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Marquise|Natural|GIA

1.00ct G SI1 Marquise Natural Diamond

EX • G/SI1 • GIA 2557316373

Certificate GIA 2557316373

Diamond specifications and retailer prices

From $4,651 NZD
As of November 3, 2026
Save $1,379 NZD (23%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $6,030 NZD at GemTrove · As of November 4, 2026
View at GemTrove

About this 1ct natural marquise diamond

This 1ct natural marquise sits in the classic one-carat band, graded G 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 2557316373. Listed at 8 retailers as of November 3, 2026, with prices from $4,651 to $6,030, a $1,379 spread on the same certified stone. GemTrove lists it at $6,030. 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
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2557316373
Dimensions9.92 × 5.22 × 3.25 mm
L/W Ratio1.90
Culet sizeNone
Key to symbols
Crystal, Feather, Needle
Top View
9.92 mm5.22 mm1.00 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2557316373
Side View
Table 63.0%CrownGirdle: THN-VTKPavilionCulet: NoneDepth 62.3%

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 3
Current: $5,288 NZD|Low: $4,354 NZD|High: $6,155 NZD|Avg: $5,295 NZD|-5.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 4, 2026
Retailer 2$4,651 NZD
Retailer 3$4,989 NZD
Retailer 4$5,041 NZD
Retailer 1$5,288 NZD
Retailer 6$5,711 NZD
Retailer 5$5,919 NZD

46 data points across 6 retailers

8 retailers$4,651 NZD to $6,030 NZD

A
Cheapest Retailer
-
$4,651 NZD
A
Retailer 2
-
$4,989 NZD
View
B+
Retailer 3
-
$5,041 NZD
View
Final sale: no returns
A
Retailer 4
-
$5,288 NZD
View
B+
Retailer 5
-
$5,711 NZD
View
B+
Retailer 6
-
$5,910 NZD
View
B+
Retailer 7
-
$5,919 NZD
View
Most Expensive
B+
GemTrove
GT-N-01273322-98 · Nov 4
$6,030 NZD
A$5,218 AUD
View
7 more retailers have this diamond
Prices start from $4,651 NZDSave up to $1,379 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.

A
1.00ct Marquise
$4,651 NZD