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Marquise|Natural|GIA

1.00ct G SI1 Marquise Natural Diamond

EX • G/SI1 • GIA 1549818428

Certificate GIA 1549818428

Diamond specifications and retailer prices

From $6,063 NZD
As of November 1, 2026
Save $6,659 NZD (52%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $13,253 NZD 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 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 1549818428. Listed at 17 retailers as of November 1, 2026, with a 110% 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
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1549818428
Dimensions10.01 × 5.23 × 3.24 mm
L/W Ratio1.91
Key to symbols
Feather, Cloud, Crystal, Indented Natural, Natural
Top View
10.01 mm5.23 mm1.00 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1549818428
Side View
Table 58.0%CrownGirdle: THK-XTKPavilionCulet: NoneDepth 61.9%

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 1
Current: $7,706 NZD|Low: $6,063 NZD|High: $12,874 NZD|Avg: $8,081 NZD|-0.1%
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
November 4, 2026
Retailer 13$6,063 NZD
Retailer 12$6,474 NZD
Retailer 11$6,587 NZD
Retailer 5$6,892 NZD
Retailer 7$7,420 NZD
Retailer 1$7,706 NZD
Retailer 3$7,788 NZD
Retailer 4$7,788 NZD
Retailer 2$8,037 NZD
Retailer 14$8,163 NZD
Retailer 8$8,606 NZD
Retailer 6$8,607 NZD
Retailer 10$9,351 NZD
Retailer 9$12,722 NZD

21 data points across 14 retailers

17 retailers$6,063 NZD to $12,722 NZD

B+
Cheapest Retailer
-
$6,063 NZD
B+
Retailer 2
-
$6,474 NZD
View
B+
Retailer 3
-
$6,587 NZD
View
Retailer 4
-
$6,892 NZD
View
Price last confirmed 34 days ago
Retailer 5
-
$7,156 NZD
View
Price last confirmed 34 days ago
B+
Retailer 6
-
$7,420 NZD
View
B+
Retailer 7
-
$7,706 NZD
View
B
Retailer 8
-
$7,788 NZD
View
B
Retailer 9
-
$7,788 NZD
View
Retailer 10
-
$7,953 NZD
View
Price last confirmed 36 days ago
B
Retailer 11
-
$8,037 NZD
View
Retailer 12
-
$8,163 NZD
View
Price last confirmed 32 days ago
B
Retailer 13
-
$8,606 NZD
View
Retailer 14
-
$8,607 NZD
View
Price last confirmed 12 days ago
B
Retailer 15
-
$9,351 NZD
View
B
Retailer 16
-
$12,722 NZD
View
Most Expensive
NZ Jewellers
814ae926-9ab3-4cd7-8ec7-86528d4e2e8f · Sep 29
$13,253 NZD
$7,454 USD
View
Price last confirmed 35 days ago
16 more retailers have this diamond
Prices start from $6,063 NZDSave up to $6,659 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
$6,063 NZD