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Oval|Natural|GIA

1.21ct D SI1 Oval Natural Diamond

EX • D/SI1 • GIA 6542388209

Certificate GIA 6542388209

Diamond specifications and retailer prices

From $5,680 AUD
As of November 5, 2026
Save $4,887 AUD (46%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $11,591 AUD at NZ Jewellers · As of October 23, 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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6542388209. Listed at 16 retailers as of November 4, 2026, with a 86% 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

1.21
Carat
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6542388209
Dimensions8.23 × 5.94 × 3.75 mm
L/W Ratio1.39
Top View
8.23 mm5.94 mm1.21 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6542388209
Side View
Table 62.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 63.2%

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: $11,591 AUD|Low: $5,680 AUD|High: $11,591 AUD|Avg: $7,326 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
November 6, 2026
Retailer 13$5,680 AUD
Retailer 7$5,803 AUD
Retailer 3$6,140 AUD
Retailer 16$6,295 AUD
Retailer 2$6,453 AUD
Retailer 10$6,551 AUD
Retailer 5$6,653 AUD
Retailer 14$6,653 AUD
Retailer 15$6,653 AUD
Retailer 8$6,830 AUD
Retailer 4$6,960 AUD
Retailer 9$7,485 AUD
Retailer 6$7,676 AUD
Retailer 11$8,117 AUD
Retailer 12$10,568 AUD
NZ Jewellers$11,591 AUD

31 data points across 16 retailers

16 retailers$5,680 AUD to $10,568 AUD

B+
Cheapest Retailer
-
$5,680 AUD
B+
Retailer 2
-
$5,803 AUD
View
B+
Retailer 3
-
$6,140 AUD
View
Final sale: no returns
B+
Retailer 4
-
$6,295 AUD
View
B+
Retailer 5
-
$6,453 AUD
View
B+
Retailer 6
-
$6,551 AUD
View
Retailer 7
-
$6,653 AUD
View
Price last confirmed 12 days ago
Retailer 8
-
$6,653 AUD
View
Price last confirmed 12 days ago
Retailer 9
-
$6,653 AUD
View
Price last confirmed 11 days ago
Retailer 10
-
$6,830 AUD
View
Price last confirmed 28 days ago
B+
Retailer 11
-
$6,960 AUD
View
B+
Retailer 12
-
$7,485 AUD
View
Retailer 13
-
$7,676 AUD
View
Price last confirmed 14 days ago
B+
Retailer 14
-
$8,117 AUD
View
B
Retailer 15
-
$10,568 AUD
View
Most Expensive
NZ Jewellers
aa22a294-41c5-4041-bda9-a3e21c25432e · Oct 23
$11,591 AUD
$7,964 USD
View
Price last confirmed 13 days ago
15 more retailers have this diamond
Prices start from $5,680 AUDSave up to $4,887 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
$5,680 AUD