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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 $2,399 USD
As of October 31, 2026
Save $3,576 USD (60%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $5,975 USD 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 $2,399 to $5,975, a $3,576 spread on the same certified stone. NZ Jewellers lists it at $5,975. 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
Color
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: $5,975 USD|Low: $2,399 USD|High: $6,025 USD|Avg: $3,162 USD|-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
October 31, 2026
Retailer 11$2,399 USD
Retailer 18$2,560 USD
Retailer 19$2,600 USD
Retailer 7$2,638 USD
Retailer 5$2,705 USD
Retailer 14$2,728 USD
Retailer 8$2,800 USD
Retailer 13$2,858 USD
Retailer 16$2,858 USD
Retailer 9$2,910 USD
Retailer 15$2,968 USD
Retailer 6$3,000 USD
Retailer 12$3,028 USD
Retailer 2$3,079 USD
Retailer 3$3,298 USD
Retailer 17$3,341 USD
Retailer 4$3,480 USD
Retailer 10$5,034 USD
NZ Jewellers$5,975 USD

20 data points across 19 retailers

20 retailers$2,399 USD to $5,975 USD

B+
Cheapest Retailer
-
$2,399 USD
B+
Retailer 2
-
$2,560 USD
View
B+
Retailer 3
-
$2,600 USD
View
B+
Retailer 4
-
$2,638 USD
View
Final sale: no returns
B+
Retailer 5
-
$2,705 USD
View
B+
Retailer 6
-
$2,728 USD
£2,148 GBP
View
B+
Retailer 7
-
$2,800 USD
View
B+
Retailer 8
-
$2,858 USD
View
B+
Retailer 9
-
$2,858 USD
View
B
Retailer 10
-
$2,910 USD
View
B+
Retailer 11
-
$2,968 USD
View
B+
Retailer 12
-
$3,000 USD
View
B+
Retailer 13
-
$3,028 USD
£2,384 GBP
View
B
Retailer 14
-
$3,079 USD
View
Retailer 15
-
$3,255 USD
A$5,007 AUD
View
Price last confirmed 23 days ago
B
Retailer 16
-
$3,298 USD
View
B
Retailer 17
-
$3,341 USD
€3,182 EUR
View
B
Retailer 18
-
$3,480 USD
ZAR 56,224 ZAR
View
B
Retailer 19
-
$5,034 USD
£3,964 GBP
View
Most Expensive
C
NZ Jewellers
b2f06508-a94f-49b8-95ab-fca17bc7698d · Oct 27
$5,975 USD
View
19 more retailers have this diamond
Prices start from $2,399 USDSave up to $3,576 USD

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
$2,399 USD