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Marquise|Natural|GIA

1.00ct E SI1 Marquise Natural Diamond

EX • E/SI1 • GIA 6551185021

Certificate GIA 6551185021

Diamond specifications and retailer prices

From $3,831 USD
As of November 5, 2026
Save $4,711 USD (55%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $8,542 USD at NZ Jewellers · As of November 5, 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 6551185021. Listed at 21 retailers as of November 5, 2026, with prices from $3,831 to $8,542, a $4,711 spread on the same certified stone. NZ Jewellers lists it at $8,542. 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
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6551185021
Dimensions10.31 × 5.06 × 3.18 mm
L/W Ratio2.04
Girdle conditionFaceted
Culet sizeNone
Top View
10.31 mm5.06 mm1.00 ctE / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6551185021
Side View
Table 56.0%CrownGirdle: VTK-ETKPavilionCulet: NoneDepth 62.8%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $8,542 USD|Low: $3,909 USD|High: $8,542 USD|Avg: $5,333 USD
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
November 6, 2026
Retailer 9$3,909 USD
Retailer 12$4,172 USD
Retailer 4$4,193 USD
Retailer 11$4,210 USD
Retailer 3$4,442 USD
Retailer 13$4,442 USD
Retailer 2$4,798 USD
Retailer 5$4,838 USD
Retailer 10$4,942 USD
Retailer 8$5,525 USD
Retailer 6$5,982 USD
Retailer 7$7,787 USD
NZ Jewellers$8,542 USD

46 data points across 13 retailers

21 retailers$3,831 USD to $8,542 USD

B+
Cheapest Retailer
-
$3,831 USD
B+
Retailer 2
-
$3,909 USD
View
B+
Retailer 3
-
$4,054 USD
View
B+
Retailer 4
-
$4,172 USD
View
B+
Retailer 5
-
$4,193 USD
View
B+
Retailer 6
-
$4,210 USD
View
Retailer 7
-
$4,442 USD
View
Price last confirmed 8 days ago
B
Retailer 8
-
$4,442 USD
View
B
Retailer 9
-
$4,442 USD
View
B+
Retailer 10
-
$4,798 USD
View
B
Retailer 11
-
$4,838 USD
View
Retailer 12
-
$4,942 USD
View
Price last confirmed 28 days ago
B
Retailer 13
-
$4,990 USD
View
B
Retailer 14
-
$4,990 USD
View
B
Retailer 15
-
$5,125 USD
View
B
Retailer 16
-
$5,160 USD
View
Retailer 17
-
$5,414 USD
View
Price last confirmed 14 days ago
B
Retailer 18
-
$5,525 USD
View
B
Retailer 19
-
$5,982 USD
View
B
Retailer 20
-
$7,787 USD
View
Most Expensive
B
NZ Jewellers
f3e8fe6d-4665-4962-b68a-9e5acc960959 · Nov 5
$8,542 USD
View
20 more retailers have this diamond
Prices start from $3,831 USDSave up to $4,711 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.

B+
1.00ct Marquise
$3,831 USD