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Oval|Natural|GIA

1.21ct D SI1 Oval Natural Diamond

VG • D/SI1 • GIA 1525373512

Certificate GIA 1525373512

Diamond specifications and retailer prices

From $6,650 AUD
As of November 6, 2026
Save $8,163 AUD (55%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $14,813 AUD at NZ Jewellers · As of October 17, 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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 1525373512. Listed at 19 retailers as of November 5, 2026, with a 123% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.21
Carat
D
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1525373512
Dimensions8.12 × 5.86 × 3.79 mm
L/W Ratio1.39
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Needle
Top View
8.12 mm5.86 mm1.21 ctD / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1525373512
Side View
Table 58.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 64.7%

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 6
Current: $14,813 AUD|Low: $6,594 AUD|High: $14,813 AUD|Avg: $9,754 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
November 6, 2026
Retailer 13$6,650 AUD
Retailer 6$7,900 AUD
Retailer 3$8,360 AUD
Retailer 8$8,414 AUD
Retailer 2$8,591 AUD
Retailer 5$8,801 AUD
Retailer 11$9,058 AUD
Retailer 12$9,058 AUD
Retailer 4$9,077 AUD
Retailer 7$9,112 AUD
Retailer 14$10,451 AUD
Retailer 9$10,805 AUD
Retailer 10$13,011 AUD
NZ Jewellers$14,813 AUD

41 data points across 14 retailers

19 retailers$6,650 AUD to $14,813 AUD

B+
Cheapest Retailer
-
$6,650 AUD
B
Retailer 2
-
$7,900 AUD
View
Retailer 3
-
$8,102 AUD
View
Price last confirmed 81 days ago
B
Retailer 4
-
$8,360 AUD
View
Final sale: no returns
B
Retailer 5
-
$8,414 AUD
View
B
Retailer 6
-
$8,427 AUD
View
B
Retailer 7
-
$8,591 AUD
View
Retailer 8
-
$8,801 AUD
View
Price last confirmed 33 days ago
B
Retailer 9
-
$9,058 AUD
View
B
Retailer 10
-
$9,058 AUD
View
B
Retailer 11
-
$9,077 AUD
View
B
Retailer 12
-
$9,083 AUD
View
B
Retailer 13
-
$9,112 AUD
View
Retailer 14
-
$10,218 AUD
View
Price last confirmed 66 days ago
B
Retailer 15
-
$10,451 AUD
View
B
Retailer 16
-
$10,805 AUD
View
B
Retailer 17
-
$13,011 AUD
View
B
Retailer 18
-
$14,813 AUD
View
Most Expensive
NZ Jewellers
2ec539e1-1b40-40c3-9c86-2a9cdc662e84 · Oct 17
$14,813 AUD
$10,178 USD
View
Price last confirmed 20 days ago
18 more retailers have this diamond
Prices start from $6,650 AUDSave up to $8,163 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
$6,650 AUD