Marquise|Natural|GIA

1.00ct I SI1 Marquise Natural Diamond

EX • I/SI1 • GIA 1558052400

Certificate GIA 1558052400

Diamond specifications and retailer prices

From $5,495 NZD
As of November 5, 2026
Save $5,758 NZD (51%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $11,253 NZD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

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 1558052400. Listed at 17 retailers as of November 5, 2026, with prices from $5,495 to $11,253, a $5,758 spread on the same certified stone. NZ Jewellers lists it at $11,253. 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
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1558052400
Dimensions9.99 × 5.30 × 3.09 mm
L/W Ratio1.88
Culet sizeNone
Top View
9.99 mm5.30 mm1.00 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1558052400
Side View
Table 62.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 58.2%

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 5
Current: $11,253 NZD|Low: $5,194 NZD|High: $11,253 NZD|Avg: $6,859 NZD
NZ Jewellers
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
Retailer 15
Retailer 16
Retailer 17
November 5, 2026
Retailer 17$5,194 NZD
Retailer 3$5,324 NZD
Retailer 10$5,495 NZD
Retailer 5$5,666 NZD
Retailer 7$5,851 NZD
Retailer 16$5,851 NZD
Retailer 15$6,077 NZD
Retailer 2$6,260 NZD
Retailer 4$6,635 NZD
Retailer 8$6,751 NZD
Retailer 6$6,918 NZD
Retailer 9$7,315 NZD
Retailer 13$7,505 NZD
Retailer 11$7,692 NZD
Retailer 12$7,795 NZD
Retailer 14$10,858 NZD
NZ Jewellers$11,253 NZD

35 data points across 17 retailers

17 retailers$5,495 NZD to $11,253 NZD

Retailer 1
-
$5,194 NZD
Price last confirmed 13 days ago
Retailer 2
-
$5,324 NZD
View
Price last confirmed 15 days ago
B+
Retailer 3
-
$5,495 NZD
View
Retailer 4
-
$5,666 NZD
View
Price last confirmed 13 days ago
Retailer 5
-
$5,851 NZD
View
Price last confirmed 20 days ago
B+
Retailer 6
-
$5,851 NZD
View
Retailer 7
-
$5,877 NZD
View
Price last confirmed 18 days ago
Retailer 8
-
$6,077 NZD
View
Price last confirmed 20 days ago
B+
Retailer 9
-
$6,260 NZD
View
Retailer 10
-
$6,635 NZD
View
Price last confirmed 15 days ago
Retailer 11
-
$6,751 NZD
View
Price last confirmed 15 days ago
Retailer 12
-
$6,918 NZD
View
Price last confirmed 28 days ago
Retailer 13
-
$7,315 NZD
View
Price last confirmed 13 days ago
B
Retailer 14
-
$7,692 NZD
View
Retailer 15
-
$7,795 NZD
View
Price last confirmed 14 days ago
Retailer 16
-
$10,858 NZD
View
Price last confirmed 15 days ago
Most Expensive
B
NZ Jewellers
3217f459-345e-46b9-83f9-6e3898b8c971 · Nov 5
$11,253 NZD
$6,326 USD
View
16 more retailers have this diamond
Prices start from $5,495 NZDSave up to $5,758 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
$5,495 NZD