Round|Natural|GIA

1.20ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 1529068672

Certificate GIA 1529068672

Diamond specifications and retailer prices

From $3,524 NZD
$1,986 USD
As of October 31, 2026
Save $4,967 NZD (58%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $10,252 NZD at NZ Jewellers · As of October 3, 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 1529068672. Listed at 24 retailers as of October 29, 2026, with a 141% 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
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 1529068672
Dimensions6.78 × 6.73 × 4.24 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Culet sizeNone
Key to symbols
Twinning Wisp, Crystal, Needle, Indented Natural, Natural
Top View
6.78 mm6.73 mm1.20 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1529068672
Side View
Table 59.0%Crown 35°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 62.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $5,122 NZD|Low: $3,524 NZD|High: $9,787 NZD|Avg: $5,117 NZD|-0.5%
Retailer 1
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
Retailer 19
November 2, 2026
Retailer 8$3,524 NZD
Retailer 16$3,656 NZD
Retailer 10$3,726 NZD
Retailer 14$3,942 NZD
Retailer 6$3,946 NZD
Retailer 4$4,028 NZD
Retailer 2$4,031 NZD
Retailer 17$4,338 NZD
Retailer 13$4,574 NZD
Retailer 3$5,021 NZD
Retailer 5$5,021 NZD
Retailer 1$5,122 NZD
Retailer 7$5,181 NZD
Retailer 11$5,494 NZD
Retailer 12$5,628 NZD
Retailer 9$5,662 NZD
Retailer 18$5,898 NZD
Retailer 15$5,925 NZD
Retailer 19$8,491 NZD

25 data points across 19 retailers

24 retailers$3,524 NZD to $8,491 NZD

A
Cheapest Retailer
-
$3,524 NZD
$1,986 USD
A
Retailer 2
-
$3,656 NZD
HK$16,100 HKD
View
Retailer 3
-
$3,726 NZD
₹200,004 INR
View
Price last confirmed 17 days ago
A
Retailer 4
-
$3,942 NZD
$2,222 USD
View
B+
Retailer 5
-
$3,946 NZD
$2,224 USD
View
B+
Retailer 6
-
$4,028 NZD
$2,270 USD
View
B+
Retailer 7
-
$4,031 NZD
$2,272 USD
View
Final sale: no returns
B+
Retailer 8
-
$4,338 NZD
$2,445 USD
View
B+
Retailer 9
-
$4,574 NZD
£2,030 GBP
View
Retailer 10
-
$4,904 NZD
$2,764 USD
View
Price last confirmed 25 days ago
Retailer 11
-
$4,904 NZD
$2,764 USD
View
Price last confirmed 17 days ago
B
Retailer 12
-
$5,021 NZD
$2,830 USD
View
B
Retailer 13
-
$5,021 NZD
$2,830 USD
View
Retailer 14
-
$5,080 NZD
SGD 3,869 SGD
View
Price last confirmed 18 days ago
Retailer 15
-
$5,092 NZD
$2,870 USD
View
Price last confirmed 17 days ago
B+
Retailer 16
-
$5,122 NZD
£2,273 GBP
View
B
Retailer 17
-
$5,181 NZD
$2,920 USD
View
Retailer 18
-
$5,494 NZD
A$4,764 AUD
View
Price last confirmed 25 days ago
B+
Retailer 19
-
$5,628 NZD
€3,021 EUR
View
Retailer 20
-
$5,658 NZD
$3,189 USD
View
Price last confirmed 23 days ago
B
Retailer 21
-
$5,898 NZD
$3,324 USD
View
B
Retailer 22
-
$5,925 NZD
ZAR 53,946 ZAR
View
B
Retailer 23
-
$8,491 NZD
£3,768 GBP
View
Most Expensive
NZ Jewellers
bf041d67-0ec4-4b79-bf90-36d06de6a248 · Oct 3
$10,252 NZD
$5,778 USD
View
Price last confirmed 29 days ago
23 more retailers have this diamond
Prices start from $3,524 NZDSave up to $4,967 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.

A
1.20ct Round
$3,524 NZD