Oval|Natural|GIA

1.20ct I SI1 Oval Natural Diamond

VG • I/SI1 • GIA 6542158371

Certificate GIA 6542158371

Diamond specifications and retailer prices

From $4,176 AUD
As of November 4, 2026
Save $5,283 AUD (56%) vs most expensive(unlock to see where)
34 retailers carry this diamond
Most expensive: $9,459 AUD at NZ Jewellers · As of September 30, 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6542158371. Listed at 34 retailers as of November 4, 2026, with a 127% 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
I
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle39.91°
Pavilion angle39.79°
OriginNatural
Grading LabGIA
CertificateGIA 6542158371
Dimensions8.17 × 5.92 × 3.78 mm
L/W Ratio1.38
Top View
8.17 mm5.92 mm1.20 ctI / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 6542158371
Side View
Table 59.0%Crown 39.91°Girdle: STK-THKPavilion 39.79°Culet: NoneDepth 63.8%

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 4
Current: $6,626 AUD|Low: $4,161 AUD|High: $9,188 AUD|Avg: $5,708 AUD|+1.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 5, 2026
Retailer 6$4,176 AUD
Retailer 10$4,539 AUD
Retailer 2$4,583 AUD
Retailer 3$4,752 AUD
Retailer 8$4,919 AUD
Retailer 9$5,577 AUD
Retailer 4$5,618 AUD
Retailer 11$5,814 AUD
Retailer 7$6,353 AUD
Retailer 1$6,626 AUD
Retailer 5$9,054 AUD

38 data points across 11 retailers

34 retailers$4,176 AUD to $9,459 AUD

B+
Cheapest Retailer
-
$4,176 AUD
B+
Retailer 2
-
$4,366 AUD
View
B+
Retailer 3
-
$4,539 AUD
View
Final sale: no returns
B+
Retailer 4
-
$4,583 AUD
View
B
Retailer 5
-
$4,752 AUD
View
Retailer 6
-
$4,919 AUD
View
Price last confirmed 30 days ago
Retailer 7
-
$4,919 AUD
View
Price last confirmed 36 days ago
Retailer 8
-
$4,919 AUD
View
Price last confirmed 15 days ago
Retailer 9
-
$4,919 AUD
View
Price last confirmed 8 days ago
Retailer 10
-
$4,919 AUD
View
Price last confirmed 21 days ago
Retailer 11
-
$4,919 AUD
View
Price last confirmed 45 days ago
B
Retailer 12
-
$4,935 AUD
View
Retailer 13
-
$5,108 AUD
View
Price last confirmed 38 days ago
B
Retailer 14
-
$5,356 AUD
View
B
Retailer 15
-
$5,356 AUD
View
B
Retailer 16
-
$5,545 AUD
View
B
Retailer 17
-
$5,577 AUD
View
Retailer 18
-
$5,577 AUD
View
Price last confirmed 28 days ago
Retailer 19
-
$5,577 AUD
View
Price last confirmed 37 days ago
B
Retailer 20
-
$5,618 AUD
View
Retailer 21
-
$5,675 AUD
View
Price last confirmed 45 days ago
Retailer 22
-
$5,675 AUD
View
Price last confirmed 38 days ago
Retailer 23
-
$5,675 AUD
View
Price last confirmed 28 days ago
Retailer 24
-
$5,675 AUD
View
Price last confirmed 16 days ago
B
Retailer 25
-
$5,675 AUD
View
Retailer 26
-
$5,814 AUD
View
Price last confirmed 29 days ago
B
Retailer 27
-
$5,877 AUD
View
B
Retailer 28
-
$6,353 AUD
View
B
Retailer 29
-
$6,626 AUD
View
B
Retailer 30
-
$9,054 AUD
View
Retailer 31
-
$9,459 AUD
View
Price last confirmed 48 days ago
Retailer 32
-
$9,459 AUD
View
Price last confirmed 17 days ago
C
Retailer 33
-
$9,459 AUD
View
Most Expensive
NZ Jewellers
5139d971-50c4-4f32-ac7c-6bcbe1b82803 · Sep 30
$9,459 AUD
$6,499 USD
View
Price last confirmed 37 days ago
33 more retailers have this diamond
Prices start from $4,176 AUDSave up to $5,283 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
$4,176 AUD