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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 $2,520 NZD
As of November 6, 2026
Save $3,764 NZD (60%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $6,284 NZD 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 $2,520 to $6,284, a $3,764 spread on the same certified stone. MOH London lists it at $6,284. 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
Colour
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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $6,284 NZD|Low: $2,520 NZD|High: $6,369 NZD|Avg: $4,120 NZD|-1.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 3$2,520 NZD
Retailer 4$3,193 NZD
Retailer 2$3,242 NZD
Retailer 5$3,653 NZD
Retailer 6$4,295 NZD
Retailer 7$4,389 NZD
MOH London$6,284 NZD

29 data points across 7 retailers

9 retailers$2,520 NZD to $6,284 NZD

A
Cheapest Retailer
-
$2,520 NZD
A
Retailer 2
-
$3,193 NZD
View
B+
Retailer 3
-
$3,242 NZD
View
B+
Retailer 4
-
$3,653 NZD
View
B+
Retailer 5
-
$3,662 NZD
View
B+
Retailer 6
-
$4,295 NZD
View
B
Retailer 7
-
$4,389 NZD
View
Retailer 8
-
$4,434 NZD
View
Price last confirmed 32 days ago
Most Expensive
B
MOH London
5F94434A1 · Nov 4
$6,284 NZD
£2,743 GBP
View
8 more retailers have this diamond
Prices start from $2,520 NZDSave up to $3,764 NZD

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
$2,520 NZD