CaratHunter
Plans
Marquise|Natural|GIA

1.00ct H SI1 Marquise Natural Diamond

EX • H/SI1 • GIA 6555978887

Certificate GIA 6555978887

Diamond specifications and retailer prices

From $4,050 NZD
As of November 1, 2026
Save $5,151 NZD (56%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $11,241 NZD at NZ Jewellers · As of October 17, 2026
View at NZ Jewellers

About this 1ct natural marquise diamond

This 1ct natural marquise sits in the classic one-carat band, graded H 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 6555978887. Listed at 20 retailers as of October 28, 2026, with a 127% 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
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6555978887
Dimensions9.79 × 5.29 × 3.29 mm
L/W Ratio1.85
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Crystal, Feather, Needle, Natural
Top View
9.79 mm5.29 mm1.00 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6555978887
Side View
Table 60.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 62.2%

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 1
Current: $4,735 NZD|Low: $4,004 NZD|High: $9,235 NZD|Avg: $5,938 NZD|-0.2%
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
November 3, 2026
Retailer 10$4,050 NZD
Retailer 7$4,237 NZD
Retailer 1$4,735 NZD
Retailer 2$4,806 NZD
Retailer 3$4,962 NZD
Retailer 4$5,629 NZD
Retailer 5$5,631 NZD
Retailer 6$5,700 NZD
Retailer 13$6,191 NZD
Retailer 11$6,292 NZD
Retailer 9$6,609 NZD
Retailer 8$8,991 NZD
Retailer 12$9,201 NZD

27 data points across 13 retailers

20 retailers$4,050 NZD to $9,201 NZD

A
Cheapest Retailer
-
$4,050 NZD
A
Retailer 2
-
$4,237 NZD
View
A
Retailer 3
-
$4,735 NZD
View
B+
Retailer 4
-
$4,806 NZD
View
B+
Retailer 5
-
$4,962 NZD
View
Final sale: no returns
B+
Retailer 6
-
$5,034 NZD
View
B+
Retailer 7
-
$5,041 NZD
View
Retailer 8
-
$5,377 NZD
View
Price last confirmed 19 days ago
Retailer 9
-
$5,377 NZD
View
Price last confirmed 17 days ago
Retailer 10
-
$5,583 NZD
View
Price last confirmed 19 days ago
B+
Retailer 11
-
$5,629 NZD
View
Retailer 12
-
$5,631 NZD
View
Price last confirmed 8 days ago
B+
Retailer 13
-
$5,700 NZD
View
Retailer 14
-
$5,768 NZD
View
Price last confirmed 28 days ago
Retailer 15
-
$6,203 NZD
View
Price last confirmed 16 days ago
B
Retailer 16
-
$6,292 NZD
View
B+
Retailer 17
-
$6,609 NZD
View
B
Retailer 18
-
$8,991 NZD
View
B
Retailer 19
-
$9,201 NZD
View
Most Expensive
NZ Jewellers
6cdd9434-35a4-44a2-ba4e-55c626e8c816 · Oct 17
$11,241 NZD
$6,322 USD
View
Price last confirmed 17 days ago
19 more retailers have this diamond
Prices start from $4,050 NZDSave up to $5,151 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
$4,050 NZD