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Round|Natural|GIA

1.31ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 6531246335

Certificate GIA 6531246335

Diamond specifications and retailer prices

From $4,928 NZD
HK$21,700 HKD
As of November 1, 2026
Save $6,165 NZD (56%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $11,093 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 6531246335. Listed at 24 retailers as of October 30, 2026, with prices from $4,928 to $11,093, a $6,165 spread on the same certified stone. NZ Jewellers lists it at $11,093. 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 angle36°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 6531246335
Dimensions6.95 × 6.91 × 4.34 mm
L/W Ratio1.01
Top View
6.95 mm6.91 mm1.31 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6531246335
Side View
Table 59.0%Crown 36°Girdle: STK-STKPavilion 41°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: Nov 1
Current: $11,093 NZD|Low: $4,883 NZD|High: $11,093 NZD|Avg: $6,762 NZD
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
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
Retailer 23
November 1, 2026
Retailer 21$4,928 NZD
Retailer 2$4,943 NZD
Retailer 7$5,488 NZD
Retailer 4$5,651 NZD
Retailer 15$5,681 NZD
Retailer 6$5,876 NZD
Retailer 3$6,066 NZD
Retailer 9$6,121 NZD
Retailer 13$6,127 NZD
Retailer 22$6,306 NZD
Retailer 8$6,368 NZD
Retailer 12$6,368 NZD
Retailer 14$6,387 NZD
Retailer 10$6,613 NZD
Retailer 19$6,614 NZD
Retailer 5$6,625 NZD
Retailer 16$6,937 NZD
Retailer 18$7,219 NZD
Retailer 23$7,347 NZD
Retailer 20$7,827 NZD
Retailer 11$9,251 NZD
Retailer 17$10,649 NZD
NZ Jewellers$11,093 NZD

25 data points across 23 retailers

24 retailers$4,928 NZD to $11,093 NZD

A
Cheapest Retailer
-
$4,928 NZD
HK$21,700 HKD
A
Retailer 2
-
$4,943 NZD
₹265,322 INR
View
A
Retailer 3
-
$5,488 NZD
A$4,759 AUD
View
A
Retailer 4
-
$5,651 NZD
$3,185 USD
View
A
Retailer 5
-
$5,876 NZD
$3,312 USD
View
Final sale: no returns
A
Retailer 6
-
$6,066 NZD
$3,419 USD
View
A
Retailer 7
-
$6,121 NZD
$3,450 USD
View
A
Retailer 8
-
$6,127 NZD
£2,719 GBP
View
Retailer 9
-
$6,302 NZD
SGD 4,800 SGD
View
Price last confirmed 14 days ago
A
Retailer 10
-
$6,306 NZD
$3,554 USD
View
A
Retailer 11
-
$6,368 NZD
$3,589 USD
View
A
Retailer 12
-
$6,368 NZD
$3,589 USD
View
A
Retailer 13
-
$6,387 NZD
$3,600 USD
View
B+
Retailer 14
-
$6,613 NZD
$3,727 USD
View
A
Retailer 15
-
$6,614 NZD
£2,935 GBP
View
B+
Retailer 16
-
$6,625 NZD
$3,734 USD
View
Retailer 17
-
$6,937 NZD
A$6,015 AUD
View
Price last confirmed 24 days ago
B+
Retailer 18
-
$7,219 NZD
€3,875 EUR
View
B+
Retailer 19
-
$7,347 NZD
$4,141 USD
View
B+
Retailer 20
-
$7,827 NZD
ZAR 71,261 ZAR
View
B
Retailer 21
-
$9,251 NZD
$5,214 USD
View
Retailer 22
-
$9,670 NZD
$5,450 USD
View
Price last confirmed 16 days ago
B
Retailer 23
-
$10,649 NZD
£4,726 GBP
View
Most Expensive
B
NZ Jewellers
2489d398-abfa-48ac-8047-ea7eccc10bf1 · Oct 30
$11,093 NZD
$6,252 USD
View
23 more retailers have this diamond
Prices start from $4,928 NZDSave up to $6,165 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
$4,928 NZD