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Oval|Natural|GIA

1.20ct K SI1 Oval Natural Diamond

GD • K/SI1 • GIA 1375718922

Certificate GIA 1375718922

Diamond specifications and retailer prices

From $3,838 AUD
As of November 5, 2026
Save $3,139 AUD (45%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $8,961 AUD at NZ Jewellers · As of October 20, 2026
View at NZ Jewellers

About this 1.2ct natural oval diamond

This 1.2ct natural oval sits in the classic one-carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 1375718922. Listed at 18 retailers as of November 4, 2026, with a 82% 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

1.20
Carat
K
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 1375718922
Dimensions8.49 × 5.84 × 3.65 mm
L/W Ratio1.45
Culet sizeNone
Top View
8.49 mm5.84 mm1.20 ctK / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 1375718922
Side View
Table 59.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 62.4%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $8,961 AUD|Low: $3,838 AUD|High: $8,961 AUD|Avg: $4,985 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 10$3,838 AUD
Retailer 13$3,892 AUD
Retailer 12$3,900 AUD
Retailer 8$4,027 AUD
Retailer 3$4,033 AUD
Retailer 2$4,059 AUD
Retailer 4$4,184 AUD
Retailer 5$4,286 AUD
Retailer 14$4,451 AUD
Retailer 6$4,945 AUD
Retailer 7$4,989 AUD
Retailer 9$5,231 AUD
Retailer 11$6,977 AUD
NZ Jewellers$8,961 AUD

36 data points across 14 retailers

18 retailers$3,838 AUD to $6,977 AUD

B
Cheapest Retailer
-
$3,838 AUD
B
Retailer 2
-
$3,848 AUD
View
B
Retailer 3
-
$3,892 AUD
View
Retailer 4
-
$3,900 AUD
View
Price last confirmed 16 days ago
B
Retailer 5
-
$4,027 AUD
View
B
Retailer 6
-
$4,033 AUD
View
B
Retailer 7
-
$4,059 AUD
View
B
Retailer 8
-
$4,184 AUD
View
Retailer 9
-
$4,286 AUD
View
Price last confirmed 15 days ago
Retailer 10
-
$4,286 AUD
View
Price last confirmed 21 days ago
Retailer 11
-
$4,451 AUD
View
Price last confirmed 15 days ago
B
Retailer 12
-
$4,451 AUD
View
Retailer 13
-
$4,945 AUD
View
Price last confirmed 14 days ago
B
Retailer 14
-
$4,945 AUD
View
B
Retailer 15
-
$4,989 AUD
View
B
Retailer 16
-
$5,231 AUD
View
C
Retailer 17
-
$6,977 AUD
View
Most Expensive
NZ Jewellers
2fee05b9-a252-498c-b3a2-255a714bf111 · Oct 20
$8,961 AUD
$6,157 USD
View
Price last confirmed 16 days ago
17 more retailers have this diamond
Prices start from $3,838 AUDSave up to $3,139 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
1.20ct Oval
$3,838 AUD