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Heart|Natural|GIA

1.26ct I SI1 Heart Natural Diamond

GD • I/SI1 • GIA 5453335159

Certificate GIA 5453335159

Diamond specifications and retailer prices

From $4,047 SGD
As of November 5, 2026
Save $1,598 SGD (28%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $5,645 SGD at 77 Diamonds · As of November 7, 2026
View at 77 Diamonds

About this 1.26ct natural heart diamond

This 1.26ct natural heart sits in the one-and-a-quarter to one-and-a-half carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 5453335159. Listed at 3 retailers as of November 5, 2026, with prices from $4,047 to $5,645, a $1,598 spread on the same certified stone. 77 Diamonds lists it at $5,645. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.26
Carat
I
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5453335159
Dimensions6.23 × 6.03 × 4.09 mm
L/W Ratio1.03
Top View
6.23 mm6.03 mm1.26 ctI / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5453335159
Side View
Table 61.0%CrownGirdle: ThinPavilionCulet: NoneDepth 67.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $5,645 SGD|Low: $3,600 SGD|High: $5,708 SGD|Avg: $4,364 SGD|+0.1%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 7, 2026
Retailer 6$3,600 SGD
Retailer 5$3,824 SGD
Retailer 4$3,902 SGD
Retailer 7$4,034 SGD
Retailer 3$4,325 SGD
Retailer 8$4,688 SGD
Retailer 2$4,871 SGD
77 Diamonds$5,645 SGD

36 data points across 8 retailers

3 retailers$4,047 SGD to $5,645 SGD

B+
Cheapest Retailer
-
$4,047 SGD
B
Retailer 2
-
$4,241 SGD
View
Most Expensive
B
77 Diamonds
CUSZ4FSBHBXA · Nov 7
$5,645 SGD
£3,468 GBP
View
2 more retailers have this diamond
Prices start from $4,047 SGDSave up to $1,598 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.

B+
1.26ct Heart
$4,047 SGD