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Round|Natural|GIA

1.33ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 1199087302

Certificate GIA 1199087302

Diamond specifications and retailer prices

From $6,444 AUD
As of November 5, 2026
Save $187 AUD (3%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $6,631 AUD at 77 Diamonds · As of November 5, 2026
View at 77 Diamonds

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 1199087302. Listed at 2 retailers as of November 5, 2026, with a relatively tight 3% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 1199087302
Dimensions6.97 × 7.02 × 4.40 mm
L/W Ratio1.01
Top View
6.97 mm7.02 mm1.33 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 1199087302
Side View
Table 56.0%CrownGirdlePavilionCuletDepth 62.8%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 5
Current: $6,631 AUD|Low: $6,187 AUD|High: $6,741 AUD|Avg: $6,547 AUD|+0.8%
77 Diamonds
Retailer 2
November 5, 2026
Retailer 2$6,444 AUD
77 Diamonds$6,631 AUD

35 data points across 2 retailers

2 retailers$6,444 AUD to $6,631 AUD

B
Cheapest Retailer
-
$6,444 AUD
Most Expensive
B
77 Diamonds
RBMBEBDMTGJS · Nov 5
$6,631 AUD
£3,655 GBP
View
1 more retailer has this diamond
Prices start from $6,444 AUDSave up to $187 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.

B
1.33ct Round
$6,444 AUD