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Marquise|Natural|GIA

1.00ct J SI1 Marquise Natural Diamond

EX • J/SI1 • GIA 6555512678

Certificate GIA 6555512678

Diamond specifications and retailer prices

From $3,752 NZD
As of November 6, 2026
Save $5,448 NZD (59%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $9,200 NZD 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 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 6555512678. Listed at 18 retailers as of November 5, 2026, with prices from $3,752 to $9,200, a $5,448 spread on the same certified stone. NZ Jewellers lists it at $9,200. 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
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37°
OriginNatural
Grading LabGIA
CertificateGIA 6555512678
Dimensions9.77 × 5.25 × 3.39 mm
L/W Ratio1.86
Culet sizeNone
Key to symbols
Feather, Crystal, Pinpoint, Knot
Top View
9.77 mm5.25 mm1.00 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6555512678
Side View
Table 61.0%Crown 37°Girdle: STK-VTKPavilionCulet: NDepth 64.6%

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 6
Current: $9,200 NZD|Low: $3,752 NZD|High: $9,366 NZD|Avg: $5,071 NZD|-1.8%
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 6, 2026
Retailer 9$3,752 NZD
Retailer 4$3,976 NZD
Retailer 5$4,061 NZD
Retailer 2$4,268 NZD
Retailer 14$4,374 NZD
Retailer 7$4,402 NZD
Retailer 17$4,402 NZD
Retailer 6$4,604 NZD
Retailer 3$4,652 NZD
Retailer 11$4,656 NZD
Retailer 16$4,773 NZD
Retailer 8$4,780 NZD
Retailer 15$5,078 NZD
Retailer 10$5,370 NZD
Retailer 13$5,471 NZD
Retailer 12$7,688 NZD
NZ Jewellers$9,200 NZD

27 data points across 17 retailers

18 retailers$3,752 NZD to $9,200 NZD

B+
Cheapest Retailer
-
$3,752 NZD
B+
Retailer 2
-
$3,976 NZD
View
B+
Retailer 3
-
$4,061 NZD
View
Final sale: no returns
B+
Retailer 4
-
$4,268 NZD
View
B+
Retailer 5
-
$4,374 NZD
View
B+
Retailer 6
-
$4,402 NZD
View
Retailer 7
-
$4,402 NZD
View
Price last confirmed 9 days ago
B+
Retailer 8
-
$4,604 NZD
View
B+
Retailer 9
-
$4,652 NZD
View
B+
Retailer 10
-
$4,656 NZD
View
B
Retailer 11
-
$4,773 NZD
View
B
Retailer 12
-
$4,780 NZD
View
B+
Retailer 13
-
$5,078 NZD
View
B
Retailer 14
-
$5,370 NZD
View
B
Retailer 15
-
$5,471 NZD
View
Retailer 16
-
$5,727 NZD
View
Price last confirmed 31 days ago
B
Retailer 17
-
$7,688 NZD
View
Most Expensive
B
NZ Jewellers
71be0534-a66f-4f59-9929-7973de153c9d · Nov 5
$9,200 NZD
$5,100 USD
View
17 more retailers have this diamond
Prices start from $3,752 NZDSave up to $5,448 NZD

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
$3,752 NZD