Marquise|Natural|GIA

1.00ct E SI1 Marquise Natural Diamond

EX • E/SI1 • GIA 1555023523

Certificate GIA 1555023523

Diamond specifications and retailer prices

From $2,816 USD
As of November 4, 2026
Save $3,344 USD (54%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $6,886 USD at NZ Jewellers · As of September 29, 2026
View at NZ Jewellers

About this 1ct natural marquise diamond

This 1ct natural marquise sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1555023523. Listed at 25 retailers as of November 4, 2026, with a 119% 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
E
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1555023523
Dimensions9.87 × 5.19 × 3.24 mm
L/W Ratio1.90
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Crystal, Cloud, Cavity, Needle, Indented Natural, Natural
Top View
9.87 mm5.19 mm1.00 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1555023523
Side View
Table 62.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 62.4%

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: Nov 4
Current: $3,583 USD|Low: $2,816 USD|High: $6,244 USD|Avg: $4,122 USD|-1.8%
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
November 6, 2026
Retailer 13$2,816 USD
Retailer 8$2,927 USD
Retailer 9$3,297 USD
Retailer 5$3,341 USD
Retailer 2$3,440 USD
Retailer 1$3,583 USD
Retailer 4$3,694 USD
Retailer 6$3,800 USD
Retailer 12$3,836 USD
Retailer 11$4,307 USD
Retailer 7$4,509 USD
Retailer 3$5,721 USD
Retailer 10$6,160 USD

24 data points across 13 retailers

25 retailers$2,816 USD to $6,160 USD

A
Cheapest Retailer
-
$2,816 USD
A
Retailer 2
-
$2,927 USD
View
A
Retailer 3
-
$3,297 USD
View
A
Retailer 4
-
$3,332 USD
View
A
Retailer 5
-
$3,341 USD
View
A
Retailer 6
-
$3,409 USD
View
Final sale: no returns
A
Retailer 7
-
$3,440 USD
View
B+
Retailer 8
-
$3,440 USD
View
B+
Retailer 9
-
$3,549 USD
View
A
Retailer 10
-
$3,583 USD
View
Retailer 11
-
$3,694 USD
View
Price last confirmed 8 days ago
Retailer 12
-
$3,694 USD
View
Price last confirmed 21 days ago
B+
Retailer 13
-
$3,800 USD
View
B+
Retailer 14
-
$3,836 USD
View
B+
Retailer 15
-
$3,839 USD
View
B+
Retailer 16
-
$3,840 USD
View
B+
Retailer 17
-
$3,890 USD
View
Retailer 18
-
$3,953 USD
View
Price last confirmed 38 days ago
Retailer 19
-
$4,014 USD
View
Price last confirmed 29 days ago
B+
Retailer 20
-
$4,307 USD
View
B+
Retailer 21
-
$4,509 USD
View
Retailer 22
-
$4,561 USD
View
Price last confirmed 38 days ago
Retailer 23
-
$5,721 USD
View
Price last confirmed 9 days ago
B
Retailer 24
-
$6,160 USD
View
Most Expensive
NZ Jewellers
59feb36f-121a-4f76-9f73-37702296f960 · Sep 29
$6,886 USD
View
Price last confirmed 37 days ago
24 more retailers have this diamond
Prices start from $2,816 USDSave up to $3,344 USD

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
$2,816 USD