Oval|Natural|GIA

1.20ct J SI1 Oval Natural Diamond

ID • J/SI1 • GIA 1559636147

Certificate GIA 1559636147

Diamond specifications and retailer prices

From $4,128 CAD
$2,955 USD
As of October 30, 2026
Save $4,499 CAD (52%) vs most expensive(unlock to see where)
29 retailers carry this diamond
Most expensive: $8,940 CAD at NZ Jewellers · As of September 29, 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 J 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 1559636147. Listed at 29 retailers as of October 29, 2026, with a 109% 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

1.20
Carat
J
Color
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1559636147
Dimensions8.59 × 5.92 × 3.54 mm
L/W Ratio1.45
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Cloud, Twinning Wisp, Cavity, Needle
Top View
8.59 mm5.92 mm1.20 ctJ / SI1
OriginNatural
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1559636147
Side View
Table 58.0%CrownGirdle: THN-VTKPavilionCulet: NoneDepth 59.8%

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: Oct 30
Current: $5,021 CAD|Low: $4,649 CAD|High: $8,686 CAD|Avg: $5,900 CAD
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 8$4,649 CAD
Retailer 9$4,727 CAD
Retailer 10$4,870 CAD
Retailer 1$5,021 CAD
Retailer 4$5,363 CAD
Retailer 11$5,410 CAD
Retailer 3$5,502 CAD
Retailer 6$5,999 CAD
Retailer 7$6,249 CAD
Retailer 2$7,486 CAD
Retailer 5$8,627 CAD

39 data points across 11 retailers

29 retailers$4,128 CAD to $8,627 CAD

B+
Cheapest Retailer
-
$4,128 CAD
$2,955 USD
B
Retailer 2
-
$4,367 CAD
$3,126 USD
View
B
Retailer 3
-
$4,491 CAD
$3,215 USD
View
Retailer 4
-
$4,649 CAD
$3,328 USD
View
Price last confirmed 66 days ago
Retailer 5
-
$4,649 CAD
$3,328 USD
View
Price last confirmed 39 days ago
Retailer 6
-
$4,649 CAD
$3,328 USD
View
Price last confirmed 29 days ago
B
Retailer 7
-
$4,649 CAD
$3,328 USD
View
B
Retailer 8
-
$4,668 CAD
$3,342 USD
View
B
Retailer 9
-
$4,727 CAD
View
Retailer 10
-
$4,828 CAD
$3,456 USD
View
Price last confirmed 30 days ago
B
Retailer 11
-
$4,870 CAD
$3,486 USD
View
B
Retailer 12
-
$5,021 CAD
£2,830 GBP
View
B
Retailer 13
-
$5,266 CAD
$3,770 USD
View
B
Retailer 14
-
$5,266 CAD
$3,770 USD
View
B
Retailer 15
-
$5,363 CAD
£3,023 GBP
View
Retailer 16
-
$5,364 CAD
$3,840 USD
View
Price last confirmed 52 days ago
Retailer 17
-
$5,364 CAD
$3,840 USD
View
Price last confirmed 39 days ago
Retailer 18
-
$5,364 CAD
$3,840 USD
View
Price last confirmed 31 days ago
B
Retailer 19
-
$5,410 CAD
$3,873 USD
View
B
Retailer 20
-
$5,448 CAD
$3,900 USD
View
Retailer 21
-
$5,502 CAD
A$6,060 AUD
View
Price last confirmed 26 days ago
B
Retailer 22
-
$5,571 CAD
$3,988 USD
View
B
Retailer 23
-
$5,999 CAD
€4,090 EUR
View
B
Retailer 24
-
$6,249 CAD
ZAR 72,267 ZAR
View
B
Retailer 25
-
$7,486 CAD
$5,359 USD
View
B
Retailer 26
-
$8,627 CAD
£4,863 GBP
View
Retailer 27
-
$8,940 CAD
$6,400 USD
View
Price last confirmed 49 days ago
Retailer 28
-
$8,940 CAD
$6,400 USD
View
Price last confirmed 40 days ago
Most Expensive
NZ Jewellers
edaa7ba8-bce8-4bff-81fa-16e451f7ab09 · Sep 29
$8,940 CAD
$6,400 USD
View
Price last confirmed 31 days ago
28 more retailers have this diamond
Prices start from $4,128 CADSave up to $4,499 CAD

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
$4,128 CAD