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Marquise|Natural|GIA

0.90ct I IF Marquise Natural Diamond

ID • I/IF • GIA 6

Certificate GIA 6

Diamond specifications and retailer prices

From $4,571 AUD
$3,203 USD
As of October 31, 2026
Save $1,173 AUD (20%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $5,743 AUD at Blue Nile · As of October 31, 2026
View at Blue Nile

About this 0.9ct natural marquise diamond

This 0.9ct natural marquise sits in the just-under-one-carat band, graded I colour (near-colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA. Listed at 3 retailers as of October 31, 2026, with prices from $4,571 to $5,743, a $1,173 spread on the same certified stone. Blue Nile lists it at $5,743. Flawless clarity in sub-one-carat stones is rarely visible to the naked eye over VS1, so you are paying a meaningful premium for grade rather than appearance.

The 4Cs

0.90
Carat
I
Colour
IF
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6
Dimensions10.89 × 4.86 × 3.05 mm
L/W Ratio2.24
Top View
10.89 mm4.86 mm0.90 ctI / IF
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6
Side View
Table 61.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 62.8%

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: $5,743 AUD|Low: $4,571 AUD|High: $5,743 AUD|Avg: $4,806 AUD
Blue Nile
Retailer 2
Retailer 3
September 26, 2026
Retailer 3$4,571 AUD
Retailer 2$4,573 AUD
Blue Nile$5,743 AUD

2 data points across 3 retailers

3 retailers$4,571 AUD to $5,743 AUD

B+
Cheapest Retailer
-
$4,571 AUD
$3,203 USD
B+
Retailer 2
-
$4,573 AUD
$3,205 USD
View
Most Expensive
B
Blue Nile
19914506 · Oct 31
$5,743 AUD
$4,025 USD
View
2 more retailers have this diamond
Prices start from $4,571 AUDSave up to $1,173 AUD

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
$4,571 AUD