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Round|Natural|IGI

1.35ct K SI1 Round Natural Diamond

EX • K/SI1 • IGI 727584992

Shape and cutting style on the report: Round brilliant

Certificate IGI 727584992

Diamond specifications and retailer prices

From $2,358 AUD
As of November 5, 2026
Save $3,956 AUD (63%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $6,314 AUD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.35ct natural round diamond

This 1.35ct 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 727584992. Listed at 16 retailers as of November 5, 2026, with prices from $2,358 to $6,314, a $3,956 spread on the same certified stone. NZ Jewellers lists it at $6,314. 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

1.35
Carat
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.2°
Pavilion angle40.3°
OriginNatural
Grading LabIGI
CertificateIGI 727584992
Dimensions7.03 × 7.06 × 4.40 mm
L/W Ratio1.00
Culet sizePointed
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
7.03 mm7.06 mm1.35 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 727584992
Side View
Table 55.0%Crown 36.2°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 62.4%

Caratlytics Score

How it works →
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 5
Current: $3,510 AUD|Low: $2,358 AUD|High: $4,590 AUD|Avg: $2,950 AUD|+2.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 5, 2026
Retailer 8$2,358 AUD
Retailer 6$2,486 AUD
Retailer 2$2,588 AUD
Retailer 10$2,616 AUD
Retailer 7$2,671 AUD
Retailer 9$2,708 AUD
Retailer 4$2,907 AUD
Retailer 3$3,160 AUD
Retailer 1$3,510 AUD
Retailer 5$4,523 AUD

40 data points across 10 retailers

16 retailers$2,358 AUD to $6,314 AUD

A
Cheapest Retailer
-
$2,358 AUD
A
Retailer 2
-
$2,486 AUD
View
Retailer 3
-
$2,588 AUD
View
Price last confirmed 50 days ago
A
Retailer 4
-
$2,588 AUD
View
A
Retailer 5
-
$2,616 AUD
View
A
Retailer 6
-
$2,671 AUD
View
A
Retailer 7
-
$2,708 AUD
View
A
Retailer 8
-
$2,784 AUD
View
A
Retailer 9
-
$2,907 AUD
View
B+
Retailer 10
-
$2,987 AUD
View
Retailer 11
-
$2,987 AUD
View
Price last confirmed 48 days ago
A
Retailer 12
-
$3,160 AUD
View
A
Retailer 13
-
$3,510 AUD
View
B+
Retailer 14
-
$4,523 AUD
View
Retailer 15
-
$6,314 AUD
View
Price last confirmed 48 days ago
Most Expensive
B
NZ Jewellers
a4f82243-3331-48f7-94d8-37ea2e89a938 · Nov 5
$6,314 AUD
$4,420 USD
View
15 more retailers have this diamond
Prices start from $2,358 AUDSave up to $3,956 AUD

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
1.35ct Round
$2,358 AUD