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Round|Natural|GIA

1.20ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 5563366918

Certificate GIA 5563366918

Diamond specifications and retailer prices

From $4,257 NZD
$2,399 USD
As of October 31, 2026
Save $6,345 NZD (60%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $10,601 NZD at NZ Jewellers · As of October 27, 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 5563366918. Listed at 20 retailers as of October 27, 2026, with prices from $4,257 to $10,601, a $6,345 spread on the same certified stone. NZ Jewellers lists it at $10,601. 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 angle35.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 5563366918
Dimensions6.76 × 6.71 × 4.24 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather, Needle
Top View
6.76 mm6.71 mm1.20 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5563366918
Side View
Table 58.0%Crown 35.5°Girdle: Med. - Sli. ThickPavilion 41.2°Culet: NDepth 62.9%

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: $10,601 NZD|Low: $4,257 NZD|High: $10,690 NZD|Avg: $5,614 NZD|-0.8%
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
Retailer 19
November 1, 2026
Retailer 11$4,257 NZD
Retailer 18$4,542 NZD
Retailer 19$4,613 NZD
Retailer 7$4,681 NZD
Retailer 5$4,799 NZD
Retailer 12$4,812 NZD
Retailer 8$4,968 NZD
Retailer 14$5,071 NZD
Retailer 16$5,071 NZD
Retailer 9$5,163 NZD
Retailer 17$5,266 NZD
Retailer 6$5,323 NZD
Retailer 13$5,389 NZD
Retailer 15$5,463 NZD
Retailer 3$5,852 NZD
Retailer 2$5,911 NZD
Retailer 4$6,175 NZD
Retailer 10$8,932 NZD
NZ Jewellers$10,601 NZD

20 data points across 19 retailers

20 retailers$4,257 NZD to $10,601 NZD

B+
Cheapest Retailer
-
$4,257 NZD
$2,399 USD
B+
Retailer 2
-
$4,542 NZD
$2,560 USD
View
B+
Retailer 3
-
$4,613 NZD
$2,600 USD
View
B+
Retailer 4
-
$4,681 NZD
$2,638 USD
View
Final sale: no returns
B+
Retailer 5
-
$4,799 NZD
$2,705 USD
View
B+
Retailer 6
-
$4,812 NZD
£2,136 GBP
View
B+
Retailer 7
-
$4,968 NZD
$2,800 USD
View
B+
Retailer 8
-
$5,071 NZD
$2,858 USD
View
B+
Retailer 9
-
$5,071 NZD
$2,858 USD
View
B
Retailer 10
-
$5,163 NZD
$2,910 USD
View
B+
Retailer 11
-
$5,266 NZD
$2,968 USD
View
B+
Retailer 12
-
$5,323 NZD
$3,000 USD
View
B+
Retailer 13
-
$5,389 NZD
£2,392 GBP
View
B
Retailer 14
-
$5,463 NZD
$3,079 USD
View
Retailer 15
-
$5,775 NZD
A$5,007 AUD
View
Price last confirmed 25 days ago
B
Retailer 16
-
$5,852 NZD
$3,298 USD
View
B
Retailer 17
-
$5,911 NZD
€3,173 EUR
View
B
Retailer 18
-
$6,175 NZD
ZAR 56,224 ZAR
View
B
Retailer 19
-
$8,932 NZD
£3,964 GBP
View
Most Expensive
C
NZ Jewellers
b2f06508-a94f-49b8-95ab-fca17bc7698d · Oct 27
$10,601 NZD
$5,975 USD
View
19 more retailers have this diamond
Prices start from $4,257 NZDSave up to $6,345 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
$4,257 NZD