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Round|Natural|GIA

2.66ct H SI1 Round Natural Diamond

EX • H/SI1

Diamond specifications and retailer prices

From $29,224 AUD
$20,481 USD
As of November 2, 2026
Save $17,351 AUD (37%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $46,575 AUD at NZ Jewellers · As of November 2, 2026
View at NZ Jewellers

About this 2.66ct natural round diamond

This 2.66ct natural round sits in the two to three carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA. Listed at 13 retailers as of November 2, 2026, with prices from $29,224 to $46,575, a $17,351 spread on the same certified stone. NZ Jewellers lists it at $46,575. 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

2.66
Carat
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
Dimensions9.01 × 9.07 × 5.41 mm
L/W Ratio1.01
Top View
9.01 mm9.07 mm2.66 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA
Side View
Table 59.0%CrownGirdle: ThinPavilionCulet: NoneDepth 59.8%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $46,575 AUD|Low: $28,936 AUD|High: $46,575 AUD|Avg: $35,569 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 9$29,224 AUD
Retailer 3$31,843 AUD
Retailer 4$32,877 AUD
Retailer 8$34,203 AUD
Retailer 5$34,521 AUD
Retailer 6$35,617 AUD
Retailer 10$36,764 AUD
Retailer 2$36,781 AUD
Retailer 7$36,987 AUD
Retailer 11$39,488 AUD
NZ Jewellers$46,575 AUD

31 data points across 11 retailers

13 retailers$29,224 AUD to $46,575 AUD

B+
Cheapest Retailer
-
$29,224 AUD
$20,481 USD
B+
Retailer 2
-
$31,843 AUD
CA$30,995 CAD
View
B+
Retailer 3
-
$32,877 AUD
$23,041 USD
View
B+
Retailer 4
-
$34,203 AUD
$23,970 USD
View
B+
Retailer 5
-
$34,521 AUD
$24,193 USD
View
B
Retailer 6
-
$35,617 AUD
$24,961 USD
View
B
Retailer 7
-
$36,764 AUD
$25,765 USD
View
B
Retailer 8
-
$36,781 AUD
£20,297 GBP
View
B
Retailer 9
-
$36,987 AUD
$25,921 USD
View
Retailer 10
-
$38,254 AUD
$26,809 USD
View
Price last confirmed 52 days ago
B
Retailer 11
-
$39,488 AUD
$27,674 USD
View
Retailer 12
-
$39,725 AUD
$27,840 USD
View
Price last confirmed 57 days ago
Most Expensive
B
NZ Jewellers
bd60fdf9-aff0-4589-916b-e9535713f85c · Nov 2
$46,575 AUD
$32,641 USD
View
12 more retailers have this diamond
Prices start from $29,224 AUDSave up to $17,351 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+
2.66ct Round
$29,224 AUD