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Round|Natural|GIA

0.90ct J SI2 Round Natural Diamond

VG • J/SI2 • GIA 1427157820

Certificate GIA 1427157820

Diamond specifications and retailer prices

From $1,312 AUD
HK$7,200 HKD
As of October 30, 2026
Save $3,184 AUD (71%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $4,496 AUD at Moon Ocean · As of October 30, 2026
View at Moon Ocean

About this 0.9ct natural round diamond

This 0.9ct natural round sits in the just-under-one-carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by GIA 1427157820. Listed at 17 retailers as of October 30, 2026, with prices from $1,312 to $4,496, a $3,184 spread on the same certified stone. Moon Ocean lists it at $4,496. 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
J
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle38°
Pavilion angle40.2°
OriginNatural
Grading LabGIA
CertificateGIA 1427157820
Dimensions6.05 × 5.97 × 3.87 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Crystal, Cavity
Top View
6.05 mm5.97 mm0.90 ctJ / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1427157820
Side View
Table 57.0%Crown 38°Girdle: MED-THKPavilion 40.2°Culet: NoneDepth 64.4%

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: Oct 30
Current: $4,496 AUD|Low: $1,179 AUD|High: $4,544 AUD|Avg: $2,226 AUD
Moon Ocean
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 31, 2026
Retailer 7$1,312 AUD
Retailer 5$1,409 AUD
Retailer 6$1,446 AUD
Retailer 8$1,570 AUD
Retailer 3$1,965 AUD
Retailer 2$2,152 AUD
Retailer 4$3,189 AUD
Moon Ocean$4,496 AUD

43 data points across 8 retailers

17 retailers$1,312 AUD to $4,496 AUD

A
Cheapest Retailer
-
$1,312 AUD
HK$7,200 HKD
A
Retailer 2
-
$1,409 AUD
$990 USD
View
B+
Retailer 3
-
$1,446 AUD
$1,016 USD
View
Final sale: no returns
B+
Retailer 4
-
$1,553 AUD
$1,091 USD
View
B+
Retailer 5
-
$1,569 AUD
$1,102 USD
View
B+
Retailer 6
-
$1,569 AUD
$1,102 USD
View
B+
Retailer 7
-
$1,570 AUD
$1,103 USD
View
B+
Retailer 8
-
$1,630 AUD
$1,145 USD
View
B+
Retailer 9
-
$1,811 AUD
$1,272 USD
View
B+
Retailer 10
-
$1,893 AUD
$1,330 USD
View
B+
Retailer 11
-
$1,893 AUD
$1,330 USD
View
B+
Retailer 12
-
$1,950 AUD
$1,370 USD
View
B+
Retailer 13
-
$1,965 AUD
£1,087 GBP
View
B
Retailer 14
-
$2,152 AUD
€1,440 EUR
View
B
Retailer 15
-
$3,189 AUD
£1,764 GBP
View
C
Retailer 16
-
$4,224 AUD
$2,967 USD
View
Most Expensive
B
Moon Ocean
NVN-F4489A766-820 · Oct 30
$4,496 AUD
£2,487 GBP
View
16 more retailers have this diamond
Prices start from $1,312 AUDSave up to $3,184 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
$1,312 AUD