Round|Natural|GIA

1.00ct J SI2 Round Natural Diamond

VG • J/SI2 • GIA 1559494856

Certificate GIA 1559494856

Diamond specifications and retailer prices

From $1,331 USD
As of November 4, 2026
Save $2,894 USD (68%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $4,225 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 SI2 clarity (slightly-included), with a very-good cut grade and certified by GIA 1559494856. Listed at 20 retailers as of November 4, 2026, with prices from $1,331 to $4,225, a $2,894 spread on the same certified stone. NZ Jewellers lists it at $4,225. 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
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle38°
Pavilion angle40.2°
OriginNatural
Grading LabGIA
CertificateGIA 1559494856
Dimensions6.18 × 6.24 × 3.98 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Feather, Crystal, Cavity, Needle, Indented Natural, Natural
Top View
6.18 mm6.24 mm1.00 ctJ / SI2
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 1559494856
Side View
Table 59.0%Crown 38°Girdle: STK-THKPavilion 40.2°Culet: NoneDepth 64.1%

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 4
Current: $1,858 USD|Low: $1,331 USD|High: $3,072 USD|Avg: $1,923 USD
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 10$1,331 USD
Retailer 6$1,344 USD
Retailer 2$1,598 USD
Retailer 7$1,622 USD
Retailer 11$1,726 USD
Retailer 1$1,858 USD
Retailer 4$1,911 USD
Retailer 3$1,929 USD
Retailer 5$2,012 USD
Retailer 8$2,275 USD
Retailer 9$3,026 USD

32 data points across 11 retailers

20 retailers$1,331 USD to $4,225 USD

A
Cheapest Retailer
-
$1,331 USD
A
Retailer 2
-
$1,344 USD
View
B+
Retailer 3
-
$1,578 USD
View
B+
Retailer 4
-
$1,598 USD
View
Final sale: no returns
B+
Retailer 5
-
$1,622 USD
View
B+
Retailer 6
-
$1,726 USD
View
B+
Retailer 7
-
$1,732 USD
View
Retailer 8
-
$1,732 USD
View
Price last confirmed 8 days ago
B+
Retailer 9
-
$1,812 USD
View
B+
Retailer 10
-
$1,858 USD
View
B+
Retailer 11
-
$1,869 USD
View
B+
Retailer 12
-
$1,887 USD
View
B+
Retailer 13
-
$1,911 USD
View
B+
Retailer 14
-
$1,929 USD
View
B+
Retailer 15
-
$1,999 USD
View
B+
Retailer 16
-
$2,012 USD
View
B
Retailer 17
-
$2,275 USD
View
B
Retailer 18
-
$2,580 USD
View
B
Retailer 19
-
$3,026 USD
View
Most Expensive
C
NZ Jewellers
487f54e0-6499-4d20-a69f-4a5bfdf0dac6 · Nov 5
$4,225 USD
View
19 more retailers have this diamond
Prices start from $1,331 USDSave up to $2,894 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.

A
1.00ct Round
$1,331 USD