CaratHunter
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Oval|Natural|GIA

1.20ct J SI1 Oval Natural Diamond

ID • J/SI1 • GIA 1559636147

Certificate GIA 1559636147

Diamond specifications and retailer prices

From $5,243 NZD
$2,955 USD
As of November 1, 2026
Save $5,659 NZD (52%) vs most expensive(unlock to see where)
29 retailers carry this diamond
Most expensive: $11,356 NZD 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 November 1, 2026, with a 108% 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
Colour
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: Nov 1
Current: $6,812 NZD|Low: $5,905 NZD|High: $11,032 NZD|Avg: $7,474 NZD|+1.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 8$5,905 NZD
Retailer 9$6,004 NZD
Retailer 10$6,185 NZD
Retailer 4$6,358 NZD
Retailer 1$6,812 NZD
Retailer 11$6,872 NZD
Retailer 3$6,989 NZD
Retailer 7$7,631 NZD
Retailer 6$8,012 NZD
Retailer 2$9,509 NZD
Retailer 5$10,902 NZD

38 data points across 11 retailers

29 retailers$5,243 NZD to $10,902 NZD

B+
Cheapest Retailer
-
$5,243 NZD
$2,955 USD
B
Retailer 2
-
$5,546 NZD
$3,126 USD
View
B
Retailer 3
-
$5,704 NZD
$3,215 USD
View
Retailer 4
-
$5,905 NZD
$3,328 USD
View
Price last confirmed 69 days ago
Retailer 5
-
$5,905 NZD
$3,328 USD
View
Price last confirmed 42 days ago
Retailer 6
-
$5,905 NZD
$3,328 USD
View
Price last confirmed 31 days ago
B
Retailer 7
-
$5,905 NZD
$3,328 USD
View
B
Retailer 8
-
$5,929 NZD
$3,342 USD
View
B
Retailer 9
-
$6,004 NZD
CA$4,700 CAD
View
Retailer 10
-
$6,132 NZD
$3,456 USD
View
Price last confirmed 33 days ago
B
Retailer 11
-
$6,185 NZD
$3,486 USD
View
B
Retailer 12
-
$6,358 NZD
£2,822 GBP
View
B
Retailer 13
-
$6,689 NZD
$3,770 USD
View
B
Retailer 14
-
$6,689 NZD
$3,770 USD
View
B
Retailer 15
-
$6,812 NZD
£3,023 GBP
View
Retailer 16
-
$6,813 NZD
$3,840 USD
View
Price last confirmed 55 days ago
Retailer 17
-
$6,813 NZD
$3,840 USD
View
Price last confirmed 42 days ago
Retailer 18
-
$6,813 NZD
$3,840 USD
View
Price last confirmed 34 days ago
B
Retailer 19
-
$6,872 NZD
$3,873 USD
View
B
Retailer 20
-
$6,920 NZD
$3,900 USD
View
Retailer 21
-
$6,989 NZD
A$6,060 AUD
View
Price last confirmed 29 days ago
B
Retailer 22
-
$7,076 NZD
$3,988 USD
View
B
Retailer 23
-
$7,631 NZD
€4,096 EUR
View
B
Retailer 24
-
$8,012 NZD
ZAR 72,949 ZAR
View
B
Retailer 25
-
$9,509 NZD
$5,359 USD
View
B
Retailer 26
-
$10,902 NZD
£4,838 GBP
View
Retailer 27
-
$11,356 NZD
$6,400 USD
View
Price last confirmed 52 days ago
Retailer 28
-
$11,356 NZD
$6,400 USD
View
Price last confirmed 42 days ago
Most Expensive
NZ Jewellers
edaa7ba8-bce8-4bff-81fa-16e451f7ab09 · Sep 29
$11,356 NZD
$6,400 USD
View
Price last confirmed 33 days ago
28 more retailers have this diamond
Prices start from $5,243 NZDSave up to $5,659 NZD

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
$5,243 NZD