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Marquise|Natural|GIA

1.00ct G SI1 Marquise Natural Diamond

EX • G/SI1 • GIA 1558855136

Certificate GIA 1558855136

Diamond specifications and retailer prices

From $5,069 NZD
As of November 6, 2026
Save $1,576 NZD (24%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $6,645 NZD at Michael Trio · As of November 6, 2026
View at Michael Trio

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 1558855136. Listed at 6 retailers as of November 6, 2026, with prices from $5,069 to $6,645, a $1,576 spread on the same certified stone. Michael Trio lists it at $6,645. 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 1558855136
Dimensions9.93 × 5.17 × 3.29 mm
L/W Ratio1.92
Culet sizeNone
Key to symbols
Cloud, Crystal, Feather, Needle, Knot, Indented Natural
Top View
9.93 mm5.17 mm1.00 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1558855136
Side View
Table 64.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 63.6%

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: $6,645 NZD|Low: $5,069 NZD|High: $6,780 NZD|Avg: $6,072 NZD|-2.0%
Michael Trio
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 6, 2026
Retailer 2$5,069 NZD
Retailer 4$5,767 NZD
Retailer 3$6,160 NZD
Retailer 5$6,563 NZD
Michael Trio$6,645 NZD

45 data points across 5 retailers

6 retailers$5,069 NZD to $6,645 NZD

A
Cheapest Retailer
-
$5,069 NZD
B+
Retailer 2
-
$5,767 NZD
View
B+
Retailer 3
-
$6,160 NZD
View
B+
Retailer 4
-
$6,472 NZD
View
B
Retailer 5
-
$6,563 NZD
View
Most Expensive
B
Michael Trio
2491329060 · Nov 6
$6,645 NZD
SGD 4,978 SGD
View
5 more retailers have this diamond
Prices start from $5,069 NZDSave up to $1,576 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
$5,069 NZD