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Round|Natural|GIA

1.55ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 1553168978

Certificate GIA 1553168978

Diamond specifications and retailer prices

From $8,437 CAD
As of November 5, 2026
Save $4,814 CAD (36%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $14,640 CAD at MOH London · As of October 21, 2026
View at MOH London

About this 1.55ct natural round diamond

This 1.55ct natural round sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1553168978. Listed at 21 retailers as of November 5, 2026, with a 57% 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

1.55
Carat
H
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 1553168978
Dimensions7.56 × 7.60 × 4.51 mm
L/W Ratio1.01
Girdle conditionThin to Medium
Culet sizeNone
Top View
7.56 mm7.60 mm1.55 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1553168978
Side View
Table 62.0%Crown 33.5°Girdle: THN-MEDPavilion 41.6°Culet: NoneDepth 59.4%

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 5
Current: $14,640 CAD|Low: $7,959 CAD|High: $14,738 CAD|Avg: $10,704 CAD|-0.7%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 6, 2026
Retailer 6$7,965 CAD
Retailer 7$8,659 CAD
Retailer 4$9,082 CAD
Retailer 16$9,113 CAD
Retailer 8$9,645 CAD
Retailer 15$9,880 CAD
Retailer 9$10,177 CAD
Retailer 13$10,329 CAD
Retailer 10$10,448 CAD
Retailer 3$10,712 CAD
Retailer 11$10,712 CAD
Retailer 14$11,061 CAD
Retailer 18$11,166 CAD
Retailer 12$11,743 CAD
Retailer 2$11,849 CAD
Retailer 5$12,102 CAD
Retailer 17$13,251 CAD
MOH London$14,640 CAD

27 data points across 18 retailers

21 retailers$8,437 CAD to $13,251 CAD

Retailer 1
-
$7,687 CAD
Price last confirmed 17 days ago
B+
Retailer 2
-
$8,437 CAD
View
Retailer 3
-
$8,542 CAD
View
Price last confirmed 36 days ago
Retailer 4
-
$8,659 CAD
View
Price last confirmed 19 days ago
B+
Retailer 5
-
$9,082 CAD
View
Final sale: no returns
B+
Retailer 6
-
$9,113 CAD
View
Retailer 7
-
$9,645 CAD
View
Price last confirmed 25 days ago
B+
Retailer 8
-
$9,880 CAD
View
Retailer 9
-
$10,177 CAD
View
Price last confirmed 33 days ago
B+
Retailer 10
-
$10,329 CAD
View
Retailer 11
-
$10,448 CAD
View
Price last confirmed 29 days ago
Retailer 12
-
$10,609 CAD
View
Price last confirmed 38 days ago
B
Retailer 13
-
$10,712 CAD
View
B
Retailer 14
-
$10,712 CAD
View
B+
Retailer 15
-
$11,061 CAD
View
B+
Retailer 16
-
$11,166 CAD
View
B
Retailer 17
-
$11,743 CAD
View
B
Retailer 18
-
$11,849 CAD
View
Retailer 19
-
$12,055 CAD
View
Price last confirmed 38 days ago
B
Retailer 20
-
$13,251 CAD
View
Most Expensive
MOH London
ADCE41C9E · Oct 21
$14,640 CAD
£8,254 GBP
View
Price last confirmed 16 days ago
20 more retailers have this diamond
Prices start from $8,437 CADSave up to $4,814 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.

B+
1.55ct Round
$8,437 CAD