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Marquise|Natural|GIA

1.00ct I SI1 Marquise Natural Diamond

EX • I/SI1 • GIA 2556641575

Certificate GIA 2556641575

Diamond specifications and retailer prices

From $3,054 NZD
As of November 5, 2026
Save $2,432 NZD (44%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $5,891 NZD at Wholesale Diamonds Direct · As of October 27, 2026
View at Wholesale Diamonds Direct

About this 1ct natural marquise diamond

This 1ct natural marquise sits in the classic one-carat band, graded I 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 2556641575. Listed at 13 retailers as of November 1, 2026, with a 80% 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
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.94°
Pavilion angle40.11°
OriginNatural
Grading LabGIA
CertificateGIA 2556641575
Dimensions9.80 × 5.19 × 3.33 mm
L/W Ratio1.89
Culet sizeNone
Top View
9.80 mm5.19 mm1.00 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2556641575
Side View
Table 58.0%Crown 39.94°Girdle: STK-THKPavilion 40.11°Culet: NoneDepth 64.3%

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 5
Current: $3,054 NZD|Low: $3,037 NZD|High: $6,008 NZD|Avg: $4,373 NZD|-3.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Wholesale Diamonds Direct
November 5, 2026
Retailer 1$3,054 NZD
Retailer 9$3,568 NZD
Retailer 8$3,599 NZD
Retailer 7$3,631 NZD
Retailer 3$3,917 NZD
Retailer 5$3,938 NZD
Retailer 11$4,275 NZD
Retailer 6$4,515 NZD
Retailer 2$4,552 NZD
Retailer 4$5,068 NZD
Retailer 10$5,486 NZD
Wholesale Diamonds Direct$5,891 NZD

38 data points across 12 retailers

13 retailers$3,054 NZD to $5,486 NZD

A
Cheapest Retailer
-
$3,054 NZD
A
Retailer 2
-
$3,568 NZD
View
A
Retailer 3
-
$3,599 NZD
View
A
Retailer 4
-
$3,631 NZD
View
A
Retailer 5
-
$3,917 NZD
View
A
Retailer 6
-
$3,938 NZD
View
A
Retailer 7
-
$4,275 NZD
View
A
Retailer 8
-
$4,515 NZD
View
B+
Retailer 9
-
$4,520 NZD
View
B+
Retailer 10
-
$4,552 NZD
View
B+
Retailer 11
-
$5,068 NZD
View
B+
Retailer 12
-
$5,486 NZD
View
Most Expensive
Wholesale Diamonds Direct
610445789 · Oct 27
$5,891 NZD
$3,312 USD
View
Price last confirmed 9 days ago
12 more retailers have this diamond
Prices start from $3,054 NZDSave up to $2,432 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
$3,054 NZD