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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 $7,742 SGD
As of November 5, 2026
Save $4,418 SGD (36%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $13,434 SGD 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
Colour
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: $13,434 SGD|Low: $7,304 SGD|High: $13,524 SGD|Avg: $9,823 SGD|-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$7,309 SGD
Retailer 7$7,946 SGD
Retailer 4$8,334 SGD
Retailer 16$8,362 SGD
Retailer 8$8,851 SGD
Retailer 15$9,066 SGD
Retailer 9$9,339 SGD
Retailer 13$9,479 SGD
Retailer 10$9,588 SGD
Retailer 3$9,830 SGD
Retailer 11$9,830 SGD
Retailer 14$10,150 SGD
Retailer 18$10,246 SGD
Retailer 12$10,776 SGD
Retailer 2$10,873 SGD
Retailer 5$11,105 SGD
Retailer 17$12,160 SGD
MOH London$13,434 SGD

27 data points across 18 retailers

21 retailers$7,742 SGD to $12,160 SGD

Retailer 1
-
$7,054 SGD
Price last confirmed 17 days ago
B+
Retailer 2
-
$7,742 SGD
View
Retailer 3
-
$7,838 SGD
View
Price last confirmed 36 days ago
Retailer 4
-
$7,946 SGD
View
Price last confirmed 19 days ago
B+
Retailer 5
-
$8,334 SGD
View
Final sale: no returns
B+
Retailer 6
-
$8,362 SGD
View
Retailer 7
-
$8,851 SGD
View
Price last confirmed 25 days ago
B+
Retailer 8
-
$9,066 SGD
View
Retailer 9
-
$9,339 SGD
View
Price last confirmed 33 days ago
B+
Retailer 10
-
$9,479 SGD
View
Retailer 11
-
$9,588 SGD
View
Price last confirmed 29 days ago
Retailer 12
-
$9,735 SGD
View
Price last confirmed 38 days ago
B
Retailer 13
-
$9,830 SGD
View
B
Retailer 14
-
$9,830 SGD
View
B+
Retailer 15
-
$10,150 SGD
View
B+
Retailer 16
-
$10,246 SGD
View
B
Retailer 17
-
$10,776 SGD
View
B
Retailer 18
-
$10,873 SGD
View
Retailer 19
-
$11,063 SGD
View
Price last confirmed 38 days ago
B
Retailer 20
-
$12,160 SGD
View
Most Expensive
MOH London
ADCE41C9E · Oct 21
$13,434 SGD
£8,254 GBP
View
Price last confirmed 16 days ago
20 more retailers have this diamond
Prices start from $7,742 SGDSave up to $4,418 SGD

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
$7,742 SGD