Marquise|Natural|GIA

1.00ct I SI1 Marquise Natural Diamond

EX • I/SI1 • GIA 2564091915

Certificate GIA 2564091915

Diamond specifications and retailer prices

From $2,966 CAD
$2,123 USD
As of October 30, 2026
Save $3,899 CAD (57%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $7,147 CAD at NZ Jewellers · As of September 20, 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 2564091915. Listed at 19 retailers as of October 27, 2026, with a 131% 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
PolishVery Good
SymmetryVery Good
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 2564091915
Dimensions10.08 × 5.30 × 3.07 mm
L/W Ratio1.90
Key to symbols
Twinning Wisp, Indented Natural, Natural
Top View
10.08 mm5.30 mm1.00 ctI / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceStrong
CertificateGIA 2564091915
Side View
Table 60.0%CrownGirdle: STK-THKPavilionCulet: NDepth 58.0%

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 30
Current: $6,864 CAD|Low: $2,834 CAD|High: $7,147 CAD|Avg: $4,019 CAD|-3.9%
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
October 30, 2026
Retailer 15$2,966 CAD
Retailer 3$3,028 CAD
Retailer 7$3,151 CAD
Retailer 11$3,283 CAD
Retailer 12$3,283 CAD
Retailer 14$3,283 CAD
Retailer 5$3,435 CAD
Retailer 2$3,603 CAD
Retailer 13$3,788 CAD
Retailer 4$3,812 CAD
Retailer 8$3,840 CAD
Retailer 9$3,998 CAD
Retailer 6$4,125 CAD
Retailer 10$5,760 CAD
NZ Jewellers$6,864 CAD

41 data points across 15 retailers

19 retailers$2,966 CAD to $6,864 CAD

A
Cheapest Retailer
-
$2,966 CAD
$2,123 USD
A
Retailer 2
-
$3,028 CAD
$2,168 USD
View
Final sale: no returns
A
Retailer 3
-
$3,151 CAD
$2,256 USD
View
A
Retailer 4
-
$3,283 CAD
$2,350 USD
View
B+
Retailer 5
-
$3,283 CAD
$2,350 USD
View
A
Retailer 6
-
$3,283 CAD
$2,350 USD
View
Retailer 7
-
$3,418 CAD
$2,447 USD
View
Price last confirmed 41 days ago
B+
Retailer 8
-
$3,435 CAD
$2,459 USD
View
B+
Retailer 9
-
$3,521 CAD
A$3,878 AUD
View
B+
Retailer 10
-
$3,603 CAD
£2,031 GBP
View
B+
Retailer 11
-
$3,788 CAD
$2,712 USD
View
B+
Retailer 12
-
$3,812 CAD
$2,729 USD
View
B+
Retailer 13
-
$3,840 CAD
€2,618 EUR
View
Retailer 14
-
$3,945 CAD
$2,824 USD
View
Price last confirmed 39 days ago
B+
Retailer 15
-
$3,998 CAD
ZAR 46,236 ZAR
View
Retailer 16
-
$4,125 CAD
A$4,543 AUD
View
Price last confirmed 25 days ago
B
Retailer 17
-
$5,760 CAD
£3,247 GBP
View
B
Retailer 18
-
$6,864 CAD
$4,914 USD
View
Most Expensive
NZ Jewellers
31d49e0b-4810-4c2f-a3ed-6c7ff2302b66 · Sep 20
$7,147 CAD
$5,116 USD
View
Price last confirmed 42 days ago
18 more retailers have this diamond
Prices start from $2,966 CADSave up to $3,899 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.

A
1.00ct Marquise
$2,966 CAD