CaratHunter
Plans
Round|Natural|GIA

0.66ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 2557966125

Certificate GIA 2557966125

Diamond specifications and retailer prices

From $978 CAD
₹66,642 INR
As of November 2, 2026
Save $3,097 CAD (76%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $4,075 CAD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 0.66ct natural round diamond

This 0.66ct natural round sits in the half to three-quarter carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2557966125. Listed at 13 retailers as of October 30, 2026, with prices from $978 to $4,075, a $3,097 spread on the same certified stone. NZ Jewellers lists it at $4,075. 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

0.66
Carat
H
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 2557966125
Dimensions5.58 × 5.55 × 3.49 mm
L/W Ratio1.01
Girdle conditionSlightly Thick
Top View
5.58 mm5.55 mm0.66 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2557966125
Side View
Table 56.0%Crown 35.5°Girdle: ThinPavilion 41.2°Culet: NoneDepth 62.7%

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 2
Current: $4,075 CAD|Low: $868 CAD|High: $4,075 CAD|Avg: $1,666 CAD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 3, 2026
Retailer 6$978 CAD
Retailer 4$1,017 CAD
Retailer 13$1,312 CAD
Retailer 10$1,314 CAD
Retailer 3$1,428 CAD
Retailer 12$1,486 CAD
Retailer 2$1,512 CAD
Retailer 7$1,681 CAD
Retailer 8$1,692 CAD
Retailer 5$1,851 CAD
Retailer 11$1,940 CAD
Retailer 9$2,380 CAD
NZ Jewellers$4,075 CAD

23 data points across 13 retailers

13 retailers$978 CAD to $4,075 CAD

A
Cheapest Retailer
-
$978 CAD
₹66,642 INR
A
Retailer 2
-
$1,017 CAD
$728 USD
View
Final sale: no returns
B+
Retailer 3
-
$1,312 CAD
$939 USD
View
B+
Retailer 4
-
$1,314 CAD
$940 USD
View
B+
Retailer 5
-
$1,428 CAD
$1,022 USD
View
B+
Retailer 6
-
$1,486 CAD
$1,063 USD
View
B+
Retailer 7
-
$1,512 CAD
£852 GBP
View
B+
Retailer 8
-
$1,681 CAD
£947 GBP
View
B+
Retailer 9
-
$1,692 CAD
€1,153 EUR
View
Retailer 10
-
$1,851 CAD
A$2,038 AUD
View
Price last confirmed 30 days ago
B
Retailer 11
-
$1,940 CAD
ZAR 22,433 ZAR
View
B
Retailer 12
-
$2,380 CAD
£1,341 GBP
View
Most Expensive
B
NZ Jewellers
32482787-982f-4cf7-b41c-92ed8cc2a066 · Oct 30
$4,075 CAD
$2,916 USD
View
12 more retailers have this diamond
Prices start from $978 CADSave up to $3,097 CAD

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
0.66ct Round
$978 CAD