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Radiant|Natural|GIA

1.30ct J SI1 Radiant Natural Diamond

GD • J/SI1 • GIA 6224142139

Certificate GIA 6224142139

Diamond specifications and retailer prices

From $5,599 NZD
As of November 6, 2026
Save $2,565 NZD (31%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $12,135 NZD at MOH London · As of October 25, 2026
View at MOH London

About this 1.3ct natural radiant diamond

This 1.3ct natural radiant sits in the one-and-a-quarter to one-and-a-half carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6224142139. Listed at 8 retailers as of November 4, 2026, with a 46% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.30
Carat
J
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.84°
Pavilion angle31.69°
OriginNatural
Grading LabGIA
CertificateGIA 6224142139
Dimensions7.69 × 5.45 × 3.53 mm
L/W Ratio1.41
Top View
7.69 mm5.45 mm1.30 ctJ / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6224142139
Side View
Table 70.0%Crown 44.84°Girdle: MediumPavilion 31.69°Culet: NoneDepth 64.8%

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: $12,135 NZD|Low: $5,599 NZD|High: $12,135 NZD|Avg: $7,411 NZD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 5$5,599 NZD
Retailer 6$5,828 NZD
Retailer 8$6,568 NZD
Retailer 2$7,340 NZD
Retailer 4$7,614 NZD
Retailer 3$8,164 NZD
Retailer 7$8,202 NZD
MOH London$12,135 NZD

7 data points across 8 retailers

8 retailers$5,599 NZD to $8,164 NZD

B+
Cheapest Retailer
-
$5,599 NZD
B+
Retailer 2
-
$5,828 NZD
View
B+
Retailer 3
-
$6,568 NZD
View
B
Retailer 4
-
$7,340 NZD
View
Retailer 5
-
$7,614 NZD
View
Price last confirmed 44 days ago
B
Retailer 6
-
$8,164 NZD
View
Retailer 7
-
$8,202 NZD
View
Price last confirmed 45 days ago
Most Expensive
MOH London
0237BB3A1 · Oct 25
$12,135 NZD
£5,297 GBP
View
Price last confirmed 13 days ago
7 more retailers have this diamond
Prices start from $5,599 NZDSave up to $2,565 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+
1.30ct Radiant
$5,599 NZD