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Heart|Natural|GIA

1.31ct D SI1 Heart Natural Diamond

GD • D/SI1 • GIA 6535430494

Certificate GIA 6535430494

Diamond specifications and retailer prices

From $5,285 SGD
As of November 5, 2026
Save $4,489 SGD (46%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $11,160 SGD at NZ Jewellers · As of September 21, 2026
View at NZ Jewellers

About this 1.31ct natural heart diamond

This 1.31ct natural heart sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6535430494. Listed at 5 retailers as of November 4, 2026, with a 85% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.31
Carat
D
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6535430494
Dimensions7.42 × 6.15 × 3.91 mm
L/W Ratio1.21
Top View
7.42 mm6.15 mm1.31 ctD / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6535430494
Side View
Table 60.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 63.5%

Caratlytics Score

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

Price History

Last verified: Nov 5
Current: $5,285 SGD|Low: $4,866 SGD|High: $10,255 SGD|Avg: $6,360 SGD|-5.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 5, 2026
Retailer 7$5,258 SGD
Retailer 1$5,285 SGD
Retailer 2$5,407 SGD
Retailer 3$5,607 SGD
Retailer 5$5,967 SGD
Retailer 10$6,067 SGD
Retailer 9$6,427 SGD
Retailer 8$6,430 SGD
Retailer 6$6,434 SGD
Retailer 11$6,678 SGD
Retailer 4$9,775 SGD

15 data points across 11 retailers

5 retailers$5,285 SGD to $9,775 SGD

B+
Cheapest Retailer
-
$5,285 SGD
Retailer 2
-
$5,803 SGD
View
Price last confirmed 45 days ago
Retailer 3
-
$5,967 SGD
View
Price last confirmed 9 days ago
B
Retailer 4
-
$9,775 SGD
View
Most Expensive
NZ Jewellers
bf7311fe-6661-4c0b-acfa-094dc50d6ea3 · Sep 21
$11,160 SGD
$8,708 USD
View
Price last confirmed 46 days ago
4 more retailers have this diamond
Prices start from $5,285 SGDSave up to $4,489 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+
1.31ct Heart
$5,285 SGD