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Round|Natural|GIA

1.31ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 1555498269

Certificate GIA 1555498269

Diamond specifications and retailer prices

From $4,221 NZD
$2,375 USD
As of October 27, 2026
Save $4,589 NZD (52%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $11,000 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 1555498269. Listed at 10 retailers as of October 26, 2026, with a 109% 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
FluorescenceNone
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1555498269
Dimensions6.95 × 6.90 × 4.34 mm
L/W Ratio1.01
Girdle conditionSlightly Thick
Culet sizeNone
Key to symbols
Crystal, Cloud, Needle
Top View
6.95 mm6.90 mm1.31 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1555498269
Side View
Table 58.0%Crown 36°Girdle: Slightly ThickPavilion 40.8°Culet: NoneDepth 62.7%

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 27
Current: $5,078 NZD|Low: $3,830 NZD|High: $8,905 NZD|Avg: $5,513 NZD|-1.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 27, 2026
Retailer 7$4,214 NZD
Retailer 6$4,310 NZD
Retailer 2$4,767 NZD
Retailer 9$4,767 NZD
Retailer 8$4,950 NZD
Retailer 1$5,078 NZD
Retailer 10$5,499 NZD
Retailer 3$5,612 NZD
Retailer 5$5,824 NZD
Retailer 4$8,810 NZD

32 data points across 10 retailers

10 retailers$4,221 NZD to $8,810 NZD

A
Cheapest Retailer
-
$4,221 NZD
$2,375 USD
A
Retailer 2
-
$4,310 NZD
$2,425 USD
View
Retailer 3
-
$4,767 NZD
$2,682 USD
View
Price last confirmed 25 days ago
Retailer 4
-
$4,950 NZD
$2,785 USD
View
Price last confirmed 18 days ago
B+
Retailer 5
-
$5,078 NZD
£2,250 GBP
View
Retailer 6
-
$5,499 NZD
$3,094 USD
View
Price last confirmed 24 days ago
B+
Retailer 7
-
$5,612 NZD
£2,486 GBP
View
B+
Retailer 8
-
$5,824 NZD
€3,121 EUR
View
B
Retailer 9
-
$8,810 NZD
£3,903 GBP
View
Most Expensive
NZ Jewellers
05532b95-2200-4cdd-9b32-18a1717acf14 · Sep 28
$11,000 NZD
$6,189 USD
View
Price last confirmed 35 days ago
9 more retailers have this diamond
Prices start from $4,221 NZDSave up to $4,589 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
$4,221 NZD