Round|Natural|GIA

1.00ct J SI1 Round Natural Diamond

VG • J/SI1 • GIA 5423535519

Certificate GIA 5423535519

Diamond specifications and retailer prices

From $1,751 USD
As of November 6, 2026
Save $2,828 USD (62%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $4,579 USD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1ct natural round diamond

This 1ct natural round sits in the classic one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by GIA 5423535519. Listed at 20 retailers as of November 5, 2026, with prices from $1,751 to $4,579, a $2,828 spread on the same certified stone. NZ Jewellers lists it at $4,579. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.00
Carat
J
Color
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceFaint
Crown angle38.5°
Pavilion angle39.8°
OriginNatural
Grading LabGIA
CertificateGIA 5423535519
Dimensions6.30 × 6.25 × 3.97 mm
L/W Ratio1.01
Top View
6.30 mm6.25 mm1.00 ctJ / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 5423535519
Side View
Table 57.0%Crown 38.5°Girdle: STK-THKPavilion 39.8°Culet: NoneDepth 63.3%

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: Nov 6
Current: $2,552 USD|Low: $1,573 USD|High: $3,883 USD|Avg: $2,507 USD|-0.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 5, 2026
Retailer 7$1,792 USD
Retailer 9$1,831 USD
Retailer 8$1,845 USD
Retailer 2$2,076 USD
Retailer 5$2,365 USD
Retailer 1$2,552 USD
Retailer 4$2,673 USD
Retailer 10$2,693 USD
Retailer 3$2,777 USD
Retailer 6$3,826 USD

42 data points across 10 retailers

20 retailers$1,751 USD to $4,579 USD

B+
Cheapest Retailer
-
$1,751 USD
B+
Retailer 2
-
$1,788 USD
View
B+
Retailer 3
-
$1,792 USD
View
B+
Retailer 4
-
$1,831 USD
View
Final sale: no returns
B+
Retailer 5
-
$1,845 USD
View
B+
Retailer 6
-
$1,866 USD
View
Retailer 7
-
$1,984 USD
View
Price last confirmed 8 days ago
B+
Retailer 8
-
$1,984 USD
View
B
Retailer 9
-
$2,020 USD
View
B+
Retailer 10
-
$2,076 USD
View
B
Retailer 11
-
$2,267 USD
View
B
Retailer 12
-
$2,289 USD
View
B
Retailer 13
-
$2,365 USD
View
B
Retailer 14
-
$2,522 USD
View
B
Retailer 15
-
$2,552 USD
View
B
Retailer 16
-
$2,673 USD
View
Retailer 17
-
$2,693 USD
View
Price last confirmed 31 days ago
B
Retailer 18
-
$2,777 USD
View
B
Retailer 19
-
$3,826 USD
View
Most Expensive
C
NZ Jewellers
9ae6d256-84b7-426f-a4bd-e2661672ff5a · Nov 5
$4,579 USD
View
19 more retailers have this diamond
Prices start from $1,751 USDSave up to $2,828 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+
1.00ct Round
$1,751 USD