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Round|Natural|GIA

0.90ct M SI2 Round Natural Diamond

EX • M/SI2 • GIA 6531320919

Certificate GIA 6531320919

Diamond specifications and retailer prices

From $817 AUD
As of November 5, 2026
Save $620 AUD (43%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $3,586 AUD at NZ Jewellers · As of September 28, 2026
View at NZ Jewellers

About this 0.9ct natural round diamond

This 0.9ct natural round sits in the just-under-one-carat band, graded M colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6531320919. Listed at 10 retailers as of November 5, 2026, with a 76% 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

0.90
Carat
M
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceFaint
Crown angle34°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 6531320919
Dimensions6.17 × 6.13 × 3.88 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Feather, Crystal, Cloud, Twinning Wisp
Top View
6.17 mm6.13 mm0.90 ctM / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6531320919
Side View
Table 57.0%Crown 34°Girdle: MED-STKPavilion 41.8°Culet: NoneDepth 63.1%

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: $1,437 AUD|Low: $817 AUD|High: $1,597 AUD|Avg: $1,154 AUD|-2.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 5, 2026
Retailer 2$817 AUD
Retailer 5$823 AUD
Retailer 6$1,090 AUD
Retailer 7$1,133 AUD
Retailer 3$1,261 AUD
Retailer 4$1,299 AUD
Retailer 1$1,437 AUD

45 data points across 7 retailers

10 retailers$817 AUD to $1,437 AUD

A
Cheapest Retailer
-
$817 AUD
A
Retailer 2
-
$823 AUD
View
A
Retailer 3
-
$1,090 AUD
View
Retailer 4
-
$1,133 AUD
View
Price last confirmed 36 days ago
Retailer 5
-
$1,176 AUD
View
Price last confirmed 38 days ago
B+
Retailer 6
-
$1,261 AUD
View
B+
Retailer 7
-
$1,299 AUD
View
Retailer 8
-
$1,307 AUD
View
Price last confirmed 38 days ago
B+
Retailer 9
-
$1,437 AUD
View
Most Expensive
NZ Jewellers
4f23c682-be77-4c26-9618-264522191a6c · Sep 28
$3,586 AUD
$2,510 USD
View
Price last confirmed 39 days ago
9 more retailers have this diamond
Prices start from $817 AUDSave up to $620 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.

A
0.90ct Round
$817 AUD