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Round|Natural|GIA

1.00ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 1568153979

Certificate GIA 1568153979

Diamond specifications and retailer prices

From $1,397 USD
As of November 6, 2026
Save $2,087 USD (60%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $3,484 USD at MOH London · As of November 4, 2026
View at MOH London

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 1568153979. Listed at 9 retailers as of November 4, 2026, with prices from $1,397 to $3,484, a $2,087 spread on the same certified stone. MOH London lists it at $3,484. 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
FluorescenceNone
Crown angle35°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 1568153979
Dimensions6.38 × 6.42 × 3.98 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Etch Channel, Needle
Top View
6.38 mm6.42 mm1.00 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1568153979
Side View
Table 58.0%Crown 35°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 62.2%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $3,484 USD|Low: $1,397 USD|High: $3,531 USD|Avg: $2,337 USD|-1.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 2$1,397 USD
Retailer 3$1,770 USD
Retailer 4$2,025 USD
Retailer 5$2,381 USD
Retailer 6$2,433 USD
MOH London$3,484 USD

30 data points across 6 retailers

9 retailers$1,397 USD to $3,484 USD

A
Cheapest Retailer
-
$1,397 USD
A
Retailer 2
-
$1,770 USD
View
B+
Retailer 3
-
$1,796 USD
View
B+
Retailer 4
-
$2,025 USD
View
B+
Retailer 5
-
$2,030 USD
View
B+
Retailer 6
-
$2,381 USD
View
B
Retailer 7
-
$2,433 USD
View
Retailer 8
-
$2,458 USD
View
Price last confirmed 32 days ago
Most Expensive
B
MOH London
5F94434A1 · Nov 4
$3,484 USD
£2,743 GBP
View
8 more retailers have this diamond
Prices start from $1,397 USDSave up to $2,087 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
$1,397 USD