Round|Natural|GIA

1.20ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 6545266568

Certificate GIA 6545266568

Diamond specifications and retailer prices

From $3,452 NZD
HK$15,200 HKD
As of November 1, 2026
Save $4,518 NZD (57%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $9,510 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 6545266568. Listed at 22 retailers as of November 1, 2026, with a 131% 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 angle34°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6545266568
Dimensions6.77 × 6.83 × 4.13 mm
L/W Ratio1.01
Top View
6.77 mm6.83 mm1.20 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6545266568
Side View
Table 61.0%Crown 34°Girdle: Slightly ThickPavilion 40.8°Culet: NoneDepth 60.8%

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: Nov 1
Current: $5,656 NZD|Low: $3,429 NZD|High: $8,067 NZD|Avg: $4,884 NZD|+1.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 1, 2026
Retailer 9$3,452 NZD
Retailer 5$3,625 NZD
Retailer 2$4,007 NZD
Retailer 12$4,198 NZD
Retailer 3$4,260 NZD
Retailer 6$4,317 NZD
Retailer 11$4,549 NZD
Retailer 8$4,833 NZD
Retailer 4$5,091 NZD
Retailer 10$5,592 NZD
Retailer 1$5,656 NZD
Retailer 7$7,970 NZD

31 data points across 12 retailers

22 retailers$3,452 NZD to $7,970 NZD

A
Cheapest Retailer
-
$3,452 NZD
HK$15,200 HKD
A
Retailer 2
-
$3,625 NZD
₹194,576 INR
View
B+
Retailer 3
-
$4,007 NZD
SGD 3,052 SGD
View
B+
Retailer 4
-
$4,198 NZD
$2,366 USD
View
Final sale: no returns
B+
Retailer 5
-
$4,260 NZD
$2,401 USD
View
B+
Retailer 6
-
$4,280 NZD
$2,412 USD
View
B+
Retailer 7
-
$4,285 NZD
$2,415 USD
View
B+
Retailer 8
-
$4,317 NZD
£1,916 GBP
View
Retailer 9
-
$4,549 NZD
$2,564 USD
View
Price last confirmed 34 days ago
Retailer 10
-
$4,549 NZD
$2,564 USD
View
Price last confirmed 7 days ago
Retailer 11
-
$4,549 NZD
$2,564 USD
View
Price last confirmed 31 days ago
Retailer 12
-
$4,759 NZD
$2,682 USD
View
Price last confirmed 33 days ago
B+
Retailer 13
-
$4,799 NZD
$2,705 USD
View
B+
Retailer 14
-
$4,808 NZD
SGD 3,662 SGD
View
B+
Retailer 15
-
$4,833 NZD
£2,145 GBP
View
Retailer 16
-
$5,091 NZD
A$4,414 AUD
View
Price last confirmed 26 days ago
Retailer 17
-
$5,248 NZD
$2,958 USD
View
Price last confirmed 33 days ago
B+
Retailer 18
-
$5,592 NZD
ZAR 50,912 ZAR
View
B+
Retailer 19
-
$5,656 NZD
€3,036 EUR
View
B
Retailer 20
-
$7,970 NZD
£3,537 GBP
View
Retailer 21
-
$9,510 NZD
$5,360 USD
View
Price last confirmed 34 days ago
Most Expensive
NZ Jewellers
f1eaef19-7cf6-4a04-beac-734430fbd376 · Oct 3
$9,510 NZD
$5,360 USD
View
Price last confirmed 29 days ago
21 more retailers have this diamond
Prices start from $3,452 NZDSave up to $4,518 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
$3,452 NZD