Marquise|Natural|GIA

1.00ct I SI1 Marquise Natural Diamond

EX • I/SI1 • GIA 1558052400

Certificate GIA 1558052400

Diamond specifications and retailer prices

From $4,853 CAD
$3,474 USD
As of November 1, 2026
Save $1,248 CAD (20%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $8,837 CAD 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 17 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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $8,837 CAD|Low: $4,079 CAD|High: $8,837 CAD|Avg: $5,400 CAD
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$4,079 CAD
Retailer 3$4,181 CAD
Retailer 5$4,449 CAD
Retailer 7$4,594 CAD
Retailer 16$4,594 CAD
Retailer 15$4,772 CAD
Retailer 10$4,853 CAD
Retailer 12$4,946 CAD
Retailer 4$5,210 CAD
Retailer 8$5,301 CAD
Retailer 6$5,433 CAD
Retailer 9$5,744 CAD
Retailer 13$5,895 CAD
Retailer 2$6,100 CAD
Retailer 11$6,121 CAD
Retailer 14$8,528 CAD
NZ Jewellers$8,837 CAD

35 data points across 17 retailers

17 retailers$4,853 CAD to $6,100 CAD

Retailer 1
-
$4,079 CAD
$2,920 USD
Price last confirmed 9 days ago
Retailer 2
-
$4,181 CAD
$2,993 USD
View
Price last confirmed 11 days ago
Retailer 3
-
$4,449 CAD
$3,185 USD
View
Price last confirmed 10 days ago
Retailer 4
-
$4,594 CAD
$3,289 USD
View
Price last confirmed 17 days ago
Retailer 5
-
$4,594 CAD
$3,289 USD
View
Price last confirmed 10 days ago
Retailer 6
-
$4,616 CAD
$3,304 USD
View
Price last confirmed 15 days ago
Retailer 7
-
$4,772 CAD
$3,416 USD
View
Price last confirmed 16 days ago
B
Retailer 8
-
$4,853 CAD
$3,474 USD
View
Retailer 9
-
$4,946 CAD
£2,788 GBP
View
Price last confirmed 11 days ago
Retailer 10
-
$5,210 CAD
$3,730 USD
View
Price last confirmed 12 days ago
Retailer 11
-
$5,301 CAD
$3,795 USD
View
Price last confirmed 12 days ago
Retailer 12
-
$5,433 CAD
A$5,983 AUD
View
Price last confirmed 24 days ago
Retailer 13
-
$5,744 CAD
$4,112 USD
View
Price last confirmed 10 days ago
B
Retailer 14
-
$6,100 CAD
£3,439 GBP
View
Retailer 15
-
$6,121 CAD
ZAR 70,793 ZAR
View
Price last confirmed 11 days ago
Retailer 16
-
$8,528 CAD
£4,807 GBP
View
Price last confirmed 12 days ago
Most Expensive
NZ Jewellers
3217f459-345e-46b9-83f9-6e3898b8c971 · Oct 21
$8,837 CAD
$6,326 USD
View
Price last confirmed 12 days ago
16 more retailers have this diamond
Prices start from $4,853 CADSave up to $1,248 CAD

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
$4,853 CAD