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Round|Natural|GIA

1.31ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 5242048140

Certificate GIA 5242048140

Diamond specifications and retailer prices

From $5,894 NZD
$3,322 USD
As of October 30, 2026
Save $5,578 NZD (49%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $11,473 NZD at NZ Jewellers · As of October 30, 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5242048140. Listed at 16 retailers as of October 30, 2026, with prices from $5,894 to $11,473, a $5,578 spread on the same certified stone. NZ Jewellers lists it at $11,473. 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
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 5242048140
Dimensions6.91 × 6.96 × 4.36 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Crystal, Cloud, Needle
Top View
6.91 mm6.96 mm1.31 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5242048140
Side View
Table 57.0%Crown 35.5°Girdle: Slightly ThickPavilion 41°Culet: NoneDepth 62.9%

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 30
Current: $11,473 NZD|Low: $5,894 NZD|High: $11,757 NZD|Avg: $7,374 NZD|-1.6%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
November 1, 2026
Retailer 7$5,894 NZD
Retailer 2$5,935 NZD
Retailer 5$6,077 NZD
Retailer 15$6,317 NZD
Retailer 8$6,336 NZD
Retailer 4$6,584 NZD
Retailer 14$6,584 NZD
Retailer 3$6,838 NZD
Retailer 11$6,841 NZD
Retailer 13$6,844 NZD
Retailer 6$7,598 NZD
Retailer 10$7,677 NZD
Retailer 12$8,094 NZD
Retailer 9$11,012 NZD
NZ Jewellers$11,473 NZD

21 data points across 15 retailers

16 retailers$5,894 NZD to $11,473 NZD

A
Cheapest Retailer
-
$5,894 NZD
$3,322 USD
A
Retailer 2
-
$5,935 NZD
$3,345 USD
View
A
Retailer 3
-
$6,077 NZD
$3,425 USD
View
Final sale: no returns
A
Retailer 4
-
$6,317 NZD
$3,560 USD
View
A
Retailer 5
-
$6,336 NZD
£2,812 GBP
View
A
Retailer 6
-
$6,584 NZD
$3,711 USD
View
A
Retailer 7
-
$6,584 NZD
$3,711 USD
View
A
Retailer 8
-
$6,838 NZD
$3,854 USD
View
A
Retailer 9
-
$6,841 NZD
£3,036 GBP
View
A
Retailer 10
-
$6,844 NZD
$3,857 USD
View
Retailer 11
-
$7,403 NZD
A$6,419 AUD
View
Price last confirmed 24 days ago
B+
Retailer 12
-
$7,598 NZD
$4,282 USD
View
B+
Retailer 13
-
$7,677 NZD
€4,121 EUR
View
B+
Retailer 14
-
$8,094 NZD
ZAR 73,698 ZAR
View
B
Retailer 15
-
$11,012 NZD
£4,887 GBP
View
Most Expensive
B
NZ Jewellers
af681540-d975-4968-b9cb-2aa49efd98e6 · Oct 30
$11,473 NZD
$6,466 USD
View
15 more retailers have this diamond
Prices start from $5,894 NZDSave up to $5,578 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
$5,894 NZD