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Oval|Natural|GIA

1.21ct G SI2 Oval Natural Diamond

EX • G/SI2 • GIA 2557610799

Certificate GIA 2557610799

Diamond specifications and retailer prices

From $3,283 AUD
As of November 5, 2026
Save $2,749 AUD (46%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $6,033 AUD at Helzberg Diamonds · As of November 6, 2026
View at Helzberg Diamonds

About this 1.21ct natural oval diamond

This 1.21ct natural oval sits in the classic one-carat band, graded G 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 2557610799. Listed at 14 retailers as of November 5, 2026, with prices from $3,283 to $6,033, a $2,749 spread on the same certified stone. Helzberg Diamonds lists it at $6,033. 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

1.21
Carat
G
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle38.61°
Pavilion angle39.97°
OriginNatural
Grading LabGIA
CertificateGIA 2557610799
Dimensions8.34 × 5.99 × 3.72 mm
L/W Ratio1.39
Culet sizeNone
Top View
8.34 mm5.99 mm1.21 ctG / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2557610799
Side View
Table 60.0%Crown 38.61°Girdle: STK-THKPavilion 39.97°Culet: NoneDepth 62.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $6,033 AUD|Low: $3,264 AUD|High: $6,481 AUD|Avg: $4,294 AUD|-6.9%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 9$3,283 AUD
Retailer 12$3,308 AUD
Retailer 2$3,451 AUD
Retailer 11$3,510 AUD
Retailer 8$3,756 AUD
Retailer 5$3,823 AUD
Retailer 3$4,132 AUD
Retailer 10$4,221 AUD
Retailer 4$4,317 AUD
Retailer 6$4,404 AUD
Retailer 7$4,510 AUD
Retailer 13$5,758 AUD
Helzberg Diamonds$6,033 AUD

25 data points across 13 retailers

14 retailers$3,283 AUD to $6,033 AUD

A
Cheapest Retailer
-
$3,283 AUD
A
Retailer 2
-
$3,308 AUD
View
A
Retailer 3
-
$3,451 AUD
View
A
Retailer 4
-
$3,510 AUD
View
A
Retailer 5
-
$3,756 AUD
View
A
Retailer 6
-
$3,823 AUD
View
A
Retailer 7
-
$4,132 AUD
View
A
Retailer 8
-
$4,221 AUD
View
A
Retailer 9
-
$4,317 AUD
View
A
Retailer 10
-
$4,404 AUD
View
B+
Retailer 11
-
$4,510 AUD
View
B+
Retailer 12
-
$4,590 AUD
View
B+
Retailer 13
-
$5,758 AUD
View
Most Expensive
B+
Helzberg Diamonds
XZRILLNMHGNPP · Nov 6
$6,033 AUD
$4,145 USD
View
13 more retailers have this diamond
Prices start from $3,283 AUDSave up to $2,749 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
1.21ct Oval
$3,283 AUD