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Radiant|Natural|GIA

1.23ct J SI1 Radiant Natural Diamond

VG • J/SI1 • GIA 5221183892

Certificate GIA 5221183892

Diamond specifications and retailer prices

From $6,409 NZD
As of November 5, 2026
Save $4,480 NZD (41%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $10,889 NZD at MOH London · As of November 4, 2026
View at MOH London

About this 1.23ct natural radiant diamond

This 1.23ct natural radiant sits in the classic one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 5221183892. Listed at 7 retailers as of November 4, 2026, with prices from $6,409 to $10,889, a $4,480 spread on the same certified stone. MOH London lists it at $10,889. 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

1.23
Carat
J
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5221183892
Dimensions6.30 × 5.59 × 4.00 mm
L/W Ratio1.13
Top View
6.30 mm5.59 mm1.23 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryGood
FluorescenceNone
CertificateGIA 5221183892
Side View
Table 60.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 71.6%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $10,889 NZD|Low: $6,409 NZD|High: $11,049 NZD|Avg: $7,563 NZD|-0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 7, 2026
Retailer 4$6,409 NZD
Retailer 5$6,765 NZD
Retailer 6$6,765 NZD
Retailer 2$6,821 NZD
Retailer 3$7,600 NZD
MOH London$10,889 NZD

43 data points across 6 retailers

7 retailers$6,409 NZD to $10,889 NZD

B
Cheapest Retailer
-
$6,409 NZD
B
Retailer 2
-
$6,765 NZD
View
B
Retailer 3
-
$6,765 NZD
View
B
Retailer 4
-
$6,821 NZD
View
B
Retailer 5
-
$6,999 NZD
View
B
Retailer 6
-
$7,600 NZD
View
Most Expensive
C
MOH London
79FB9A471 · Nov 4
$10,889 NZD
£4,753 GBP
View
6 more retailers have this diamond
Prices start from $6,409 NZDSave up to $4,480 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.

B
1.23ct Radiant
$6,409 NZD