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Heart|Natural|GIA

0.90ct K SI1 Heart Natural Diamond

EX • K/SI1 • GIA 1549115288

Certificate GIA 1549115288

Diamond specifications and retailer prices

From $951 SGD
As of November 4, 2026
Save $223 SGD (19%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $1,174 SGD at Blue Nile · As of November 5, 2026
View at Blue Nile

About this 0.9ct natural heart diamond

This 0.9ct natural heart sits in the just-under-one-carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1549115288. Listed at 6 retailers as of November 4, 2026, with prices from $951 to $1,174, a $223 spread on the same certified stone. Blue Nile lists it at $1,174. 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 (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1549115288
Dimensions5.55 × 6.71 × 4.10 mm
L/W Ratio1.21
Culet sizeNone
Key to symbols
Cloud, Crystal, Feather
Top View
5.55 mm6.71 mm0.90 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1549115288
Side View
Table 57.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 61.1%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 4
Current: $1,174 SGD|Low: $834 SGD|High: $1,319 SGD|Avg: $1,066 SGD|-11.0%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 4$951 SGD
Retailer 6$952 SGD
Retailer 3$1,037 SGD
Retailer 5$1,061 SGD
Retailer 2$1,103 SGD
Blue Nile$1,174 SGD

41 data points across 6 retailers

6 retailers$951 SGD to $1,174 SGD

A
Cheapest Retailer
-
$951 SGD
Final sale: no returns
A
Retailer 2
-
$952 SGD
View
A
Retailer 3
-
$1,037 SGD
View
A
Retailer 4
-
$1,061 SGD
View
A
Retailer 5
-
$1,103 SGD
View
Most Expensive
A
Blue Nile
27439294 · Nov 5
$1,174 SGD
$916 USD
View
5 more retailers have this diamond
Prices start from $951 SGDSave up to $223 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 Heart
$951 SGD