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Round|Natural|GIA

1.31ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 5242051546

Certificate GIA 5242051546

Diamond specifications and retailer prices

From $3,691 NZD
$2,080 USD
As of October 26, 2026
Save $2,378 NZD (39%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $8,403 NZD at NZ Jewellers · As of September 28, 2026
View at NZ Jewellers

About this 1.31ct natural round diamond

This 1.31ct natural round sits in the one-and-a-quarter to one-and-a-half carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5242051546. Listed at 8 retailers as of October 26, 2026, with a 64% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.31
Carat
J
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle35°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 5242051546
Dimensions7.01 × 6.97 × 4.38 mm
L/W Ratio1.01
Star length50%
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Needle
Top View
7.01 mm6.97 mm1.31 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 5242051546
Side View
Table 57.0%Crown 35°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 62.6%

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: Oct 26
Current: $4,706 NZD|Low: $3,691 NZD|High: $6,109 NZD|Avg: $4,811 NZD|+2.9%
Retailer 1
Retailer 2
Retailer 3
October 30, 2026
Retailer 3$3,691 NZD
Retailer 1$4,706 NZD
Retailer 2$6,068 NZD

20 data points across 3 retailers

8 retailers$3,691 NZD to $6,068 NZD

Retailer 1
-
$3,446 NZD
$1,942 USD
Price last confirmed 25 days ago
Retailer 2
-
$3,446 NZD
$1,942 USD
View
Price last confirmed 25 days ago
Retailer 3
-
$3,604 NZD
$2,031 USD
View
Price last confirmed 33 days ago
A
Retailer 4
-
$3,691 NZD
$2,080 USD
View
Retailer 5
-
$3,974 NZD
$2,240 USD
View
Price last confirmed 34 days ago
B+
Retailer 6
-
$4,706 NZD
€2,526 EUR
View
B+
Retailer 7
-
$6,068 NZD
£2,693 GBP
View
Most Expensive
NZ Jewellers
5bb757d6-d4cb-4a15-ace3-82d350757074 · Sep 28
$8,403 NZD
$4,736 USD
View
Price last confirmed 35 days ago
7 more retailers have this diamond
Prices start from $3,691 NZDSave up to $2,378 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
1.31ct Round
$3,691 NZD