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Round|Natural|GIA

0.90ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 5566560520

Certificate GIA 5566560520

Diamond specifications and retailer prices

From $1,487 SGD
As of November 6, 2026
Save $3,267 SGD (69%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $4,855 SGD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 0.9ct natural round diamond

This 0.9ct natural round sits in the just-under-one-carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5566560520. Listed at 18 retailers as of November 2, 2026, with a 220% 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

0.90
Carat
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle35.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 5566560520
Dimensions6.18 × 6.20 × 3.84 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather
Top View
6.18 mm6.20 mm0.90 ctK / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 5566560520
Side View
Table 58.0%Crown 35.5°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 62.0%

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: $4,855 SGD|Low: $1,471 SGD|High: $4,855 SGD|Avg: $2,471 SGD
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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 2, 2026
Retailer 15$1,487 SGD
Retailer 13$1,553 SGD
Retailer 7$1,807 SGD
Retailer 8$1,827 SGD
Retailer 17$1,916 SGD
Retailer 10$1,973 SGD
Retailer 4$1,990 SGD
Retailer 18$1,990 SGD
Retailer 9$2,074 SGD
Retailer 3$2,082 SGD
Retailer 6$2,164 SGD
Retailer 11$2,198 SGD
Retailer 5$2,297 SGD
Retailer 12$2,705 SGD
Retailer 16$2,935 SGD
Retailer 14$3,487 SGD
Retailer 2$4,754 SGD
NZ Jewellers$4,855 SGD

18 data points across 18 retailers

18 retailers$1,487 SGD to $4,754 SGD

A
Cheapest Retailer
-
$1,487 SGD
A
Retailer 2
-
$1,553 SGD
View
B+
Retailer 3
-
$1,807 SGD
View
B+
Retailer 4
-
$1,827 SGD
View
B+
Retailer 5
-
$1,916 SGD
View
B
Retailer 6
-
$1,973 SGD
View
Retailer 7
-
$1,990 SGD
View
Price last confirmed 8 days ago
B
Retailer 8
-
$1,990 SGD
View
Retailer 9
-
$2,074 SGD
View
Price last confirmed 10 days ago
B
Retailer 10
-
$2,082 SGD
View
B
Retailer 11
-
$2,164 SGD
View
B
Retailer 12
-
$2,198 SGD
View
B
Retailer 13
-
$2,297 SGD
View
B
Retailer 14
-
$2,705 SGD
View
B
Retailer 15
-
$2,935 SGD
View
B
Retailer 16
-
$3,487 SGD
View
B
Retailer 17
-
$4,754 SGD
View
Most Expensive
NZ Jewellers
963deaa8-a60e-43fa-abc0-9752fca7d4ab · Oct 30
$4,855 SGD
$3,801 USD
View
Price last confirmed 7 days ago
17 more retailers have this diamond
Prices start from $1,487 SGDSave up to $3,267 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
0.90ct Round
$1,487 SGD