Round|Natural|GIA

2.66ct H SI1 Round Natural Diamond

EX • H/SI1

Diamond specifications and retailer prices

From $20,481 USD
As of November 2, 2026
Save $12,160 USD (37%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $32,641 USD at NZ Jewellers · As of October 30, 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 October 30, 2026, with prices from $20,481 to $32,641, a $12,160 spread on the same certified stone. NZ Jewellers lists it at $32,641. 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
Color
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $32,641 USD|Low: $20,279 USD|High: $32,641 USD|Avg: $24,928 USD
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$20,481 USD
Retailer 3$22,316 USD
Retailer 4$23,041 USD
Retailer 8$23,970 USD
Retailer 5$24,193 USD
Retailer 6$24,961 USD
Retailer 10$25,765 USD
Retailer 2$25,777 USD
Retailer 7$25,921 USD
Retailer 11$27,674 USD
NZ Jewellers$32,641 USD

31 data points across 11 retailers

13 retailers$20,481 USD to $32,641 USD

B+
Cheapest Retailer
-
$20,481 USD
B+
Retailer 2
-
$22,316 USD
CA$30,995 CAD
View
B+
Retailer 3
-
$23,041 USD
View
B+
Retailer 4
-
$23,970 USD
View
B+
Retailer 5
-
$24,193 USD
View
B
Retailer 6
-
$24,961 USD
View
B
Retailer 7
-
$25,765 USD
View
B
Retailer 8
-
$25,777 USD
£20,297 GBP
View
B
Retailer 9
-
$25,921 USD
View
Retailer 10
-
$26,809 USD
View
Price last confirmed 52 days ago
B
Retailer 11
-
$27,674 USD
View
Retailer 12
-
$27,840 USD
View
Price last confirmed 57 days ago
Most Expensive
B
NZ Jewellers
bd60fdf9-aff0-4589-916b-e9535713f85c · Oct 30
$32,641 USD
View
12 more retailers have this diamond
Prices start from $20,481 USDSave up to $12,160 USD

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
$20,481 USD