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Round|Natural|GIA

1.53ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 2126181975

Certificate GIA 2126181975

Diamond specifications and retailer prices

From $3,338 SGD
As of November 5, 2026
Save $1,920 SGD (37%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $8,668 SGD at NZ Jewellers · As of October 27, 2026
View at NZ Jewellers

About this 1.53ct natural round diamond

This 1.53ct natural round sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2126181975. Listed at 18 retailers as of November 5, 2026, with a 58% 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

1.53
Carat
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 2126181975
Dimensions7.38 × 7.35 × 4.59 mm
L/W Ratio1.00
Star length45%
Lower girdle75%
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Cloud, Needle, Feather, Indented Natural
Top View
7.38 mm7.35 mm1.53 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2126181975
Side View
Table 57.0%Crown 35°Girdle: Slightly ThickPavilion 41.2°Culet: NoneDepth 62.3%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 5
Current: $4,698 SGD|Low: $3,338 SGD|High: $8,420 SGD|Avg: $5,342 SGD
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 5$3,338 SGD
Retailer 8$3,384 SGD
Retailer 6$4,076 SGD
Retailer 2$4,471 SGD
Retailer 1$4,698 SGD
Retailer 4$4,964 SGD
Retailer 3$5,167 SGD
Retailer 7$5,257 SGD
Retailer 9$5,463 SGD
Retailer 10$6,057 SGD
Retailer 11$8,331 SGD

46 data points across 11 retailers

18 retailers$3,338 SGD to $5,257 SGD

A
Cheapest Retailer
-
$3,338 SGD
A
Retailer 2
-
$3,384 SGD
View
A
Retailer 3
-
$4,076 SGD
View
Retailer 4
-
$4,248 SGD
View
Price last confirmed 11 days ago
Retailer 5
-
$4,377 SGD
View
Price last confirmed 11 days ago
Retailer 6
-
$4,471 SGD
View
Price last confirmed 12 days ago
A
Retailer 7
-
$4,698 SGD
View
Retailer 8
-
$4,752 SGD
View
Price last confirmed 9 days ago
A
Retailer 9
-
$4,964 SGD
View
Retailer 10
-
$4,975 SGD
View
Price last confirmed 12 days ago
Retailer 11
-
$4,975 SGD
View
Price last confirmed 11 days ago
Retailer 12
-
$5,162 SGD
View
Price last confirmed 12 days ago
Retailer 13
-
$5,167 SGD
View
Price last confirmed 12 days ago
B+
Retailer 14
-
$5,257 SGD
View
Retailer 15
-
$5,740 SGD
View
Price last confirmed 10 days ago
Retailer 16
-
$6,057 SGD
View
Price last confirmed 10 days ago
Retailer 17
-
$8,331 SGD
View
Price last confirmed 11 days ago
Most Expensive
NZ Jewellers
92d25131-44ca-4437-a4f5-9e38d931f1c8 · Oct 27
$8,668 SGD
$6,786 USD
View
Price last confirmed 10 days ago
17 more retailers have this diamond
Prices start from $3,338 SGDSave up to $1,920 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
1.53ct Round
$3,338 SGD