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Round|Natural|GIA

0.55ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 6551409149

Certificate GIA 6551409149

Diamond specifications and retailer prices

From $778 SGD
As of November 4, 2026
Save $1,062 SGD (58%) vs most expensive(unlock to see where)
26 retailers carry this diamond
Most expensive: $3,157 SGD at NZ Jewellers · As of October 17, 2026
View at NZ Jewellers

About this 0.55ct natural round diamond

This 0.55ct natural round sits in the half to three-quarter carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6551409149. Listed at 26 retailers as of November 4, 2026, with a 137% 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

0.55
Carat
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6551409149
Dimensions5.21 × 5.24 × 3.27 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Twinning Wisp, Cloud, Crystal
Top View
5.21 mm5.24 mm0.55 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6551409149
Side View
Table 56.0%Crown 36.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.6%

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 4
Current: $1,294 SGD|Low: $778 SGD|High: $1,866 SGD|Avg: $1,299 SGD|-0.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 7$778 SGD
Retailer 9$959 SGD
Retailer 6$1,141 SGD
Retailer 2$1,192 SGD
Retailer 1$1,294 SGD
Retailer 3$1,296 SGD
Retailer 8$1,514 SGD
Retailer 4$1,553 SGD
Retailer 5$1,840 SGD

44 data points across 9 retailers

26 retailers$778 SGD to $1,840 SGD

A
Cheapest Retailer
-
$778 SGD
Final sale: no returns
A
Retailer 2
-
$837 SGD
View
Retailer 3
-
$896 SGD
View
Price last confirmed 26 days ago
Retailer 4
-
$912 SGD
View
Price last confirmed 67 days ago
Retailer 5
-
$912 SGD
View
Price last confirmed 21 days ago
B+
Retailer 6
-
$924 SGD
View
B+
Retailer 7
-
$938 SGD
View
B+
Retailer 8
-
$947 SGD
View
B+
Retailer 9
-
$959 SGD
View
B+
Retailer 10
-
$1,050 SGD
View
Retailer 11
-
$1,052 SGD
View
Price last confirmed 45 days ago
B+
Retailer 12
-
$1,123 SGD
View
B+
Retailer 13
-
$1,128 SGD
View
B+
Retailer 14
-
$1,128 SGD
View
B+
Retailer 15
-
$1,141 SGD
View
B+
Retailer 16
-
$1,166 SGD
View
B
Retailer 17
-
$1,192 SGD
View
B
Retailer 18
-
$1,232 SGD
View
B+
Retailer 19
-
$1,294 SGD
View
B+
Retailer 20
-
$1,296 SGD
View
B
Retailer 21
-
$1,411 SGD
View
Retailer 22
-
$1,514 SGD
View
Price last confirmed 33 days ago
B
Retailer 23
-
$1,553 SGD
View
B
Retailer 24
-
$1,616 SGD
View
B
Retailer 25
-
$1,840 SGD
View
Most Expensive
NZ Jewellers
9b4a09a1-bca8-48c8-abbe-fa20ccd6310f · Oct 17
$3,157 SGD
$2,463 USD
View
Price under review
25 more retailers have this diamond
Prices start from $778 SGDSave up to $1,062 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
0.55ct Round
$778 SGD