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Round|Natural|GIA

1.55ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 1533953411

Certificate GIA 1533953411

Diamond specifications and retailer prices

From $4,152 SGD
As of November 6, 2026
Save $3,049 SGD (42%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $7,523 SGD at NZ Jewellers · As of September 28, 2026
View at NZ Jewellers

About this 1.55ct natural round diamond

This 1.55ct natural round sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1533953411. Listed at 11 retailers as of November 4, 2026, with a 73% 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
J
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle35.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1533953411
Dimensions7.41 × 7.35 × 4.60 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Culet sizeNone
Key to symbols
Crystal, Needle
Top View
7.41 mm7.35 mm1.55 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 1533953411
Side View
Table 57.0%Crown 35.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.3%

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 6
Current: $4,441 SGD|Low: $3,731 SGD|High: $7,297 SGD|Avg: $4,858 SGD|+1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 8$3,731 SGD
Retailer 5$4,152 SGD
Retailer 3$4,407 SGD
Retailer 1$4,441 SGD
Retailer 6$4,627 SGD
Retailer 7$4,634 SGD
Retailer 2$5,270 SGD
Retailer 4$7,201 SGD

35 data points across 8 retailers

11 retailers$4,152 SGD to $7,201 SGD

A
Cheapest Retailer
-
$4,152 SGD
Retailer 2
-
$4,318 SGD
View
Price last confirmed 36 days ago
A
Retailer 3
-
$4,407 SGD
View
A
Retailer 4
-
$4,441 SGD
View
Retailer 5
-
$4,484 SGD
View
Price last confirmed 38 days ago
Retailer 6
-
$4,627 SGD
View
Price last confirmed 11 days ago
Retailer 7
-
$4,634 SGD
View
Price last confirmed 34 days ago
Retailer 8
-
$4,983 SGD
View
Price last confirmed 38 days ago
B+
Retailer 9
-
$5,270 SGD
View
B
Retailer 10
-
$7,201 SGD
View
Most Expensive
NZ Jewellers
d46d6bf8-ab55-442a-b520-0a66a8d004ea · Sep 28
$7,523 SGD
$5,870 USD
View
Price last confirmed 39 days ago
10 more retailers have this diamond
Prices start from $4,152 SGDSave up to $3,049 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.

A
1.55ct Round
$4,152 SGD