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Round|Natural|GIA

1.31ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 1555526554

Certificate GIA 1555526554

Diamond specifications and retailer prices

From $6,556 NZD
$3,695 USD
As of November 1, 2026
Save $5,025 NZD (43%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $11,581 NZD at Wholesale Diamonds Direct · As of October 26, 2026
View at Wholesale Diamonds Direct

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 1555526554. Listed at 14 retailers as of October 26, 2026, with prices from $6,556 to $11,581, a $5,025 spread on the same certified stone. Wholesale Diamonds Direct lists it at $11,581. 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
OriginNatural
Grading LabGIA
CertificateGIA 1555526554
Dimensions6.94 × 6.98 × 4.34 mm
L/W Ratio1.01
Top View
6.94 mm6.98 mm1.31 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1555526554
Side View
Table 59.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 62.4%

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: $8,127 NZD|Low: $4,259 NZD|High: $11,581 NZD|Avg: $7,581 NZD|+28.4%
Retailer 1
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
Wholesale Diamonds Direct
November 2, 2026
Retailer 8$4,259 NZD
Retailer 6$5,617 NZD
Retailer 9$5,784 NZD
Retailer 4$6,279 NZD
Retailer 7$6,512 NZD
Retailer 16$6,556 NZD
Retailer 15$7,079 NZD
Retailer 2$7,887 NZD
Retailer 1$8,127 NZD
Retailer 12$8,392 NZD
Retailer 14$8,392 NZD
Retailer 10$8,510 NZD
Retailer 3$8,586 NZD
Retailer 13$8,676 NZD
Retailer 17$9,182 NZD
Retailer 11$10,111 NZD
Retailer 5$10,181 NZD
Wholesale Diamonds Direct$11,581 NZD

24 data points across 18 retailers

14 retailers$6,556 NZD to $11,581 NZD

Retailer 1
-
$6,512 NZD
A$5,646 AUD
Price last confirmed 37 days ago
A
Retailer 2
-
$6,556 NZD
$3,695 USD
View
B+
Retailer 3
-
$7,079 NZD
$3,990 USD
View
B+
Retailer 4
-
$7,887 NZD
$4,445 USD
View
B+
Retailer 5
-
$8,127 NZD
£3,606 GBP
View
B+
Retailer 6
-
$8,392 NZD
$4,730 USD
View
B+
Retailer 7
-
$8,392 NZD
$4,730 USD
View
B+
Retailer 8
-
$8,510 NZD
€4,568 EUR
View
B
Retailer 9
-
$8,586 NZD
$4,839 USD
View
B
Retailer 10
-
$8,676 NZD
$4,890 USD
View
B
Retailer 11
-
$9,182 NZD
£4,075 GBP
View
B
Retailer 12
-
$10,111 NZD
ZAR 92,057 ZAR
View
Retailer 13
-
$10,493 NZD
$5,914 USD
View
Price last confirmed 36 days ago
Most Expensive
B
Wholesale Diamonds Direct
559978621 · Oct 26
$11,581 NZD
$6,527 USD
View
13 more retailers have this diamond
Prices start from $6,556 NZDSave up to $5,025 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
$6,556 NZD