Round|Natural|GIA

1.20ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 1298194820

Certificate GIA 1298194820

Diamond specifications and retailer prices

From $4,065 NZD
₹218,174 INR
As of October 31, 2026
Save $1,888 NZD (32%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $9,418 NZD at NZ Jewellers · As of October 20, 2026
View at NZ Jewellers

About this 1.2ct natural round diamond

This 1.2ct natural round sits in the classic one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1298194820. Listed at 19 retailers as of October 31, 2026, with a 46% 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1298194820
Dimensions6.79 × 6.71 × 4.24 mm
L/W Ratio1.01
Top View
6.79 mm6.71 mm1.20 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1298194820
Side View
Table 56.0%CrownGirdle: MediumPavilionCulet: NoneDepth 62.8%

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 31
Current: $9,418 NZD|Low: $4,054 NZD|High: $9,418 NZD|Avg: $5,814 NZD
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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
October 31, 2026
Retailer 2$4,065 NZD
Retailer 10$4,615 NZD
Retailer 9$4,842 NZD
Retailer 16$4,906 NZD
Retailer 7$4,964 NZD
Retailer 13$5,128 NZD
Retailer 8$5,261 NZD
Retailer 3$5,406 NZD
Retailer 4$5,406 NZD
Retailer 18$5,614 NZD
Retailer 14$5,635 NZD
Retailer 6$5,796 NZD
Retailer 11$5,952 NZD
Retailer 15$6,219 NZD
Retailer 5$6,237 NZD
Retailer 12$6,524 NZD
Retailer 17$9,088 NZD
NZ Jewellers$9,418 NZD

34 data points across 18 retailers

19 retailers$4,065 NZD to $5,952 NZD

B+
Cheapest Retailer
-
$4,065 NZD
₹218,174 INR
Retailer 2
-
$4,615 NZD
$2,601 USD
View
Price last confirmed 12 days ago
Retailer 3
-
$4,842 NZD
$2,729 USD
View
Price last confirmed 12 days ago
Retailer 4
-
$4,906 NZD
$2,765 USD
View
Price last confirmed 11 days ago
Retailer 5
-
$4,964 NZD
$2,798 USD
View
Price last confirmed 11 days ago
Retailer 6
-
$5,128 NZD
£2,276 GBP
View
Price last confirmed 10 days ago
Retailer 7
-
$5,261 NZD
$2,965 USD
View
Price last confirmed 9 days ago
Retailer 8
-
$5,406 NZD
$3,047 USD
View
Price last confirmed 10 days ago
Retailer 9
-
$5,406 NZD
$3,047 USD
View
Price last confirmed 16 days ago
Retailer 10
-
$5,614 NZD
$3,164 USD
View
Price last confirmed 17 days ago
Retailer 11
-
$5,635 NZD
£2,501 GBP
View
Price last confirmed 11 days ago
Retailer 12
-
$5,659 NZD
$3,190 USD
View
Price last confirmed 14 days ago
Retailer 13
-
$5,796 NZD
A$5,026 AUD
View
Price last confirmed 28 days ago
B
Retailer 14
-
$5,952 NZD
€3,195 EUR
View
Retailer 15
-
$6,219 NZD
£2,760 GBP
View
Price last confirmed 11 days ago
Retailer 16
-
$6,237 NZD
$3,515 USD
View
Price last confirmed 11 days ago
Retailer 17
-
$6,524 NZD
ZAR 59,403 ZAR
View
Price last confirmed 10 days ago
Retailer 18
-
$9,088 NZD
£4,033 GBP
View
Price last confirmed 11 days ago
Most Expensive
NZ Jewellers
09ae892f-2b49-4085-a32f-59d8319f501c · Oct 20
$9,418 NZD
$5,308 USD
View
Price last confirmed 12 days ago
18 more retailers have this diamond
Prices start from $4,065 NZDSave up to $1,888 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 Round
$4,065 NZD