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Round|Natural|GIA

1.33ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 3535007950

Certificate GIA 3535007950

Diamond specifications and retailer prices

From $3,221 AUD
As of November 5, 2026
Save $2,620 AUD (45%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $6,990 AUD at NZ Jewellers · As of September 26, 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 GIA 3535007950. Listed at 10 retailers as of November 4, 2026, with a 81% 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
FluorescenceFaint
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 3535007950
Dimensions7.03 × 6.99 × 4.33 mm
L/W Ratio1.01
Star length50%
Top View
7.03 mm6.99 mm1.33 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 3535007950
Side View
Table 59.0%Crown 36°GirdlePavilion 40.6°Culet: NoneDepth 61.9%

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: Nov 5
Current: $4,080 AUD|Low: $3,221 AUD|High: $6,350 AUD|Avg: $4,235 AUD|+2.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 5, 2026
Retailer 5$3,221 AUD
Retailer 3$3,613 AUD
Retailer 1$4,080 AUD
Retailer 2$4,148 AUD
Retailer 4$5,841 AUD

42 data points across 5 retailers

10 retailers$3,221 AUD to $5,841 AUD

A
Cheapest Retailer
-
$3,221 AUD
Retailer 2
-
$3,344 AUD
View
Price last confirmed 29 days ago
Retailer 3
-
$3,344 AUD
View
Price last confirmed 29 days ago
Retailer 4
-
$3,498 AUD
View
Price last confirmed 38 days ago
A
Retailer 5
-
$3,613 AUD
View
Retailer 6
-
$3,858 AUD
View
Price last confirmed 38 days ago
B+
Retailer 7
-
$4,080 AUD
View
B+
Retailer 8
-
$4,148 AUD
View
B
Retailer 9
-
$5,841 AUD
View
Most Expensive
NZ Jewellers
8099c4c9-5861-4011-9261-1112a73341e9 · Sep 26
$6,990 AUD
$4,893 USD
View
Price last confirmed 40 days ago
9 more retailers have this diamond
Prices start from $3,221 AUDSave up to $2,620 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
1.33ct Round
$3,221 AUD