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Marquise|Natural|GIA

0.90ct H SI2 Marquise Natural Diamond

EX • H/SI2 • GIA 2557985642

Certificate GIA 2557985642

Diamond specifications and retailer prices

From $3,439 NZD
$1,935 USD
As of October 30, 2026
Save $2,796 NZD (45%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $6,235 NZD at Riddles Jewelry · As of November 2, 2026
View at Riddles Jewelry

About this 0.9ct natural marquise diamond

This 0.9ct natural marquise sits in the just-under-one-carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2557985642. Listed at 9 retailers as of October 30, 2026, with prices from $3,439 to $6,235, a $2,796 spread on the same certified stone. Riddles Jewelry lists it at $6,235. 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

0.90
Carat
H
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2557985642
Dimensions9.63 × 5.07 × 3.14 mm
L/W Ratio1.90
Culet sizeNone
Key to symbols
Crystal, Feather, Knot
Top View
9.63 mm5.07 mm0.90 ctH / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 2557985642
Side View
Table 64.0%CrownGirdle: STK-VTKPavilionCulet: 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: Oct 30
Current: $6,143 NZD|Low: $3,439 NZD|High: $6,235 NZD|Avg: $4,275 NZD|+0.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Riddles Jewelry
November 2, 2026
Retailer 7$3,439 NZD
Retailer 8$4,107 NZD
Retailer 3$4,260 NZD
Retailer 6$4,301 NZD
Retailer 5$4,511 NZD
Retailer 2$5,565 NZD
Retailer 4$6,094 NZD
Retailer 1$6,143 NZD
Riddles Jewelry$6,235 NZD

32 data points across 9 retailers

9 retailers$3,439 NZD to $6,235 NZD

B+
Cheapest Retailer
-
$3,439 NZD
$1,935 USD
B+
Retailer 2
-
$4,107 NZD
SGD 3,123 SGD
View
B
Retailer 3
-
$4,260 NZD
$2,397 USD
View
B+
Retailer 4
-
$4,301 NZD
$2,420 USD
View
B
Retailer 5
-
$4,511 NZD
$2,538 USD
View
B
Retailer 6
-
$5,485 NZD
$3,086 USD
View
B
Retailer 7
-
$5,565 NZD
£2,466 GBP
View
B
Retailer 8
-
$6,143 NZD
€3,292 EUR
View
Most Expensive
B
Riddles Jewelry
1997151045 · Nov 2
$6,235 NZD
$3,508 USD
View
8 more retailers have this diamond
Prices start from $3,439 NZDSave up to $2,796 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
$3,439 NZD