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Round|Natural|GIA

1.00ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 1493188319

Certificate GIA 1493188319

Diamond specifications and retailer prices

From $2,061 USD
As of November 6, 2026
Save $3,205 USD (61%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $5,266 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 top-tier cut grade and certified by GIA 1493188319. Listed at 19 retailers as of November 5, 2026, with prices from $2,061 to $5,266, a $3,205 spread on the same certified stone. NZ Jewellers lists it at $5,266. 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

1.00
Carat
J
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 1493188319
Dimensions6.39 × 6.36 × 3.99 mm
L/W Ratio1.00
Star length45%
Lower girdle75%
Key to symbols
Crystal, Cloud, Feather, Needle
Top View
6.39 mm6.36 mm1.00 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1493188319
Side View
Table 56.0%Crown 36.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.6%

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: $5,266 USD|Low: $1,755 USD|High: $5,266 USD|Avg: $2,877 USD
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
November 6, 2026
Retailer 10$2,106 USD
Retailer 9$2,110 USD
Retailer 3$2,282 USD
Retailer 13$2,282 USD
Retailer 5$2,285 USD
Retailer 12$2,387 USD
Retailer 4$2,633 USD
Retailer 2$2,649 USD
Retailer 11$2,821 USD
Retailer 6$2,965 USD
Retailer 7$3,074 USD
Retailer 8$4,413 USD
NZ Jewellers$5,266 USD

43 data points across 13 retailers

19 retailers$2,061 USD to $5,266 USD

B+
Cheapest Retailer
-
$2,061 USD
B+
Retailer 2
-
$2,106 USD
View
Final sale: no returns
B+
Retailer 3
-
$2,110 USD
View
B+
Retailer 4
-
$2,201 USD
View
B+
Retailer 5
-
$2,282 USD
View
Retailer 6
-
$2,282 USD
View
Price last confirmed 8 days ago
B+
Retailer 7
-
$2,285 USD
View
B+
Retailer 8
-
$2,332 USD
View
B
Retailer 9
-
$2,387 USD
View
B+
Retailer 10
-
$2,469 USD
View
B
Retailer 11
-
$2,633 USD
View
B
Retailer 12
-
$2,646 USD
View
B+
Retailer 13
-
$2,649 USD
View
B
Retailer 14
-
$2,667 USD
View
Retailer 15
-
$2,821 USD
View
Price last confirmed 30 days ago
B
Retailer 16
-
$2,965 USD
View
B
Retailer 17
-
$3,074 USD
View
B
Retailer 18
-
$4,413 USD
View
Most Expensive
B
NZ Jewellers
e7966b03-233a-4eb6-86cc-9d4bdb3f2631 · Nov 5
$5,266 USD
View
18 more retailers have this diamond
Prices start from $2,061 USDSave up to $3,205 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
$2,061 USD