Oval|Natural|GIA

1.21ct I SI1 Oval Natural Diamond

EX • I/SI1 • GIA 6512485714

Certificate GIA 6512485714

Diamond specifications and retailer prices

From $5,261 AUD
As of November 5, 2026
Save $6,236 AUD (54%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $11,498 AUD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.21ct natural oval diamond

This 1.21ct natural oval sits in the classic one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6512485714. Listed at 14 retailers as of November 5, 2026, with prices from $5,261 to $11,498, a $6,236 spread on the same certified stone. NZ Jewellers lists it at $11,498. 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
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6512485714
Dimensions8.49 × 5.71 × 3.62 mm
L/W Ratio1.49
Top View
8.49 mm5.71 mm1.21 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6512485714
Side View
Table 56.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 63.5%

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: Nov 5
Current: $6,402 AUD|Low: $5,261 AUD|High: $10,639 AUD|Avg: $7,068 AUD|-1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 7$5,261 AUD
Retailer 6$5,616 AUD
Retailer 9$5,691 AUD
Retailer 1$6,402 AUD
Retailer 8$6,653 AUD
Retailer 2$6,685 AUD
Retailer 5$7,466 AUD
Retailer 3$8,051 AUD
Retailer 4$10,483 AUD

39 data points across 9 retailers

14 retailers$5,261 AUD to $11,498 AUD

B
Cheapest Retailer
-
$5,261 AUD
B+
Retailer 2
-
$5,616 AUD
View
B+
Retailer 3
-
$5,691 AUD
View
B
Retailer 4
-
$5,979 AUD
View
Retailer 5
-
$5,979 AUD
View
Price last confirmed 8 days ago
B
Retailer 6
-
$5,979 AUD
View
B
Retailer 7
-
$6,402 AUD
View
Retailer 8
-
$6,653 AUD
View
Price last confirmed 28 days ago
B
Retailer 9
-
$6,685 AUD
View
B
Retailer 10
-
$6,899 AUD
View
B
Retailer 11
-
$7,466 AUD
View
B
Retailer 12
-
$8,051 AUD
View
B
Retailer 13
-
$10,483 AUD
View
Most Expensive
B
NZ Jewellers
edce7938-a8a4-4108-9120-d4a5b64d9071 · Nov 5
$11,498 AUD
$7,900 USD
View
13 more retailers have this diamond
Prices start from $5,261 AUDSave up to $6,236 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+
1.21ct Oval
$5,261 AUD