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Round|Natural|IGI

1.33ct K SI1 Round Natural Diamond

EX • K/SI1 • IGI 685580930

Shape and cutting style on the report: Round brilliant

Certificate IGI 685580930

Diamond specifications and retailer prices

From $2,581 NZD
As of November 6, 2026
Save $3,198 NZD (55%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $8,188 NZD at NZ Jewellers · As of September 19, 2026
View at NZ Jewellers

About this 1.33ct natural round diamond

This 1.33ct natural round sits in the one-and-a-quarter to one-and-a-half carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI 685580930. Listed at 25 retailers as of November 2, 2026, with a 124% 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

1.33
Carat
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.4°
Pavilion angle41.1°
OriginNatural
Grading LabIGI
CertificateIGI 685580930
Dimensions6.96 × 6.93 × 4.40 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Top View
6.96 mm6.93 mm1.33 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 685580930
Side View
Table 58.0%Crown 36.4°Girdle: ThickPavilion 41.1°Culet: NoneDepth 63.3%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $2,581 NZD|Low: $2,581 NZD|High: $6,872 NZD|Avg: $3,818 NZD|-0.8%
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
November 6, 2026
Retailer 1$2,581 NZD
Retailer 3$2,944 NZD
Retailer 12$3,008 NZD
Retailer 13$3,060 NZD
Retailer 4$3,300 NZD
Retailer 11$3,389 NZD
Retailer 2$3,419 NZD
Retailer 5$3,602 NZD
Retailer 6$3,624 NZD
Retailer 7$3,828 NZD
Retailer 8$4,027 NZD
Retailer 9$4,389 NZD
Retailer 10$5,780 NZD

26 data points across 13 retailers

25 retailers$2,581 NZD to $5,780 NZD

A
Cheapest Retailer
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$2,581 NZD
Retailer 2
-
$2,944 NZD
View
Price last confirmed 12 days ago
A
Retailer 3
-
$3,008 NZD
View
Retailer 4
-
$3,177 NZD
View
Price last confirmed 12 days ago
Retailer 5
-
$3,300 NZD
View
Price last confirmed 8 days ago
Retailer 6
-
$3,300 NZD
View
Price last confirmed 15 days ago
A
Retailer 7
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$3,300 NZD
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Retailer 8
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$3,323 NZD
View
Price last confirmed 12 days ago
A
Retailer 9
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$3,389 NZD
View
Retailer 10
-
$3,419 NZD
View
Price last confirmed 11 days ago
A
Retailer 11
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$3,453 NZD
View
A
Retailer 12
-
$3,624 NZD
View
Retailer 13
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$3,752 NZD
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Price last confirmed 29 days ago
Retailer 14
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$3,752 NZD
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Price last confirmed 25 days ago
A
Retailer 15
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$3,828 NZD
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Retailer 16
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$3,917 NZD
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Price last confirmed 50 days ago
A
Retailer 17
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$4,027 NZD
View
Retailer 18
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$4,330 NZD
View
Price last confirmed 33 days ago
A
Retailer 19
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$4,389 NZD
View
Retailer 20
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$4,520 NZD
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Price last confirmed 45 days ago
B
Retailer 21
-
$5,780 NZD
View
Retailer 22
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$7,845 NZD
View
Price last confirmed 34 days ago
Retailer 23
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$7,845 NZD
View
Price last confirmed 26 days ago
Retailer 24
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$8,050 NZD
View
Price last confirmed 14 days ago
Most Expensive
NZ Jewellers
7280adbb-83f0-4888-86d9-acae6ef833e4 · Sep 19
$8,188 NZD
$4,603 USD
View
Price last confirmed 47 days ago
24 more retailers have this diamond
Prices start from $2,581 NZDSave up to $3,198 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
1.33ct Round
$2,581 NZD