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Marquise|Natural|GIA

0.90ct D SI1 Marquise Natural Diamond

GD • D/SI1 • GIA 2566609346

Certificate GIA 2566609346

Diamond specifications and retailer prices

From $4,218 NZD
SGD 3,207 SGD
As of October 31, 2026
Save $3,657 NZD (46%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $7,875 NZD at Helzberg Diamonds · As of November 2, 2026
View at Helzberg Diamonds

About this 0.9ct natural marquise diamond

This 0.9ct natural marquise sits in the just-under-one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 2566609346. Listed at 13 retailers as of October 31, 2026, with prices from $4,218 to $7,875, a $3,657 spread on the same certified stone. Helzberg Diamonds lists it at $7,875. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.90
Carat
D
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryExcellent
FluorescenceFaint
Crown angle39.22°
Pavilion angle40.2°
OriginNatural
Grading LabGIA
CertificateGIA 2566609346
Dimensions9.00 × 4.94 × 3.26 mm
L/W Ratio1.82
Culet sizeNone
Top View
9.00 mm4.94 mm0.90 ctD / SI1
OriginNatural
CutGood
PolishVery Good
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2566609346
Side View
Table 59.0%Crown 39.22°Girdle: STK-VTKPavilion 40.2°Culet: NoneDepth 66.1%

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: Oct 31
Current: $7,875 NZD|Low: $4,502 NZD|High: $7,875 NZD|Avg: $5,588 NZD
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 12$4,502 NZD
Retailer 10$4,514 NZD
Retailer 9$4,548 NZD
Retailer 11$4,581 NZD
Retailer 5$4,906 NZD
Retailer 4$4,987 NZD
Retailer 6$5,373 NZD
Retailer 3$5,577 NZD
Retailer 2$5,901 NZD
Retailer 8$6,983 NZD
Retailer 7$7,418 NZD
Helzberg Diamonds$7,875 NZD

18 data points across 12 retailers

13 retailers$4,218 NZD to $7,875 NZD

B+
Cheapest Retailer
-
$4,218 NZD
SGD 3,207 SGD
B+
Retailer 2
-
$4,502 NZD
$2,533 USD
View
B+
Retailer 3
-
$4,514 NZD
$2,540 USD
View
B+
Retailer 4
-
$4,548 NZD
$2,559 USD
View
B+
Retailer 5
-
$4,581 NZD
$2,578 USD
View
B+
Retailer 6
-
$4,906 NZD
£2,174 GBP
View
B
Retailer 7
-
$4,987 NZD
SGD 3,792 SGD
View
B
Retailer 8
-
$5,373 NZD
$3,023 USD
View
B
Retailer 9
-
$5,577 NZD
$3,138 USD
View
B
Retailer 10
-
$5,901 NZD
€3,162 EUR
View
B
Retailer 11
-
$6,983 NZD
$3,929 USD
View
B
Retailer 12
-
$7,418 NZD
$4,174 USD
View
Most Expensive
C
Helzberg Diamonds
XZRILMMMGPJKM · Nov 2
$7,875 NZD
$4,431 USD
View
12 more retailers have this diamond
Prices start from $4,218 NZDSave up to $3,657 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+
0.90ct Marquise
$4,218 NZD