Marquise|Natural|GIA

1.00ct J SI1 Marquise Natural Diamond

EX • J/SI1 • GIA 5553457339

Certificate GIA 5553457339

Diamond specifications and retailer prices

From $1,879 USD
As of November 6, 2026
Save $2,318 USD (55%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $4,598 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 J 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 5553457339. Listed at 21 retailers as of November 2, 2026, with a 123% 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
J
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5553457339
Dimensions10.58 × 5.04 × 3.13 mm
L/W Ratio2.10
Girdle conditionThick to Very Thick
Key to symbols
Feather, Pinpoint, Needle, Indented Natural
Top View
10.58 mm5.04 mm1.00 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5553457339
Side View
Table 63.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 62.0%

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: Nov 6
Current: $1,879 USD|Low: $1,638 USD|High: $4,197 USD|Avg: $2,404 USD
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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
Retailer 23
November 6, 2026
Retailer 15$1,638 USD
Retailer 11$1,700 USD
Retailer 1$1,879 USD
Retailer 7$1,960 USD
Retailer 4$2,003 USD
Retailer 20$2,039 USD
Retailer 14$2,041 USD
Retailer 2$2,043 USD
Retailer 12$2,116 USD
Retailer 3$2,190 USD
Retailer 8$2,225 USD
Retailer 16$2,294 USD
Retailer 13$2,301 USD
Retailer 22$2,349 USD
Retailer 9$2,446 USD
Retailer 5$2,510 USD
Retailer 6$2,510 USD
Retailer 19$2,534 USD
Retailer 10$2,590 USD
Retailer 17$2,789 USD
Retailer 18$2,924 USD
Retailer 21$3,445 USD
Retailer 23$4,197 USD

33 data points across 23 retailers

21 retailers$1,879 USD to $4,197 USD

Retailer 1
-
$1,638 USD
Price last confirmed 20 days ago
A
Retailer 2
-
$1,879 USD
View
B+
Retailer 3
-
$1,960 USD
View
B+
Retailer 4
-
$2,003 USD
View
Final sale: no returns
B+
Retailer 5
-
$2,039 USD
View
B+
Retailer 6
-
$2,043 USD
View
B+
Retailer 7
-
$2,116 USD
View
B+
Retailer 8
-
$2,190 USD
View
Retailer 9
-
$2,199 USD
View
Price last confirmed 29 days ago
B+
Retailer 10
-
$2,225 USD
View
B+
Retailer 11
-
$2,349 USD
View
B+
Retailer 12
-
$2,446 USD
View
B+
Retailer 13
-
$2,510 USD
View
B+
Retailer 14
-
$2,510 USD
View
B+
Retailer 15
-
$2,534 USD
View
B
Retailer 16
-
$2,590 USD
View
B
Retailer 17
-
$2,789 USD
View
B
Retailer 18
-
$2,924 USD
View
B
Retailer 19
-
$3,445 USD
View
B
Retailer 20
-
$4,197 USD
View
Most Expensive
NZ Jewellers
d5056980-58bb-42a3-a1f3-9b25bfcf425e · Sep 29
$4,598 USD
View
Price last confirmed 38 days ago
20 more retailers have this diamond
Prices start from $1,879 USDSave up to $2,318 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
$1,879 USD