
€3,550 EUR
$3,966 USD
View
12 more retailers have this diamond
Prices start from €1,825 EURSave up to €1,725 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
€1,825 EUR