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Heart|Natural|GIA

0.51ct F SI1 Heart Natural Diamond

GD • F/SI1 • GIA 6561678771

Certificate GIA 6561678771

Diamond specifications and retailer prices

From $641 SGD
As of November 6, 2026
Save $308 SGD (32%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $948 SGD at RockHer · As of November 6, 2026
View at RockHer

About this 0.51ct natural heart diamond

This 0.51ct natural heart sits in the half to three-quarter carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6561678771. Listed at 8 retailers as of November 6, 2026, with prices from $641 to $948, a $308 spread on the same certified stone. RockHer lists it at $948. 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

0.51
Carat
F
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6561678771
Dimensions5.37 × 6.36 × 1.71 mm
L/W Ratio1.18
Culet sizeNone
Key to symbols
Cloud, Crystal
Top View
5.37 mm6.36 mm0.51 ctF / SI1
OriginNatural
CutGood
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 6561678771
Side View
Table 75.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 26.9%

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 6
Current: $848 SGD|Low: $641 SGD|High: $984 SGD|Avg: $780 SGD|+0.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
RockHer
November 6, 2026
Retailer 4$641 SGD
Retailer 6$701 SGD
Retailer 3$725 SGD
Retailer 1$848 SGD
Retailer 2$864 SGD
Retailer 5$870 SGD
RockHer$948 SGD

6 data points across 7 retailers

8 retailers$641 SGD to $948 SGD

B+
Cheapest Retailer
-
$641 SGD
Final sale: no returns
B+
Retailer 2
-
$701 SGD
View
B
Retailer 3
-
$725 SGD
View
B
Retailer 4
-
$748 SGD
View
B
Retailer 5
-
$848 SGD
View
B
Retailer 6
-
$864 SGD
View
B
Retailer 7
-
$870 SGD
View
Most Expensive
B
RockHer
1871b45b3 · Nov 6
$948 SGD
$740 USD
View
7 more retailers have this diamond
Prices start from $641 SGDSave up to $308 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+
0.51ct Heart
$641 SGD